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2-Mercaptobenzothiazole is an organosulfur compound with the formula C6H4(NH)SC=S.
2-Mercaptobenzothiazole is a beige or light yellow powder with a faint odor.
2-Mercaptobenzothiazole is substituted at the 2-position with a sulfanyl group.
CAS Number: 149-30-4
EC Number: 205-736-8
Chemical formula: C7H5NS2
Molecular Formula: C7H5NS2 / C6H4SNCSH
Synonyms: 2-Mercaptobenzothiazole, 149-30-4, 2-Benzothiazolethiol, Benzo[d]thiazole-2(3H)-thione, Captax, Benzothiazolethiol, Benzo[d]thiazole-2-thiol, MERCAPTOBENZOTHIAZOLE, 1,3-Benzothiazole-2-thiol, 2(3H)-Benzothiazolethione, Dermacid, Benzothiazole-2-thiol, Sulfadene, 118090-09-8, 2-MBT, Thiotax, Kaptax, Mertax, Rokon, Rotax, Accelerator M, Vulkacit M, Ekagom G, Accel M, Mebetizole, Mebithizol, Kaptaks, Nuodeb 84, Soxinol M, Vulkacit Mercapto, Pneumax MBT, 2-Mercaptobenzthiazole, Royal MBT, Mercaptobenzothiazol, Mercaptobenzthiazole, Vulkacit Mercapto/C, 2-Mercptobenzothiazole, Pennac mbt powder, mebetizol, Benzothiazole-2-thione, 2-Benzothiazolinethione, Nuodex 84, Usaf gy-3, Nocceler M, Usaf xr-29, MBT, Benzothiazole, mercapto-, 2-Benzothiazolyl mercaptan, 2-Merkaptobenzotiyazol, 2-Merkaptobenzthiazol, 1,3-Benzothiazol-2-yl hydrosulfide, benzothiazolyl mercaptan, AG 63, Caswell No. 541, 2-sulfanyl-1,3-benzothiazole, Perkacit MBT, CHEBI:34292, 3H-1,3-benzothiazole-2-thione, 2-Benzothiazolethiol(9CI), NCI-C56519, Mercaptobenzothiazole (VAN), CCRIS 891, DTXSID1020807, HSDB 4025, NSC 2041, EINECS 205-736-8, UNII-5RLR54Z22K, Accelerator mercapto, EPA Pesticide Chemical Code 051701, 5RLR54Z22K, AI3-00985, 2-Mercaptobenzothioazole, 2-mercapto-benzothiazole, NSC-2041, MFCD00005781, 1,3-Benzothiazole-2-thione, DTXCID90807, 2-Sulphanyl-1,3-benzothiazole, NSC2041, EC 205-736-8, 1,3-benzothiazole-2(3H)-thione, 1,3-Benzothiazol-2-yl hydrosulphide, NCGC00091643-07, NCGC00091643-08, Kaptax [Czech], 2-thiobenzothiazole, 2(3H)-Benzothiazolethione, potassium salt, C7H5NS2, pennac mbt, Thiot ax, Sanceler M, Wobezit M, 2-MERCAPTOBENZOTHIAZOLE (IARC), 2-MERCAPTOBENZOTHIAZOLE [IARC], Nonflex NB, captax, zinc salt, CAS-149-30-4, captax, sodium salt, 2-Merkaptobenzthiazol [Czech], 2-Merkaptobenzotiyazol [Polish], Vulkacit Mercapto/MG, Aero Promoter 412, captax, potassium salt, 2-Sulfanylbenzothiazole, 2-Mercapto benzothiazole, Vulkafil ZN 94TT01, captax, lead(+2) salt, captax, cobalt(+2) salt, captax, copper(+2) salt, captax, silver(+1) salt, captax, bismuth(+3) salt, captax, mercury (+2) salt, Drmacid, MBT (vulcanization accelerator), Skin Balm, MBT, captax, 2-benzothiazolthiol, mercapto-benzothiazole, 2-Benzothiazolethione, 2-mercaptobenzothiazol, 2-mercapto-benzthiazole, Spectrum_001669, SpecPlus_000728, 155-04-4, Spectrum2_001666, Spectrum3_001665, Spectrum4_000628, Spectrum5_001400, 2(3H)-Benzothiazoletione, Epitope ID:116044, Benzothiazole, 2-mercapto-, SCHEMBL23237, BSPBio_003449, KBioGR_001216, KBioSS_002149, Sulfodene Medication for Dogs, BIDD:ER0373, DivK1c_006824, SPECTRUM1504225, 2-MercaptobenzothiazoleDermacid, SPBio_001851, 2-Mercaptobenzothiazole, 97%, CHEMBL111654, 155-04-4 (zinc salt), WLN: T56 BN DSJ CSH, Vulkacit M, vulkacit merkapto/c, KBio1_001768, KBio2_002149, KBio2_004717, KBio2_007285, KBio3_002669, 2-Mercaptobenzothiazole (2-MBT), 7778-70-3 (potassium salt), AMY23224, MERCAPTOBENZOTHIAZOLE [HSDB], Tox21_113450, Tox21_400016, 2-MERCAPTOBENZOTHIAZOLE [MI], BDBM50444459, c1019, CCG-39092, MERCAPTOBENZOTHIAZOLE [WHO-DD], AKOS000119128, AKOS002337495, 1,3-Benzothiazol-2-yl hydrosulfide #, CS-W017829, DB11496, FS-1801, HY-W017113, 4162-43-0 (copper(+2) salt), BENZ-1,3-THIAZOLIDINE-2-THIONE, NCGC00091643-01, NCGC00091643-02, NCGC00091643-04, NCGC00091643-05, NCGC00091643-06, NCGC00091643-09, NCGC00091643-10, NCGC00091643-12, AC-11606, 2,3-DIHYDROBENZOTHIAZOLE-2-THIONE, 2-MERCAPTOBENZOTHIAZOLE [GREEN BOOK], FT-0612758, FT-0699702, M0055, M0247, EN300-21479, D70518, F71266, 2-Mercaptobenzothiazole, technical, >=90% (T), AB00053232-04, A808877, A927195, AE-641/31369054, Q904160, Q-200294, BRD-K55160477-001-02-1, BRD-K55160477-001-03-9, F3066-0005, Z104499140
2-Mercaptobenzothiazole is a rubber chemical, an accelerant of vulcanization.
