PIGMENT RED 170

Pigment Red 170 is produced synthetically by converting p-aminobenzamide into the corresponding diazonium compound followed by coupling with 3-hydroxy-2-naphththoic acid (2-ethoxy)anilide ("Naphtol AS-PH" dye precursor).
Pigment Red 170, also known by its Chemical Abstracts Service (CAS) number 2786-76-7, is a synthetic organic pigment that falls under the category of azo pigments. 
Pigment Red 170 is primarily used for coloring various materials such as paints, coatings, inks, plastics, and textiles. 

CAS Number: 2786-76-7
Molecular Formula: C26H22N4O4
Molecular Weight: 454.48
EINECS Number: 220-509-3

Synonyms: 2786-76-7, Permanent Red F 3RK70, 54O6PK8790, SUNBRITE RED 170, DTXSID7029243, 2-Naphtho-o-phenetidide, 4-((p-carbamoylphenyl)azo)-3-hydroxy-, 2-Naphthalenecarboxamide, 4-((4-(aminocarbonyl)phenyl)azo)-N-(2-ethoxyphenyl)-3-hydroxy-, 4-[[4-(Aminocarbonyl)phenyl]azo]-N-(2-ethoxyphenyl)-3-hydroxynaphthalene-2-carboxamide, CI 12475, 2-Naphthalenecarboxamide, 4-[[4-(aminocarbonyl)phenyl]azo]-N-(2-ethoxyphenyl)-3-hydroxy-, 4-((4-(Aminocarbonyl)phenyl)azo)-N-(2-ethoxyphenyl)-3-hydroxy-2-naphthalenecarboxamide, 2-Naphthalenecarboxamide, 4-(2-(4-(aminocarbonyl)phenyl)diazenyl)-N-(2-ethoxyphenyl)-3-hydroxy-, 4-((4-(Aminocarbonyl)phenyl)azo)-N-(2-ethoxyphenyl)-3-hydroxynaphthalene-2-carboxamide, 2-Naphthalenecarboxamide, 4-[2-[4-(aminocarbonyl)phenyl]diazenyl]-N-(2-ethoxyphenyl)-3-hydroxy-, 220-509-3, DTXCID00809853, 4-[(4-carbamoylphenyl)diazenyl]-N-(2-ethoxyphenyl)-3-hydroxynaphthalene-2-carboxamide, Pigment Red 170 (Technical Grade), 4-4-(Aminocarbonyl)phenylazo-N-(2-ethoxyphenyl)-3-hydroxynaphthalene-2-carboxamide, Permanent Red F 5RK, UNII-54O6PK8790, HSDB 3901, EINECS 220-509-3, 63661-01-8, Pigment red 170 F5RK, EC 220-509-3, SCHEMBL2139449, SCHEMBL12954916, SCHEMBL14560976, SCHEMBL16191196, SCHEMBL21468586, BGVYDWVAGZBEMJ-UHFFFAOYSA-N, PYUYQYBDJFMFTH-JJKYIXSRSA-N, HY-D0278, FP41755, C.I.Pigment Red 170 (C.I.12475), DB-214920, CS-0010181, NS00048670, Q15425799, 4-[(E)-(4-carbamoylphenyl)diazenyl]-N-(2-ethoxyphenyl)-3-hydroxy-2-naphthamide, (4Z)-4-[(4-carbamoylphenyl)hydrazinylidene]-N-(2-ethoxyphenyl)-3-oxo-naphthalene-2-carboxamide, 4-((4-(AMINOCARBONYL)PHENYL)AZO)-N-(2-ETHOXYPHENYL)-3- HYDROXY-2-NAPHTHALENECARBOXAMIDE, 4-((4-(AMINOCARBONYL)PHENYL)AZO)-N-(2-ETHOXYPHENYL)-3- HYDROXYNAPHTHALENE-2-CARBOXAMIDE, PIGMENT RED 170;4-[[4-(Aminocarbonyl)phenyl]azo]-N-(2-ethoxyphenyl)-3-hydroxynaphthalene-2-carboxamide;C.I. 12475;F2RK;F5RK;NAPTHOL RED F3RK;NAPTHOL RED F5RK;PR170 F3RK

Pigment Red 170 is an organic pigment extensively used in automotive coatings and painting.
In the solid state the hydrazo tautomer forms and several crystal structures exist. 
In the initial α polymorph the molecules are arranged in a herringbone pattern with extensive hydrogen bonding. 

