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CAS NO:7758-16-9
EC NO:231-835-0
Sodium Acid Pyrophosphate (SAPP-28) is an anhydrous white powdered material, which complies with the specifications of the current Food Chemicals Codex for Sodium Acid Pyrophosphate.
Sodium Acid Pyrophosphate (SAPP-28) is used as an acidulant, buffering agent, and leavening agent.
Sodium Acid Pyrophosphate (SAPP-28) has a dough reaction rate of 24 - 28.
Sodium Acid Pyrophosphate (SAPP-28) is an all-purpose phosphate commonly used in prepared mixes, commercial baking powders, and cake doughnut mixes.
The leavening acid, Sodium Acid Pyrophosphate (SAPP-28) is an important component of double acting baking powder as well as self rising flour.
Sodium Acid Pyrophosphate (SAPP-28) reacts in stages and is desirable in baking applications for its slow action.
Properties of Sodium Acid Pyrophosphate (SAPP-28):
Chemical formula: Na2H2P2O7
Molecular Weight: 221.94
White crystalline powder or granules
Soluble in water
Disodium pyrophosphate or sodium acid pyrophosphate (SAPP) is an inorganic compound consisting of sodium cations and pyrophosphate anion.
Sodium Acid Pyrophosphate (SAPP-28) is a white, water-soluble solid that serves as a buffering and chelating agent, with many applications in the food industry. When crystallized from water, it forms a hexahydrate, but it dehydrates above room temperature. Pyrophosphate is a polyvalent anion with a high affinity for polyvalent cations, e.g. Ca2+.
Sodium Acid Pyrophosphate (SAPP-28) is produced by heating sodium dihydrogen phosphate:
2 NaH2PO4 → Na2H2P2O7 + H2O
Food uses:
Disodium pyrophosphate is a popular leavening agent found in baking powders.
Sodium Acid Pyrophosphate (SAPP-28) combines with sodium bicarbonate to release carbon dioxide:
Na2H2P2O7 + NaHCO3 → Na3HP2O7 + CO2 + H2O
Sodium Acid Pyrophosphate (SAPP-28) is available in a variety of grades that affect the speed of its action. Because the resulting phosphate residue has an off-taste, SAPP is usually used in very sweet cakes which mask the off-taste.
Sodium Acid Pyrophosphate (SAPP-28) and other sodium and potassium polyphosphates are widely used in food processing; in the E number scheme, they are collectively designated as E450, with the disodium form designated as E450(a). In the United States, it is classified as generally recognized as safe (GRAS) for food use. In canned seafood, it is used to maintain color and reduce purge during retorting. Retorting achieves microbial stability with heat.
Sodium Acid Pyrophosphate (SAPP-28) is an acid source for reaction with baking soda to leaven baked goods.In baking powder, it is often labeled as food additive E450.In cured meats, it speeds the conversion of sodium nitrite to nitrite (NO2−) by forming the nitrous acid (HONO) intermediate, and can improve water-holding capacity.
Sodium Acid Pyrophosphate (SAPP-28) is also found in frozen hash browns and other potato products, where it is used to keep the color of the potatoes from darkening.
Sodium Acid Pyrophosphate (SAPP-28) can leave a slightly bitter aftertaste in some products, but "the Sodium Acid Pyrophosphate (SAPP-28) taste can be masked by using sufficient baking soda and by adding a source of calcium ions, sugar, or flavorings."
Other uses:
In leather treatment, it can be used to remove iron stains on hides during processing.
Sodium Acid Pyrophosphate (SAPP-28) can stabilize hydrogen peroxide solutions against reduction.
Sodium Acid Pyrophosphate (SAPP-28) can be used with sulfamic acid in some dairy applications for cleaning, especially to remove soapstone. When added to scalding water, it facilitates removal of hair and scurf in hog slaughter and feathers and scurf in poultry slaughter. In petroleum production, it can be used as a dispersant in oil well drilling muds.
Sodium Acid Pyrophosphate (SAPP-28) is used in cat foods as a palatability additive.
Sodium Acid Pyrophosphate (SAPP-28) is used as a tartar control agent in toothpastes.
Properties:
Chemical formula: Na2H2P2O7
Molar mass: 221.94 g/mol
Appearance: White odorless powder
Density: 2.31 g/cm3
Melting point: >600 °C
Solubility in water: 11.9 g/100 mL (20 °C)
Refractive index (nD): 1.4645 (hexahydrate)
Sodium Acid Pyrophosphate (SAPP-28) is an anhydrous white powdered material,
which complies with the specifications of the current Food Chemicals Codex for Sodium Acid Pyrophosphate.
Sodium Acid Pyrophosphate (SAPP-28) is used as an acidulant, buffering agent, and leavening agent.