2-Mercaptobenzothiazole is contained in the "mercapto mix".
The most frequent occupational categories are metal industry, homemakers, health services and laboratories, building industries, and shoemakers.
2-Mercaptobenzothiazole is also used as a corrosion inhibitor in cutting fluids or in releasing fluids used in the pottery industry.
2-Mercaptobenzothiazole is a 1,3-Benzothiazole substituted at the 2-position with a sulfanyl group.
2-Mercaptobenzothiazole is used as a vulcanisation accelerator in the crosslinking of rubber.
2-Mercaptobenzothiazole pale yellow monoclinic needle-like or flaky crystals with a disagreeable odor.
Insoluble in water and gasoline, soluble in ethanol, ethyl ether, acetone, ethyl acetate, benzene, chloroform and dilute alkali solution.
2-Mercaptobenzothiazole is a chemical compound with the molecular formula C7H5NS2.
2-Mercaptobenzothiazole is a member of the benzothiazole class of organic compounds and is known for its applications in various industries.
2-Mercaptobenzothiazole is an organosulfur compound with the formula C6H4(NH)SC=S. A white solid, it is used in the sulfur vulcanization of rubber.
2-Mercaptobenzothiazoles are an important class of bioactive and industrially important organic compounds.
2-Mercaptobenzothiazole has been used in the synthesis of MBT functionalized mesoporous silica which can be used as an adsorbent for the removal of Hg(II) from aqueous solution.
2-Mercaptobenzothiazole is found widely in a variety of rubber articles in the modern environment both at home and at work.
Examples of such articles are rubber tires and tubes for car, rubber boots and shoes, rubber soles, gloves, garden hoses, elastic and rubberized clothing such as brassieres, girdles, support stockings, swimwear, swim caps and elastic bands as well as in rubber pillows, sponge makeup applicators, toys, balloons, baby bottle nippers, latex condoms, examination and surgical gloves, dental dams and rubber handles on tools such as tennis racquets and golf club handles.
Industrially 2-Mercaptobenzothiazole is found in rubber products such as the lining for fuel tanks, caulking, electrical cords, plugs, gas masks, safety goggles, conveyor belts, shock absorbers, springs, mats, aprons, earphones, stethoscopes, rubber bands, erasers, rubber sheeting, non-slip waistbands, mattresses and anti-slip carpet backing.
2-Mercaptobenzothiazole is also found in glue for leather and plastic, cutting oils, antifreeze, greases, anticorrosive agents, detergents, cements and adhesives, fungicides, veterinary tick and flea sprays and powders and film emulsions.
2-Mercaptobenzothiazole is an organosulfur compound with the formula C6H4NSCSH.
The molecule consists of a benzene ring fused to a 2-Mercaptothiazole ring.
2-Mercaptobenzothiazole chemical has a slightly foul odor and bitter taste, non-poisonous.
Easily soluble in ethyl acetone, acetone, a dilute solution of sodium hydroxide and sodium carbonate, soluble in ethyl alcohol, not easily soluble in benzene, and insoluble in water and gasoline.
2-Mercaptobenzothiazole is light yellow monoclinic needle or leaf crystal or powder.
2-Mercaptobenzothiazole is still soluble in glacial acetic acid, alkali and carbonate solution, but insoluble in water.
2-Mercaptobenzothiazole has a bitter, unpleasant odor.
As a general vulcanization accelerator, 2-Mercaptobenzothiazole is widely used in various rubber.
2-Mercaptobenzothiazole can promote the vulcanization of natural rubber and synthetic rubber vulcanized with sulfur.
However, zinc oxide and fatty acid are needed to be activated before use.
2-Mercaptobenzothiazole is often used in combination with other accelerator systems, such as thiourea thiuram and tellurium dithiocarbamate, as vulcanization accelerators for butyl rubber, and with lead trisalt maleate, 2-Mercaptobenzothiazole can be used in light water-resistant chlorosulfonated polyethylene compound.
In the latex, it is often used with dithiocarbamate, but 2-Mercaptobenzothiazole can be vulcanized at room temperature when it is used with diethyldithiocarbamate diethylamine.
2-Mercaptobenzothiazole is easy to disperse in rubber and does not pollute.
But because of its bitter taste, it is not suitable for rubber products in food contact.
Promoter M is the intermediate of promoter MZ, DM, NS, DIBS, CA, DZ, NOBS, MDB, etc. 2-Mercaptobenzothiazole and 1-amino-4-nitroanthraquinone and potassium carbonate can be refluxed in dimethylformamide for 3 hours to produce dye Disperse brilliant red S-GL.
This dye is used for dyeing polyester and its blended fabrics.
2-Mercaptobenzothiazole is also called acid copper plating brightener M when it is used as electroplating additive.
2-Mercaptobenzothiazole is used as paving brightener when copper sulfate is used as main salt for copper plating.