The φ polymorph is more dense and more stable and produced industrially by thermal treatment in water at 130°C under pressure. 
In this phase the molecules are planar and arranged in layers. 
Extensive hydrogen bonding exists within the layer but between layers the only interactions are Van der Waals forces. 

Dense crystal structures are preferred for pigments used in coatings because in the event of photochemical decomposition the fragments are locked in place and are able to recombine. 
Research shows that by replacing the ethoxy group in this compound by a methoxy group the crystal structure is less stable and in the final application and the color fades more easily. 
By careful selection of substituents it is possible to optimize crystal structure and improve optical properties.

This pigment is characterized by its bright, vivid red hue, which is highly valued for its strong color intensity and excellent lightfastness, making it suitable for both indoor and outdoor applications.
Chemically, Pigment Red 170 is composed of a complex azo structure, often represented as 4-[(4-carbamoylphenyl)diazenyl]-N-(2-ethoxyphenyl)-3-hydroxynaphthalene-2-carboxamide. It is often used in the creation of products that require a stable, non-fading color, such as in automotive finishes, art supplies, and high-performance coatings. 

The pigment is known for its resistance to heat and its stability when exposed to light, which is why it is preferred in many long-lasting and durable applications.
Additionally, Pigment Red 170 has been designated with various identification numbers and codes, such as CI 12475, EINECS 220-509-3, and the UNII identifier 54O6PK8790. 

The pigment is available in different grades depending on the required application, ranging from technical grades used in industrial products to more refined versions used in artistic materials. 
Despite its high stability and durability, the pigment is typically handled with care to avoid exposure to large amounts of dust or direct ingestion, as with any industrial chemical.

Boiling point:663.2±55.0 °C(Predicted)
Density 1.395 g/cm3
solubility Aqueous Acid (Slightly)
pka11.46±0.70(Predicted)
form Powder
color Orange to red
LogP1.28 at 24℃ and pH7

Pigment Red 170, also referred to by its C.I. (Color Index) number 12475, is a highly specialized organic pigment that belongs to the class of azo pigments, characterized by their strong color intensity and durability. 
This pigment is primarily used in applications that demand a rich red color, such as paints, coatings, printing inks, plastics, and textiles. 
Its vivid red color is highly sought after for applications that require both aesthetic appeal and long-term stability.

Chemically, Pigment Red 170 has a molecular structure that includes an azo bond (–N=N–) linking two aromatic rings, with additional functional groups like carbamoyl and hydroxyl groups attached to a naphthalene core. 
This structure contributes to the pigment's excellent resistance to light, heat, and weathering, which is crucial for products exposed to outdoor conditions, such as automotive finishes and exterior paints. 
As a result, it is commonly used in industrial and commercial coatings, where color longevity is essential.

In addition to its practical applications, Pigment Red 170 is also used in high-performance inks for printing on a variety of materials, from paper to plastic substrates. 
Its high tinting strength and stability ensure that it maintains its color integrity under diverse environmental conditions, making it ideal for packaging materials, promotional items, and labels that require durable, eye-catching colors. 
Moreover, this pigment finds its place in specialized applications like colorants in cosmetic formulations, such as lipsticks and nail polishes, due to its non-toxic properties when used in regulated amounts.

While Pigment Red 170 is relatively safe when used in accordance with safety guidelines, it should still be handled with care, especially in its powdered form, to avoid inhalation or direct contact with the eyes and skin. 
Exposure to large amounts of pigment dust could lead to respiratory irritation or other health risks. 
For industrial use, it is important to follow appropriate safety measures, including wearing protective equipment and ensuring proper ventilation during the handling and application of the pigment.

Overall, Pigment Red 170 offers a versatile, long-lasting, and vibrant solution for a variety of coloring needs across industries, including the automotive, paint, plastic, printing, and cosmetics sectors. 
Its chemical composition and stability make it a reliable choice for demanding applications requiring both aesthetic quality and durability.
In the solid state the hydrazo tautomer forms and several crystal structures exist. 