Sodium Acid Pyrophosphate (SAPP-28) has a dough reaction rate of 24 – 28.
Sodium Acid Pyrophosphate (SAPP-28) is an all-purpose phosphate commonly used in prepared mixes, commercial baking powders, and cake doughnut mixes.
Benefits:
◆Full rangeofproduct
◆Economical touse – 72 neutralizingvalue
◆12 month shelf-life
◆Can beusedaloneor in combination with otheracids
◆Double-actingleaveningaction
◆Versatileuseleavening, forusein manyproducts
Sodium Acid Pyrophosphate-SAPP28 occurs as a white, crystalline powder.
Sodium Acid Pyrophosphate (SAPP-28) is soluble in water. The pH of a 1:100 aqueous solution is about.
Sodium Acid Pyrophosphate (SAPP-28) may contain a suitable aluminum and/or calcium salt to control the rate of reaction in leavening systems. The baking industry is the largest user Sodium Acid Pyrophosphate within the food industry.
Sodium Acid Pyrophosphate (SAPP-28)s main function is the leavening reaction with Bicarbonate (baking powder). To obtain high quality baked goods, an optimal leavening is required.
As a food additive, it has E number E 450(i).
Disodium pyrophosphate or Sodium acid pyrophosphate is a buffering and chelating agent, with many food and industrial uses.
Sodium Acid Pyrophosphate (SAPP-28) is polyvalent, and acts as a Lewis base, so is effective at binding polyvalent cations.
Chemical Formula: Na2H2P2O7; Molecular weight: 221.94g/mol
Sodium Acid Pyrophosphate (SAPP) is used during the phosphating process of metal treatment.
Sodium Acid Pyrophosphate (SAPP) is used as a builder in acid cleaners.
Sodium Acid Pyrophosphate (SAPP) also sequesters Fe and Cu.
Sodium Acid Pyrophosphate (SAPP-28) is Na2H2P2O7 with Chemical Formula.
Sodium Acid Pyrophosphate (SAPP-28) is a chemical derivative of phosphorus, an important element in life for all living things. One of the most common elements. Foods, water, our body also occurs in natural.
Uses:
-Slow reacting leavening agent.
-Component of baking powder and self-raising flour.
Sodium Acid Pyrophosphate (SAPP-28) is among the most widely used leavening agent, and is offered in a range of leavening speeds, depending on the product type. Non-Leavening is used as a chelate including in meats or industrial products.
Properties:
White powder, soluble in water, insoluble in ethanol. Water solution is alkaline.
Applications:
Used as improving agent in food industry, pH regulating agent, metal ion complex agent, emulsion, dispersing agent and adhesive agent.
Sodium Acid Pyrophosphate (SAPP-28) is applied in the processing of meat and aquatic products in order to hold water, keep the meat fresh and tender, stabilize the natural color and prevent fat from putridity. Also used in the production of yeast powder and cheese etc.
Examples include:
♦ As a constituent of phosphate mixes in meat processing.
♦ As a constituent of emulsifying salts for cheese manufacture.
♦ For use in blanching solutions for preventing after-cooking darkening of potatoes.
♦ As a general buffer and acidifying agent in foodstuffs.
♦ Cosmetics
Application:
-As a leavening agent it is applied to roast food stuffs to control the fermentation speed;
-When applied to instant noodles, it can shorten water resetting time and avoid stickiness and mushiness of the noodles;
-when applied to crakers or cakes, it may shorten fermentation time, lower the breakage ,make the porous space in good order and therefore lengthen the shelf life.
Sodium Acid Pyrophosphate (SAPP-28), or disodium dihydrogen pyrophosphate, its food grade is commonly used with sodium bicarbonate as a leavening agent in bakery products; also, it maintains the color in processed potatoes and also prevents struvite crystal in canned seafood.
Sodium Acid Pyrophosphate (SAPP-28) is an inorganic compound consisting of sodium cations and pyrophosphate anion.
Sodium Acid Pyrophosphate (SAPP-28) is used in food mainly for its two properties:
As a leavening acid which combines with baking soda to release carbon dioxide to improve the texture and volume of baked goods.
As a chelating agent to chelate iron to prevent discoloration in processed potato.
Appearance:
White free-flowing crystalline powder or granular.
Sodium Acid Pyrophosphate (SAPP-28) would hydrolyze to sodium orthophosphate if exposed to the environment.
1. Used as a leavening agent, reducing zymosis time and can also be used as a water retention agent, and a quality improver for meat and sea food processing.