2-Mercaptobenzothiazole is also used to produce pesticide fungicides, nitrogen fertilizer synergists, cutting oil and lubricating additives, organic ashing inhibitors in photographic chemistry, metal corrosion inhibitors, etc.
Moreover, it 2-Mercaptobenzothiazole also a reagent for chemical analysis.
2-Mercaptobenzothiazole is low toxic and has irritating effect on skin and mucosa.
2-Mercaptobenzothiazole is used as a sensitive reagent and rubber accelerator for the determination of gold, bismuth, cadmium, cobalt, mercury, nickel, lead, thallium and zinc.
As the most famous China 2-Mercaptobenzothiazole supplier in China, Fengchen Group’s Product is well packed with the newest and the safest package.
2-Mercaptobenzothiazole is mainly used in manufacturing tyres, inner tubes, belts, rubber shoes and other industrial rubber products.
2-Mercaptobenzothiazole is one of the effective corrosion inhibitors for copper or copper alloy.
When the cooling system contains copper equipment and a certain amount of copper ions in raw water, this product can be added to prevent copper corrosion.
2-Mercaptobenzothiazole is an intermediate of herbicide benzothiazole, and also a rubber accelerator and its intermediate.
2-Mercaptobenzothiazole is an organic compound that belongs to the family of benzothiazoles.
2-Mercaptobenzothiazole has the molecular formula C7H5NS2 and a molecular weight of 167.25 g/mol.MBT is used in the production of rubber and latex as a vulcanization accelerator, which means it helps to speed up the process of crosslinking the polymer chains in rubber and latex to make them more durable and resistant to heat, chemicals, and other environmental factors.
2-Mercaptobenzothiazole is also used in the manufacture of various other products, such as pesticides, water treatment chemicals, and corrosion inhibitors.
2-Mercaptobenzothiazole is also employed as an accelerator in the synthesis of various chemicals, including dyes, pharmaceuticals, and pesticides.
2-Mercaptobenzothiazole facilitates certain chemical reactions by increasing the rate at which they occur.
2-Mercaptobenzothiazole has been investigated for its biocidal properties.
2-Mercaptobenzothiazole may exhibit fungicidal and bactericidal activities, and as a result, it has found applications in some biocidal formulations.
2-Mercaptobenzothiazole has been used as a copper corrosion inhibitor.
2-Mercaptobenzothiazole can form complexes with copper ions, helping to prevent corrosion in systems where copper is present.
2-Mercaptobenzothiazole serves as a building block or intermediate in the synthesis of other organic compounds.
2-Mercaptobenzothiazole is thiol group makes it reactive and useful in various chemical transformations.
Like many chemical compounds, 2-Mercaptobenzothiazole should be handled with care. It can cause skin and eye irritation, and prolonged or repeated exposure may lead to sensitization.
Safety precautions, including the use of personal protective equipment, are recommended when working with MBT.
2-Mercaptobenzothiazoles are subject to regulations and guidelines regarding its production, handling, and disposal.
2-Mercaptobenzothiazole is one of the earliest and most widely used vulcanization accelerators in the rubber industry.
2-Mercaptobenzothiazole promotes the cross-linking of polymer chains during vulcanization, leading to the formation of a network structure in rubber, which imparts improved mechanical properties.
In the vulcanization process, 2-Mercaptobenzothiazole participates in the formation of sulfur cross-links between polymer chains.
The thiol (mercapto) group in MBT reacts with sulfur, contributing to the creation of a stronger and more durable rubber matrix.
2-Mercaptobenzothiazole is synthesized industrially, and its production involves reactions between aniline, carbon disulfide, and sulfur.
The resulting compound is then used as an accelerator in various industrial processes.
2-Mercaptobenzothiazole tends to have a moderate rate, providing a good balance between processing time and the development of desirable rubber properties.
This characteristic makes it suitable for a range of rubber applications.
The use of 2-Mercaptobenzothiazole in rubber formulations can influence the aging properties of the final product.
2-Mercaptobenzothiazole is known for its resistance to heat and aging, contributing to the longevity of rubber goods.
2-Mercaptobenzothiazole is employed in the manufacturing of various rubber products, including tires, belts, hoses, shoe soles, and other molded rubber items.
2-Mercaptobenzothiazole is role in vulcanization enhances the performance and durability of these products.
In certain applications, there may be concerns about the migration of MBT from rubber products.
Migration of chemicals from rubber articles to external surfaces or to other materials in contact with rubber can be a consideration in specific applications, such as in food packaging.
Ongoing research in the rubber industry explores alternative accelerators with improved safety profiles and reduced environmental impact.
This is part of a broader effort to develop sustainable and eco-friendly rubber processing techniques.
2-Mercaptobenzothiazole is insoluble in water but dissolves upon the addition of base, reflecting deprotonation.
Treatment with Raney nickel results in monodesulfurization, giving benzothiazole:
C6H4(NH)SC=S + Ni → C6H4(N)SCH + NiS
The benzo ring undergoes electrophilic aromatic substitution at the position para to nitrogen.
Oxidation gives mercaptobenzothiazole disulfide.
This disulfide reacts with amines to give sulfenamide derivatives such 2-Mercaptobenzothiazole.
These compounds are used in sulphur vulcanization, where they act as accelerators.
2-Mercaptobenzothiazole in contact with your skin may result in dermatitis.
Brief or occasional contact may not pose a problem.
2-Mercaptobenzothiazole is an additive used as an accelerator in the manufacture of both natural and synthetic rubber.
2-Mercaptobenzothiazole is an effective copper or copper alloy corrosion inhibitor.