In the initial α polymorph the molecules are arranged in a herringbone pattern with extensive hydrogen bonding. 
The φ polymorph is more dense and more stable and produced industrially by thermal treatment in water at 130°C under pressure. 
In this phase the molecules are planar and arranged in layers. 

Extensive hydrogen bonding exists within the layer but between layers the only interactions are Van der Waals forces. 
Dense crystal structures are preferred for pigments used in coatings because in the event of photochemical decomposition the fragments are locked in place and are able to recombine. 

Research shows that by replacing the ethoxy group in Pigment Red 170 by a methoxy group the crystal structure is less stable and in the final application and the color fades more easily. 
By careful selection of substituents it is possible to optimize crystal structure and improve optical properties.

Uses Of Pigment Red 170:
Pigment Red 170 is used in preparation method of cream-like pigment.
Pigment Red 170, also known as C.I. 12475, is widely utilized across various industries due to its vibrant red color, exceptional durability, and excellent resistance to environmental factors. 
This pigment finds extensive use in the formulation of paints and coatings, particularly in automotive finishes, industrial coatings, and architectural paints.

Pigment Red 170s ability to withstand exposure to light, heat, and weathering makes it particularly suitable for applications where long-term color retention is crucial, such as exterior paints for buildings, outdoor furniture, and vehicles. 
The pigment’s strong color properties and durability make it ideal for high-performance coatings that need to maintain their appearance even in harsh conditions.
In addition to its use in coatings, Pigment Red 170 is a key ingredient in printing inks, where it is used to produce vibrant, high-quality red tones. 

Pigment Red 170 is especially common in inks for packaging, labels, and promotional materials, where its stability ensures that the printed colors remain bright and consistent over time, even under exposure to sunlight, humidity, and temperature variations. 
This durability in printed materials is essential for ensuring that packaging and labels remain visually appealing throughout their shelf life.
Furthermore, Pigment Red 170 is used in the plastic industry as a colorant for plastic products, ranging from consumer goods to industrial components. 

In this context, it provides a durable, consistent red color that resists fading, making it suitable for items that will be exposed to outdoor conditions or handled frequently.
The pigment’s excellent color strength also means that only a small amount is needed to achieve the desired color intensity, making it an economical choice for manufacturers.
The pigment is also employed in the cosmetic industry, where it is used in products such as lipsticks, nail polishes, and other color cosmetics. Pigment Red 170 is valued in this field for its rich red hues and its ability to be safely used in formulations that come into direct contact with the skin. 

Pigment Red 170s non-toxic nature when used within the regulatory limits ensures that it is a reliable choice for cosmetic manufacturers, particularly for products that require vivid and long-lasting color.
In the textile industry, Pigment Red 170 is sometimes used to dye fabrics, especially synthetic fibers and other materials that require strong color saturation. 
Its application in textile products allows manufacturers to create fabrics with high color fastness, ensuring that the colors remain intact even after repeated washing or exposure to sunlight. 

This makes it a favored choice for garments and fabrics intended for outdoor or active wear.
Additionally, this pigment is used in some specialized applications, such as in the production of arts and crafts materials, where its vibrant hue adds a bold touch to artwork and design projects. 
Pigment Red 170’s versatility across various industries underscores its importance as a colorant that provides both aesthetic appeal and practical benefits in terms of longevity and durability.

Pigment Red 170, also known as C.I. 12475, continues to find diverse uses across industries due to its bright red color, excellent lightfastness, and chemical stability. 
One area where it plays an essential role is in the production of automotive paints and coatings. Automotive manufacturers value Pigment Red 170 for its ability to provide vibrant, long-lasting red finishes on vehicles, maintaining their appearance even under the exposure to environmental stresses such as UV radiation, heat, and humidity. 
The pigment’s resistance to fading is a key factor in automotive applications, as it ensures that the exterior of the vehicle retains its rich, deep color for years, reducing the need for frequent repainting and enhancing the overall aesthetic appeal of vehicles.

In the field of ceramics and glazing, Pigment Red 170 is often used to color glazes and decorative elements, particularly in pottery, tiles, and other ceramic products. 
Its durability and vibrant color make it a popular choice for creating rich, visually striking ceramic pieces that can withstand high firing temperatures without losing color intensity. 
Pigment Red 170 is valued by ceramic artists and manufacturers because it imparts a consistent, stable red hue to their products, ensuring that the finished items maintain their aesthetic quality over time.