2. Strengthen the feed nutrition.
About Sodium Acid Pyrophosphate (SAPP-28)
Helpful information
Sodium Acid Pyrophosphate (SAPP-28) is registered under the REACH Regulation and is manufactured in and / or imported to the European Economic Area, at ≥ 10 000 to < 100 000 tonnes per annum.
Sodium Acid Pyrophosphate (SAPP-28) is used by consumers, in articles, by professional workers (widespread uses), in formulation or re-packing, at industrial sites and in manufacturing.
Consumer Uses
Sodium Acid Pyrophosphate (SAPP-28) is used in the following products: cosmetics and personal care products, fillers, putties, plasters, modelling clay, adhesives and sealants and coating products.
Other release to the environment of Sodium Acid Pyrophosphate (SAPP-28) is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners) and outdoor use.
Article service life
Release to the environment of Sodium Acid Pyrophosphate (SAPP-28) can occur from industrial use: industrial abrasion processing with low release rate (e.g. cutting of textile, cutting, machining or grinding of metal). Other release to the environment of Sodium Acid Pyrophosphate (SAPP-28) is likely to occur from: outdoor use in long-life materials with low release rate (e.g. metal, wooden and plastic construction and building materials), 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), indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners) and outdoor use. Sodium Acid Pyrophosphate (SAPP-28) can be found in complex articles, with no release intended: vehicles and machinery, mechanical appliances and electrical/electronic products (e.g. computers, cameras, lamps, refrigerators, washing machines). Sodium Acid Pyrophosphate (SAPP-28) can be found in products with material based on: stone, plaster, cement, glass or ceramic (e.g. dishes, pots/pans, food storage containers, construction and isolation material), fabrics, textiles and apparel (e.g. clothing, mattress, curtains or carpets, textile toys), leather (e.g. gloves, shoes, purses, furniture), paper (e.g. tissues, feminine hygiene products, nappies, books, magazines, wallpaper), wood (e.g. floors, furniture, toys) and plastic (e.g. food packaging and storage, toys, mobile phones).
Widespread uses by professional workers
Sodium Acid Pyrophosphate (SAPP-28) is used in the following products: washing & cleaning products, fillers, putties, plasters, modelling clay, metal surface treatment products, non-metal-surface treatment products, hydraulic fluids, pH regulators and water treatment products, lubricants and greases, metal working fluids, heat transfer fluids, laboratory chemicals, leather treatment products, paper chemicals and dyes and textile treatment products and dyes.
Sodium Acid Pyrophosphate (SAPP-28) is used in the following areas: mining, building & construction work and scientific research and development.
Sodium Acid Pyrophosphate (SAPP-28) is used for the manufacture of: metals, fabricated metal products, machinery and vehicles, textile, leather or fur, pulp, paper and paper products and mineral products (e.g. plasters, cement).
Other release to the environment of Sodium Acid Pyrophosphate (SAPP-28) is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners) and outdoor use.
Formulation or re-packing
Sodium Acid Pyrophosphate (SAPP-28) is used in the following products: pH regulators and water treatment products, metal surface treatment products, non-metal-surface treatment products, hydraulic fluids, leather treatment products, lubricants and greases and metal working fluids.
Release to the environment of Sodium Acid Pyrophosphate (SAPP-28) can occur from industrial use: formulation of mixtures, in processing aids at industrial sites, as an intermediate step in further manufacturing of another substance (use of intermediates), formulation in materials, in the production of articles and as processing aid.
Other release to the environment of Sodium Acid Pyrophosphate (SAPP-28) 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 outdoor use in long-life materials with low release rate (e.g. metal, wooden and plastic construction and building materials).
Uses at industrial sites
Sodium Acid Pyrophosphate (SAPP-28) is used in the following products: pH regulators and water treatment products, leather treatment products, hydraulic fluids, metal surface treatment products, non-metal-surface treatment products, lubricants and greases and metal working fluids.
Sodium Acid Pyrophosphate (SAPP-28) is used in the following areas: mining and formulation of mixtures and/or re-packaging.
Sodium Acid Pyrophosphate (SAPP-28) is used for the manufacture of: chemicals, textile, leather or fur, pulp, paper and paper products, metals, fabricated metal products and machinery and vehicles.
Release to the environment of Sodium Acid Pyrophosphate (SAPP-28) can occur from industrial use: in the production of articles, formulation of mixtures, as an intermediate step in further manufacturing of another substance (use of intermediates), in processing aids at industrial sites, formulation in materials and as processing aid.
Other release to the environment of Sodium Acid Pyrophosphate (SAPP-28) 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 outdoor use in long-life materials with low release rate (e.g. metal, wooden and plastic construction and building materials).