When the cooling system contains copper equipment and raw water contains a certain amount of copper ions, it can be added to prevent copper corrosion.
2-Mercaptobenzothiazole is also an intermediate of the herbicide benzothiachlor.
2-Mercaptobenzothiazole is often used in combination with other accelerators in rubber formulations to achieve specific curing characteristics and optimize the properties of the final product.
Combinations with accelerators like sulfenamides or thiurams are common.
2-Mercaptobenzothiazole is employed in latex compounding, contributing to the vulcanization of latex-based products.
Latex formulations, which include liquid rubber, are used in the production of items such as gloves, foams, and adhesives.
The effectiveness of 2-Mercaptobenzothiazole as an accelerator can be influenced by the pH of the rubber compound.
In some cases, pH adjustments may be necessary to optimize the vulcanization process.
2-Mercaptobenzothiazole is compatible with many rubber polymers, it may not be suitable for all types.
In some instances, alternative accelerators are chosen based on the specific requirements of the polymer and the intended application.
2-Mercaptobenzothiazole, particularly in combination with secondary amines, has been associated with the potential formation of nitrosamines.
Nitrosamines are compounds that can be carcinogenic, and efforts are made to minimize their formation in rubber products.
The production and use of MBT have raised environmental concerns due to its persistence and potential impact on ecosystems.
Efforts are ongoing to develop alternative accelerators that are more environmentally friendly.
2-Mercaptobenzothiazole involves the reaction of aniline with carbon disulfide and sulfur.
The resulting compound is then used as an accelerator in various applications, as mentioned earlier.
Industries using 2-Mercaptobenzothiazole need to be aware of and comply with regulations regarding its production, handling, and disposal.
Regulatory standards may vary by country, and adherence to these standards is critical for workplace safety and environmental protection.
2-Mercaptobenzothiazole is predominantly known for its role in the rubber industry, it may find applications in other industries, such as in certain chemical processes and as a chemical intermediate.
2-Mercaptobenzothiazole is known for its effectiveness at relatively low vulcanization temperatures.
This characteristic can be advantageous in certain applications where high temperatures during processing are a concern.
2-Mercaptobenzothiazole can be influenced by factors such as temperature and exposure to air.
Proper storage conditions, including avoiding prolonged exposure to air and maintaining a cool, dry environment, contribute to preserving its shelf life.
2-Mercaptobenzothiazole is used as an accelerator in the vulcanization of specialty rubbers, including butyl rubber and neoprene.
The choice of accelerator depends on the specific properties required for the end-use application.
2-Mercaptobenzothiazole contributes to the curing characteristics of rubber compounds, influencing parameters such as scorch time, cure time, and the rate of vulcanization.
These factors are crucial for controlling the processing of rubber products.
Analytical techniques, such as gas chromatography, are employed to determine residual accelerators, including 2-Mercaptobenzothiazole, in rubber products.
This is important for quality control and ensuring compliance with safety standards.
In certain dynamic applications, such as high-speed tire applications, the use of 2-Mercaptobenzothiazole may face challenges due to its potential to generate heat during vulcanization.
Tire manufacturers may explore alternative accelerators for such applications.
Industries may explore alternative accelerators or make adjustments to formulations to address specific challenges associated with 2-Mercaptobenzothiazole, such as concerns about nitrosamine formation or environmental impact.
Regulatory trends in the chemical and rubber industries may influence the use of certain compounds.
For instance, regulatory restrictions on certain substances may drive the exploration of alternative accelerators or modification of formulations.
Ongoing research focuses on developing safer and more sustainable vulcanization systems.
This includes the exploration of alternative accelerators and the development of processes with reduced environmental impact.
Uses of 2-Mercaptobenzothiazole:
2-Mercaptobenzothiazole is an industrial chemical that is used principally in the manufacture of rubber.Vulcanization accelerator for type of rubber usually used in the production of household rubber gloves rather than medical rubber gloves; corrosion inhibitor in metal-working fluids, detergents, antifreeze, and photographic emulsions.
In addition, 2-Mercaptobenzothiazole is formed as a reaction product from some vulcanisation accelerators in elastomer production.
2-Mercaptobenzothiazole is an accelerator, retarder, and peptizer for natural and other rubber products, but is also used as a corrosion inhibitor in soluble cutting oils and antifreeze mixtures; in greases, adhesives, photographic-film emulsions; detergents; veterinary products, such as tick and flea powders and sprays.
2-Mercaptobenzothiazole is added to polyether polymers as a stabilizer to resist damage by air and ozone, and is a component approved in the USA in some skin medications for dogs (HSDB, 2015).
2-Mercaptobenzothiazole is also used as an intermediate in the production of pesticides such as 2-(thiocyanomethylthio)benzothiazole (Azam & Suresh, 2012), and sodium and zinc salts of 2-Mercaptobenzothiazole are approved for use as pesticides by the EPA (1994).
2-Mercaptobenzothiazole is extensively used in the vulcanization of natural and synthetic rubbers.
2-Mercaptobenzothiazole is mainly used to manufacture rubber tires, rubber belts, rubber shoes, and other technical rubber goods.
2-Mercaptobenzothiazole is primarily used as a rubber vulcanization accelerator.
In the vulcanization process, sulfur compounds are added to rubber to cross-link the polymer chains, leading to improved strength, elasticity, and other desirable properties.
2-Mercaptobenzothiazole promotes the vulcanization reaction, enhancing the efficiency of the process.
2-Mercaptobenzothiazole, rubber vulcanizes with less sulfur and at milder temperatures, both factors give a stronger product.
In polymerization, 2-Mercaptobenzothiazole finds use as a radical polymerization inhibitor, chain transfer agent, reforming agent, and additive for photoinitiators.