Pigment Red 170 is also found in art supplies, especially in oil paints, acrylic paints, and watercolors, where its rich red tones are utilized by professional artists and hobbyists alike. 
In these applications, Pigment Red 170’s high color strength and excellent dispersion in the medium contribute to producing vivid red paints that maintain their hue without fading.
Artists can use Pigment Red 170 to create intense, long-lasting colors in their works, making it a staple for those who need reliable, vibrant pigments in their palettes. 

Pigment Red 170s permanence and resistance to light and environmental factors ensure that artworks retain their original appearance over time.
In the world of packaging, Pigment Red 170 is incorporated into the production of high-quality printing inks, where its vivid, stable red color is essential for printing on various packaging materials, including cartons, bottles, and labels. 
Pigment Red 170 is commonly used for creating packaging designs that need to capture attention while maintaining their color vibrancy over time. 

Pigment Red 170s resistance to fading and environmental degradation ensures that printed materials retain their visual impact throughout the product’s lifecycle, from manufacturing to consumer use.
Moreover, Pigment Red 170 plays a role in various industrial coatings and decorative finishes, such as in the coating of machinery, tools, and consumer goods. 
In these applications, the pigment’s durability ensures that products not only have an appealing appearance but also maintain that appearance despite exposure to chemicals, mechanical wear, and other stress factors encountered during daily use. 

This makes it a preferred option for creating long-lasting and resilient colored finishes in industrial settings.
In addition to these primary uses, Pigment Red 170 has applications in specialty areas like colorants for candles, toys, and fireworks. 
Its versatility in different formulations allows it to be used to achieve bright red hues in various products where color and visual appeal are essential. 

Whether used in decorative items, safety markers, or even for artistic effects in fireworks displays, Pigment Red 170 continues to be valued for its ability to deliver both intensity and durability in its applications.
As industries continue to evolve, Pigment Red 170 is likely to maintain its role as a key ingredient in color formulations that require not only visual appeal but also long-term performance in terms of color stability and resistance to environmental conditions. 
Its widespread use across multiple sectors highlights its versatility, making it an indispensable colorant in both industrial and artistic applications.

Safety Profile Of Pigment Red 170:
Inhalation of Pigment Red 170 dust or fumes can irritate the respiratory tract. 
Long-term exposure to pigment dusts, especially in poorly ventilated areas, may lead to respiratory issues or exacerbate pre-existing conditions such as asthma. 
Pigment Red 170 is important to avoid inhaling the dust or particles generated during the handling or use of the pigment, particularly during the manufacturing or application process.

While Pigment Red 170 is not classified as highly toxic or irritating to the skin, prolonged or repeated skin exposure may cause mild irritation. 
Protective gloves and appropriate protective equipment should be worn when handling the pigment to avoid direct contact, particularly if large amounts of the pigment are being handled or mixed.
Eye exposure to Pigment Red 170 can cause mild irritation, resulting in redness, watering, or discomfort. 

In the case of eye contact, it is advised to rinse the eyes immediately with plenty of water for several minutes and seek medical attention if irritation persists.
Ingesting Pigment Red 170 in large quantities can cause gastrointestinal irritation, nausea, vomiting, or abdominal pain. 
While the pigment is not classified as highly toxic, ingesting any chemical compound in excessive amounts should be avoided. 

Pigment Red 170 is crucial to follow appropriate safety measures to ensure the pigment is not consumed, particularly during its use in industries where food or drink contamination could occur.
While Pigment Red 170 is not readily biodegradable, it can have environmental effects if released in large quantities into water or soil. 
The pigment may accumulate in the environment and could potentially pose a threat to aquatic life if proper disposal methods are not followed. 

Therefore, care should be taken to prevent large spills or improper disposal of the material, and it should be handled in compliance with environmental protection regulations.
Pigment Red 170 is not considered highly flammable, but as with most powdered pigments, it could present a fire hazard if it is present in a suspended form in the air in significant concentrations. 

In these situations, a dust explosion hazard may exist, especially if there is an ignition source present. 
Therefore, it is important to avoid generating excessive dust and ensure that proper ventilation systems are in place when working with powdered forms of this pigment.