Manufacture
Release to the environment of Sodium Acid Pyrophosphate (SAPP-28) can occur from industrial use: manufacturing of the substance, formulation of mixtures, formulation in materials, in processing aids at industrial sites, in the production of articles, as an intermediate step in further manufacturing of another substance (use of intermediates), as processing aid and as processing aid.
Specifications:
Appearance (Colour): White
Appearance (Form): Crystalline powder
Solubility (Turbidity) 0.1M aq. solution: Clear to slight opalascent
Solubility (Colour) 0.1M aq. solution: Colourless
Assay: min. 95%
pH (1% aq. solution): 3.7 - 5.0
Loss on drying: max. 0.5%
Particle Size: 90% Passes 140 mesh (105um)
Sodium Acid Pyrophosphate (SAPP-28) is a leavening agent, preservative, sequestrant, and buffer which is mildly acidic with a ph of 4.1.
Sodium Acid Pyrophosphate (SAPP-28) is moderately soluble in water, with a solubility of 15 g in 100 ml at 25°c.
Sodium Acid Pyrophosphate (SAPP-28) is used in doughnuts and biscuits for its variable gas release rate during the mixing, bench action, and baking process.
Sodium Acid Pyrophosphate (SAPP-28) is used in baking powder as a leavening agent.
Sodium Acid Pyrophosphate (SAPP-28) is used in canned fish products to reduce the level of undesired struvite crystals (magnesium ammonium phosphate hexahydrate) by complexing the magnesium.
Sodium Acid Pyrophosphate (SAPP-28) is used to sequester metals in processed potatoes.
Sodium Acid Pyrophosphate (SAPP-28) is also termed sapp, sodium acid pyrophosphate, acid sodium pyrophosphate, disodium diphosphate, and disodium dihydrogen pyrophosphate.
Industry Uses:
-Corrosion inhibitors and anti-scaling agents
-Feed additive
-Intermediates
-Oil and Gas Exploration
-Processing aids, not otherwise listed
-Processing aids, specific to petroleum production
-chemical distribution
Consumer Uses:
-Metal products not covered elsewhere
-Non-TSCA use
-Oil and Gas Exploration
-Used in drilling mud formulations.
-Water treatment products
-chemical distribution
Industry Processing Sectors:
-All other chemical product and preparation manufacturing
-Fabricated metal product manufacturing
-Feed Manufacturing
-Food, beverage, and tobacco product manufacturing
-Miscellaneous manufacturing
-Oil and gas drilling, extraction, and support activities
-Textiles, apparel, and leather manufacturing
-Utilities
-Wholesale and retail trade
IUPAC names:
Dihydrogenopyrophosphate de disodium
disodium [hydroxy(oxido)phosphoryl] hydrogen phosphate
disodium dihydrogen (phosphonatooxy)phosphonate
Disodium dihydrogen diphosphate
disodium dihydrogen diphosphate
disodium dihydrogen pyrophosphate
Disodium dihydrogenpyrophosphate
disodium dihydrogenpyrophosphate
Disodium dihydrogenpyrophosphate
disodium dihydrogenpyrophosphate
disodium;[hydroxy(oxido)phosphoryl] hydrogen phosphate
Sodium acid pyrophosphate
sodium acid pyrophosphate
Sodium acidpyrophosphate
Sodium acidpyrophosphate
SYNONYMS:
Sodium pyrophosphate [Wiki]
Diphosphate de tétrasodium [French] [ACD/IUPAC Name]
Tetranatriumdiphosphat [German] [ACD/IUPAC Name]
Tetrasodium diphosphate [ACD/IUPAC Name]
[7722-88-5]
10042-91-8 [RN]
13472-36-1 [RN]
14691-80-6 [RN]
156460-73-0 [RN]
231-449-2 [EINECS]
231-767-1 [EINECS]
231-835-0 [EINECS]
7558-80-7 [RN]
7722-88-5 [RN]
7758-16-9 [RN]
93269-17-1 [RN]
Anhydrous tetrasodium pyrophosphate
D05873
Diphosphoric acid sodium salt
Diphosphoric acid tetrasodium salt
DIPHOSPHORIC ACID TRISODIUM SALT
Diphosphoric acid, tetrasodium salt
Diphosphoric acid, tetrasodium saltNatrium pyrophosphatPyrophosphoric acid tetrasodium saltSodium pyrophosphateTSPPTetrasodium pyrophosphate
Disodium pyrophosphate [Wiki]
EINECS 231-767-1
MFCD00003513 [MDL number]
Natrium pyrophosphat [German]
Natrium pyrophosphat
Natrium pyrophosphat [German]
Phosphotex
pyrophosphate
Pyrophosphoric acid tetrasodium salt
Pyrophosphoric acid, tetrasodium salt
SODIUM DIPHOSPHATE