2-Mercaptobenzothiazole has also been used in the past in the gold-mining industry for the froth flotation of gold from ore residue as part of the extraction process.
Other release to the environment of 2-Mercaptobenzothiazole is likely to occur from: indoor use in long-life materials with low release rate (e.g. flooring, furniture, toys, construction materials, curtains, foot-wear, leather products, paper and cardboard products, electronic equipment), outdoor use in long-life materials with low release rate (e.g. metal, wooden and plastic construction and building materials) and outdoor use in long-life materials with high release rate (e.g. tyres, treated wooden products, treated textile and fabric, brake pads in trucks or cars, sanding of buildings (bridges, facades) or vehicles (ships)).
2-Mercaptobenzothiazole can be found in complex articles, with no release intended: vehicles, machinery, mechanical appliances and electrical/electronic products (e.g. computers, cameras, lamps, refrigerators, washing machines) and electrical batteries and accumulators.
2-Mercaptobenzothiazole can be found in products with material based on: rubber (e.g. tyres, shoes, toys).
2-Mercaptobenzothiazole is used in the following products: polymers.
2-Mercaptobenzothiazole is used for the manufacture of: rubber products.
Other release to the environment of 2-Mercaptobenzothiazole is likely to occur from: indoor use in long-life materials with low release rate (e.g. flooring, furniture, toys, construction materials, curtains, foot-wear, leather products, paper and cardboard products, electronic equipment) and indoor use in long-life materials with high release rate (e.g. release from fabrics, textiles during washing, removal of indoor paints).
Release to the environment of 2-Mercaptobenzothiazole can occur from industrial use: formulation of mixtures, formulation in materials, in the production of articles, as processing aid and as processing aid.
2-Mercaptobenzothiazole has been used in the synthesis of MBT functionalized mesoporous silica which can be used as an adsorbent for the removal of Hg(II) from aqueous solution.
2-Mercaptobenzothiazole can also be used as a:Reference compound in photocatalytic activity tests under UV or visible light irradiation.Starting material for the synthesis of conjugates of 2-Mercaptobenzothiazole for antitubercular activity studies.
2-Mercaptobenzothiazole is used as an additive to rubber products such as shoes, gloves, undergarments, swimwear, clothing, condoms, diaphragms, medical devices, toys, tires and tubes.
2-Mercaptobenzothiazole is also used in cutting oils, antifreeze mixtures, greases, adhesives, photographic film emulsions, detergents, and in veterinary products such as tick and flea powders and sprays.
Further research may identify additional product or industrial usages of this chemical.
2-Mercaptobenzothiazole is used in the following products: polymers and biocides (e.g. disinfectants, pest control products).
2-Mercaptobenzothiazole has an industrial use resulting in manufacture of another substance (use of intermediates).
2-Mercaptobenzothiazole is used in the following areas: formulation of mixtures and/or re-packaging.
2-Mercaptobenzothiazole is used for the manufacture of: rubber products, plastic products, fabricated metal products and.
Release to the environment of 2-Mercaptobenzothiazole can occur from industrial use: as an intermediate step in further manufacturing of another substance (use of intermediates), in the production of articles, as processing aid, as processing aid and formulation in materials.
2-Mercaptobenzothiazole using mercaptobenzothiazole, rubber vulcanizes with less sulfur and at milder temperatures.
2-Mercaptobenzothiazole is used as a cooling tower biocide.
2-Mercaptobenzothiazole chemical has also been used in the gold-mining industry to “float” the gold from ore residue as part of the extraction process.
2-Mercaptobenzothiazole is a Hemi-ultra accelerator extensively used in the vulcanization of natural and synthetic rubbers.
2-Mercaptobenzothiazole is mainly used to manufacture rubber tires, rubber belts, rubber shoes, and other technical rubber goods.
2-Mercaptobenzothiazole is also used to prepare pesticide fungicides, nitrogenous fertilizer synergists, cutting oil and lubricating additives, photographic chemistry in the machine anti ash agent, metal corrosion inhibitors, etc.
2-Mercaptobenzothiazole is also a reagent used in chemical analysis.
The primary and most significant use of 2-Mercaptobenzothiazole is as a vulcanization accelerator in the rubber industry.
2-Mercaptobenzothiazole promotes the cross-linking of polymer chains during the vulcanization process, resulting in improved mechanical properties of rubber, such as strength, elasticity, and heat resistance.
2-Mercaptobenzothiazole is commonly used in the production of tires, belts, hoses, shoe soles, and various other rubber products.
2-Mercaptobenzothiazole is employed as an accelerator in the synthesis of various chemicals, including dyes, pharmaceuticals, and pesticides.
2-Mercaptobenzothiazole facilitates specific chemical reactions by increasing reaction rates.
2-Mercaptobenzothiazole has been used as a copper corrosion inhibitor.
2-Mercaptobenzothiazole can form complexes with copper ions, helping to prevent corrosion in systems where copper is present.
2-Mercaptobenzothiazole has been investigated for its biocidal properties.
2-Mercaptobenzothiazole may exhibit fungicidal and bactericidal activities, leading to its use in some biocidal formulations.
2-Mercaptobenzothiazole is used in latex compounding, contributing to the vulcanization of latex-based products.
Latex formulations, which include liquid rubber, are used in the production of items such as gloves, foams, and adhesives.
2-Mercaptobenzothiazole serves as a chemical intermediate in the synthesis of other organic compounds.
2-Mercaptobenzothiazole is thiol (mercapto) group makes it reactive and useful in various chemical transformations.
2-Mercaptobenzothiazole is used as a biocide and preservative in adhesives (especially based on latex, starch, casein, and animal glues), paper, textiles.
Often found together with 2-Mercaptobenzothiazole as e.g. Vancide 51. Zinc salt is used as a secondary accelerator in latex foam vulcanization.
2-Mercaptobenzothiazole can be added to oil-based hydraulic fluids, heat-transfer fluids (oils, antifreezes), cutting fluids and other mixtures as a corrosion inhibitor, effective for copper and copper alloys.
2-Mercaptobenzothiazole is also used in veterinary dermatology.
2-Mercaptobenzothiazole is used as a brightener for copper sulfate baths, at about 50-100 milligrams/liter. Also can be added to silver cyanide baths.
2-Mercaptobenzothiazole may find applications in the adhesive industry, where it can be used to accelerate the curing or cross-linking of rubber-based adhesives.
This property is beneficial in the production of durable and high-performance adhesives.
2-Mercaptobenzothiazole might be incorporated into polymer blends and composites to modify the curing characteristics and improve the overall performance of the resulting materials.
2-Mercaptobenzothiazole is reactivity makes it a valuable component in certain polymer formulations.
2-Mercaptobenzothiazole can act as a catalyst or accelerator to facilitate reactions that lead to the production of specific organic compounds.
2-Mercaptobenzothiazole is role in chemical synthesis extends beyond rubber-related applications.
In the manufacturing of vibration control products, such as mounts and isolators, 2-Mercaptobenzothiazole may be used to enhance the properties of rubber components.
The vulcanization process improves the durability and performance of these products.
2-Mercaptobenzothiazole is often employed in research and development efforts within the rubber and chemical industries.
2-Mercaptobenzothiazole serves as a reference or benchmark accelerator in studies aimed at developing new rubber formulations or exploring alternative accelerators.
2-Mercaptobenzothiazole may find applications in the textile industry, particularly in the production of rubberized fabrics.
The vulcanization process enhances the strength and resilience of rubber-coated textiles used in various applications.
Certain rubber components used in the oil and gas industry, such as seals and gaskets, may undergo vulcanization with accelerators like 2-Mercaptobenzothiazole.
This is to ensure that these rubber parts can withstand the demanding conditions encountered in oil and gas applications.
2-Mercaptobenzothiazole need to adhere to regulatory standards and guidelines related to its production, handling, and disposal.
2-Mercaptobenzothiazolemight be used to enhance the properties of retreaded tires.
Vulcanization during retreading is crucial for maintaining the performance and safety of the tire.
2-Mercaptobenzothiazole may be used in the formulation of metalworking fluids to inhibit the corrosion of copper components.
2-Mercaptobenzothiazole acts as a corrosion inhibitor in such applications.
2-Mercaptobenzothiazole may find applications in the construction industry, particularly in the production of rubberized materials used for seals, gaskets, and other components in construction projects.
The vulcanization process enhances the durability and performance of these rubber products.
In the manufacturing of foam rubber products, such as cushions and padding,
2-Mercaptobenzothiazole may be used as an accelerator in the vulcanization process to impart the necessary properties for comfort and resilience.
2-Mercaptobenzothiazole can be used in the footwear industry to accelerate the vulcanization of rubber soles and components.
This ensures the production of durable and long-lasting footwear, particularly in the case of shoe soles.
2-Mercaptobenzothiazole is often used as a model compound in research studies focused on understanding the vulcanization mechanisms in rubber.
2-Mercaptobenzothiazole serves as a representative example in investigations into the complex chemistry of rubber curing.
Rubber components used in the automotive industry, such as seals, gaskets, and engine mounts, may undergo vulcanization with accelerators like 2-Mercaptobenzothiazole.
This is to enhance the mechanical properties and longevity of these components.
2-Mercaptobenzothiazole can be employed in the modification of certain polymers to enhance their properties.
This may include the improvement of thermal stability, mechanical strength, or other characteristics in specific applications.
2-Mercaptobenzothiazole has been investigated for its potential role as a corrosion inhibitor.
2-Mercaptobenzothiazole can form complexes with metal ions and contribute to reducing corrosion in certain systems.
Ongoing research focuses on developing sustainable and eco-friendly alternatives to traditional rubber accelerators like 2-Mercaptobenzothiazole.
The aim is to reduce the environmental impact of rubber processing.
2-Mercaptobenzothiazole, such as footwear and consumer goods, must adhere to regulatory standards to ensure the safety of consumers.
Compliance with regulations is essential, especially in applications where there is direct contact with end-users.
Rubber components in agricultural equipment, such as conveyor belts and seals, may undergo vulcanization using accelerators like 2-Mercaptobenzothiazole.
This ensures that the rubber parts can withstand the harsh conditions of agricultural operations.
Properties of 2-Mercaptobenzothiazole:
2-Mercaptobenzothiazole is Light yellow or off-white powder, granules.
The relative density of 2-Mercaptobenzothiazole is 1.42(20%), the specific gravity is 1.49±0.03, the melting point is above 180.02~181.7℃ (For the industrial products, it is above 170.0℃).
2-Mercaptobenzothiazole will burn when meet with naked flame, the flash point is 515～520℃.
2-Mercaptobenzothiazole is easily soluble in acetic ether, acetone, soluble in dichloromethane, diethyl ether, some other organic solvent and alkali carbonate solution.
2-Mercaptobenzothiazole is slightly soluble in benzene. Insoluble in water and gasoline.
Lower explosion limit of 2-Mercaptobenzothiazole is 21g/m3.
The storage stability period of 2-Mercaptobenzothiazole is two years.
Structure of 2-Mercaptobenzothiazole:
The molecule is planar with a C=S double bond, so the name mercaptobenzothiazole is a misnomer, a more appropriate name could be benzothiazoline-2-thione.
Solution measurements by NMR spectroscopy could not measure the presence of the thiol tautomer that the name implies, instead it exists as a thione/dithiocarbamate and the hydrogen appears on the nitrogen in the solid state, gas-phase, and in solution.
Theory indicates that the thione tautomer is about 39 kJ/mol lower in energy than the thiol, and a hydrogen-bonded dimer of the thione has even lower energy.
At alkaline pH greater than 7 the deprotonated thiolate form is most abundant.
A protonated form could not be observed in the pH range 2-11.
Synthesis of 2-Mercaptobenzothiazole:
2-Mercaptobenzothiazole has been produced by many methods.
The industrial route entails the high temperature reaction of aniline and carbon disulfide in the presence of sulfur, which proceeds by this idealized equation:
C6H5NH2 + CS2 + S → C6H4(NH)SC=S + H2S
The traditional route is the reaction of 2-aminothiophenol and carbon disulfide:
C6H4(NH2)SH + CS2 → C6H4(NH)SC=S + H2S
This method was developed by the discoverer of 2-Mercaptobenzothiazole, A. W. Hoffmann.
Other routes developed by Hoffmann include the reactions of carbon disulfide with 2-aminophenol and of sodium hydrosulfide with chlorobenzothiazole.
Further synthetic advances were reported in the 1920s that included demonstration that phenyldithiocarbamates pyrolyze to benzothiazole derivative.
Reactions of 2-Mercaptobenzothiazole:
2-Mercaptobenzothiazole is insoluble in water but dissolves upon the addition of base, reflecting deprotonation.
Treatment with Raney nickel results in monodesulfurization, giving benzothiazole:
C6H4(NH)SC=S + Ni → C6H4(N)SCH + NiS
The benzo ring undergoes electrophilic aromatic substitution at the position para to nitrogen.
Oxidation gives mercaptobenzothiazole disulfide.
This disulfide reacts with amines to give sulfenamide derivatives such 2-morpholinodithiobenzothiazole.
These compounds are used in sulphur vulcanization, where they act as accelerators.
Handling And Storage of 2-Mercaptobenzothiazole:
Conditions for safe storage, including any incompatibilities:
Storage conditions:
Tightly closed.
Dry.
Stability And Reactivity of 2-Mercaptobenzothiazole:
Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature) .
Incompatible materials:
No data available
Safety Profile of 2-Mercaptobenzothiazole:
Suspected carcinogen withexperimental carcinogenic and tumorigenic data.
Poisonby ingestion and intraperitoneal routes.
Experimentalteratogenic and reproductive effects.
2-Mercaptobenzothiazole has a low toxicity in mice, with LD50 of >960 mg/kg.
Studies have identified it as a potential human carcinogen.
In 2016, 2-Mercaptobenzothiazole was identified by the World Health Organization as probably carcinogenic to humans.
2-Mercaptobenzothiazole causes allergic contact dermatitis.
The derivative morpholinylmercaptobenzothiazole is a reported allergen in protective gloves, including latex, nitrile, and neoprene gloves.
2-Mercaptobenzothiazole becomes air-borne as a result of wear on car tires, and is able to be inhaled.
First Aid Measures of 2-Mercaptobenzothiazole:
General advice:
Show this material safety data sheet to the doctor in attendance.
If inhaled:
After inhalation:
Fresh air.
In case of skin contact:
Take off immediately all contaminated clothing.
Rinse skin with water/ shower.
Consult a physician.
In case of eye contact:
After eye contact:
Rinse out with plenty of water.
Remove contact lenses.
If swallowed:
After swallowing:
Immediately make victim drink water (two glasses at most).
Consult a physician.
Indication of any immediate medical attention and special treatment needed:
No data available
Fire Fighting Measures of 2-Mercaptobenzothiazole:
Suitable extinguishing media:
Water
Foam
Carbon dioxide (CO2)
Dry powder
Unsuitable extinguishing media:
For this substance/mixture no limitations of extinguishing agents are given.
Further information:
Suppress (knock down) gases/vapors/mists with a water spray jet.
Prevent fire extinguishing water from contaminating surface water or the ground water system.
Accidental Release Measures of 2-Mercaptobenzothiazole:
Environmental precautions:
Do not let product enter drains.
Methods and materials for containment and cleaning up:
Cover drains.
Collect, bind, and pump off spills.
Observe possible material restrictions.
Take up dry.
Dispose of properly.
Clean up affected area
Exposure Controls/Personal Protection of 2-Mercaptobenzothiazole:
Personal protective equipment:
Eye/face protection:
Use equipment for eye protection.
Safety glasses
Skin protection:
Handle with gloves.
Wash and dry hands.
Full contact:
Material: Nitrile rubber
Minimum layer thickness: 0,11 mm
Break through time: 480 min
Splash contact:
Material: Nitrile rubber
Minimum layer thickness: 0,11 mm
Break through time: 480 min
Body Protection:
Respiratory protection:
Recommended Filter type: Filter type P2
Control of environmental exposure:
Do not let product enter drains.
Identifiers of 2-Mercaptobenzothiazole:
Chemical formula: C7H5NS2
Molar mass: 167.24 g·mol−1
Appearance: white solid
Melting point: 177–181 °C (351–358 °F; 450–454 K)
Molecular Weight: 167.3 g/mol
Molecular Formula: C7H5NS2
Molecular Weight: 167.25
Melting Point: 185°F / 85°C
Boiling Point: N/A
Flash Point: 500°F / 260°C
Appearance: pale yellow to tan crystalline powder (est)
Assay: 95.00 to 100.00
Food Chemicals Codex Listed: No
Soluble in: water, 120 mg/L @ 24C (exp)
Melting Point: 172.0°C to 182.0°C
Color: Yellow
Flash Point: 243°C
Infrared Spectrum: Authentic
Beilstein: 27, II, 233
Merck Index: 15, 5935
Solubility Information: yellow solution
Formula Weight: 167.24
Percent Purity: 97%
Physical Form: Powder
Chemical Name or Material: 2-Mercaptobenzothiazole, 98%
Molecular Weight: 167.25100
Exact Mass: 167.25
EC Number: 205-736-8
HScode: 29342020
CAS number: 149-30-4
EC index number: 613-108-00-3
EC number: 205-736-8
Hill Formula: C₇H₅N S₂
Molar Mass: 167.25 g/mol
HS Code: 2934 20 20
Boiling point: >260 °C decomposes
Density: 1.42 g/cm3 (20 °C)
Explosion limit: 15 %(V)
Flash point: 200 °C
Ignition temperature: 465 °C
Melting Point: 177 - 181 °C
pH value: 7 (0.12 g/l, H₂O, 25 °C)
Vapor pressure: Bulk density: 390 kg/m3
Solubility: 0.12 g/l
Appearance: Light yellow or off-white powder or granule
Initial Melting Point（℃≥）: 170
Properties of 2-Mercaptobenzothiazole:
XLogP3: 2.4
Hydrogen Bond Donor Count: 1
Hydrogen Bond Acceptor Count: 2
Rotatable Bond Count: 0
Exact Mass: 166.98634151 g/mol
Monoisotopic Mass: 166.98634151 g/mol
Topological Polar Surface Area: 69.4Ų
Heavy Atom Count: 10
Complexity: 158
Isotope Atom Count: 0
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 0
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Covalently-Bonded Unit Count: 1
Compound Is Canonicalized: Yes
Physical state: crystalline
Color: light yellow
Odor: pungent
Melting point/freezing point:
Melting point/range: 177 - 181 °C - lit.
Initial boiling point and boiling range: > 260 °C Decomposes on heating.
Flammability (solid, gas): No data available
Upper/lower flammability or explosive limits:
Lower explosion limit: 15 %(V)
Flash point: 200 °C - closed cup - ISO 1523
Autoignition temperature: does not ignite
Decomposition temperature: No data available
pH: No data available
Viscosity
Viscosity, kinematic: No data available
Viscosity, dynamic: No data available
Water solubility: 0,118 g/l at 25 °C
Partition coefficient: n-octanol/water:
log Pow: 2,42 - Bioaccumulation is not expected.
Vapor pressure: No data available
Density: 1,42 g/cm3 at 20 °C
Relative density: No data available
Relative vapor density: No data available
Particle characteristics: No data available
Explosive properties: No data available
Oxidizing properties: none
Other safety information:
Dissociation constant: 7,03 at 20,5 °C
PSA: 79.93000
XLogP3: 2.58500
Appearance: 2-mercaptobenzothiazole is a pale yellow to tan crystalline powder with a disagreeable odor.
Density: 1.42 g/cm3
Melting Point: 180.2-181.7 °C
Boiling Point: 305ºC at 760 mmHg
Flash Point: 243ºC (dec.)
Refractive Index: 1.783
Water Solubility: Solubility in water, g/100ml at 20°C: 0.01 (very poor)
Storage Conditions: Store in a tightly closed container.
Store in a cool, dry, well-ventilated area away from incompatible substances.
Vapor Pressure: 0.000844mmHg at 25°C
Explosive limit: vol% in air: 15
Odor: Disagreeable odor
Taste: Bitter taste
Molecular Weight: 167.3
Appearance :Powder
Physical State :Solid
Storage :Store at room temperature
Melting Point :177-181° C (lit.)
Boiling Point :>260° C (dec.)
Density :1.42 g/cm3 at 20° C
Appearance: complying
Identity (IR): complying
Assay (alkalimetric): Min. 98 %
Melting point: 178 - 181 °C
Colour of the solution: complying
Clearness of the solution: complying
Boiling Point/Range: No data available
Color: Light Yellow
Density: 1.42 g/cm3 (20 °C)
Flashpoint: 200 °C
Form: Powder
Grade: Indicators
Incompatible Materials: Oxidizing agents
Lower Explosion Limit: No data available
Melting Point/Range: 180-182 °C
Partition Coefficient: 2.42.7
Purity Percentage: 99.00
Purity Details: >=99.00%
Solubility in Water: 0.118 g/l (25 °C)
Upper Explosion Limit: No data available
Vapor Pressure: No data available
Viscosity: No data available
pH-Value: No data available
Storage Temperature: Ambient
Melting point: 177-181 °C(lit.)
Boiling point: 223°C (rough estimate)
Density: 1.42
vapor pressure: refractive index: 1.6100 (estimate)
Flash point: 243 °C
storage temp.: Store below +30°C.
solubility: 0.12g/l
form: Powder
pka: 9.80±0.20(Predicted)
color: Yellow
PH: 7 (0.12g/l, H2O, 25℃)
Odor: Odorless
explosive limit 15%(V)
Water Solubility: Sensitive: Air Sensitive
λmax: 325nm(MeOH)(lit.)
Merck: 14,5868
BRN: 119484
Stability: Stable. Incompatible with strong oxidizing agents. Flammable.
InChIKey: YXIWHUQXZSMYRE-UHFFFAOYSA-N
LogP: 2.86
