NOVOPERM RED F5RK

Novoperm Red F5RK is a synthetic azo pigment derived from naphthalenecarboxamide and substituted aromatic azo compounds.
Novoperm Red F5RK is designed to provide bright, stable red coloration with exceptional lightfastness, heat resistance, and chemical stability.
Novoperm Red F5RK is primarily used in plastics, coatings, inks, and high-performance industrial applications, where its insolubility, dispersibility, and durability ensure long-lasting vibrant color under challenging conditions.

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

Synonyms: Pigment Red 170, 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, RefChem:202629, 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, C26H22N4O4, EINECS 220-509-3, 63661-01-8, Pigment red 170 F5RK, EC 220-509-3, orb2565511, SCHEMBL2139449, SCHEMBL12954916, SCHEMBL14560976, SCHEMBL16191196, SCHEMBL21468586, SCHEMBL29350144, SCHEMBL29467016, BGVYDWVAGZBEMJ-UHFFFAOYSA-N, PYUYQYBDJFMFTH-JJKYIXSRSA-N, HY-D0278, FP41755, C.I.Pigment Red 170 (C.I.12475), DB-214920, CS-0010181, NS00048670, Q15425799, 4-(4-carbamoylphenyl)azo-N-(2-ethoxyphenyl)-3-hydroxy-naphthalene-2-carboxamide, 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; 2-Naphthalene-carboxamide,3-hydroxy-4-(((4-aminocarbonyl)phenyl)azo)-N-(2-ethoxyphenyl), 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

Novoperm Red F5RK is a very strong, blue shade and semi transparent Naphthol AS pigment.
Novoperm Red F5RK is a high-performance, synthetic organic pigment belonging to the class of azo dyes, specifically derived from naphthalenecarboxamide and substituted aromatic azo compounds, which gives it the ability to provide bright, highly stable red coloration in a wide variety of industrial and commercial applications; chemically, it is closely related to Pigment Red 170 (CI 12475) and shares the core structure of a naphthalene ring functionalized with a hydroxyl group and an azo-linked para-substituted amide, which contributes to its excellent lightfastness, heat stability, and resistance to chemical degradation.

Novoperm Red F5RK is used in plastics, coatings, inks, and specialty paints, where its stability under high temperatures, strong solvents, and ultraviolet exposure ensures that products maintain their vibrant red color over long periods of time, even in harsh environmental or processing conditions. 
In addition, the pigment’s insolubility in water and most organic solvents prevents unwanted migration, bleeding, or fading in the final materials, making it particularly valuable in high-performance applications such as automotive coatings, decorative plastics, and industrial printing inks.

Novoperm Red F5RK appears as a finely divided, free-flowing red powder, which can be easily dispersed into various media while maintaining uniform color distribution, and it is engineered to provide consistent color strength, high opacity, and excellent dispersibility, characteristics that are essential for both professional manufacturing and consumer-quality products. 
Its chemical structure and manufacturing process are optimized to minimize impurities and ensure that the pigment meets strict industrial standards for safety, performance, and stability, while its azo linkage and aromatic amide functionality make it resistant to photodegradation, thermal decomposition, and chemical attack, which are critical factors in applications that demand long-term durability and color retention.

Boiling point: 663.2±55.0 °C(Predicted)
Density: 1.395 g/cm3
solubility: Aqueous Acid (Slightly)
pka: 11.46±0.70(Predicted)
form: Powder
color: Orange to red
LogP: 1.28 at 24℃ and pH7Ω

Novoperm Red F5RK is a synthetic organic pigment classified within the azo dye family, which is produced through a diazotization and coupling reaction that links a naphthalenecarboxamide moiety to a para-substituted aromatic amide via an azo (-N=N-) functional group, resulting in a pigment that is chemically robust, highly colored, and structurally stable. 
Novoperm Red F5RK’s aromatic ring system and azo linkage provide it with exceptional resistance to photodegradation, thermal decomposition, and chemical attack, which allows it to retain its vivid red hue under prolonged exposure to sunlight, high temperatures during polymer processing, and aggressive solvents or chemical environments, making it suitable for demanding applications that require long-term color stability and minimal fading.

In terms of physical and chemical properties, Novoperm Red F5RK typically appears as a fine, red powder with a high degree of crystallinity, which can be uniformly dispersed in a wide range of media, including thermoplastics, coatings, printing inks, paints, and varnishes, without significant alteration of viscosity or product performance. 
Its insolubility in water and most organic solvents ensures that it does not bleed, migrate, or leach out of the final product, which is particularly important for applications in automotive coatings, decorative plastics, industrial laminates, and high-quality printing inks, where long-term color integrity is critical.

From a performance perspective, Novoperm Red F5RK is valued not only for its bright, intense red coloration but also for its high opacity, excellent dispersibility, and compatibility with a wide variety of formulation components, including resins, polymers, and binders. 
The pigment’s engineered particle size distribution and surface treatment contribute to improved color strength, uniformity, and stability in both solvent-based and water-based systems.

Novoperm Red F5RK meets industrial standards for lightfastness, heat stability, and chemical resistance, which makes it suitable for applications that undergo extrusion, molding, high-temperature curing, or exposure to outdoor elements.
In addition to its industrial and commercial applications, Novoperm Red F5RK is sometimes used in art materials and specialty coatings where precise, vivid, and durable red coloration is required, demonstrating the versatility of azo pigments in both high-performance engineering applications and consumer-facing products.

Uses:
Novoperm Red F5RK is used in preparation method of cream-like pigment.
Novoperm Red F5RK is primarily used in industrial coatings, paints, and varnishes, where it provides a bright, vivid red coloration that remains stable under prolonged exposure to sunlight, high temperatures, and chemical solvents, making it ideal for automotive coatings, metal protective paints, industrial machinery finishes, and architectural coatings, where both aesthetic appeal and long-term durability are essential. 

Novoperm Red F5RKs high lightfastness, heat resistance, and chemical stability allow formulations to maintain consistent color quality even under harsh environmental conditions, UV exposure, or mechanical wear, which is critical for products that require both visual impact and functional longevity.
In the plastics industry, Novoperm Red F5RK is used to color thermoplastics, thermosets, and engineering polymers, including polyethylene, polypropylene, polystyrene, PVC, and ABS, where it provides uniform dispersion, strong opacity, and resistance to migration or fading during high-temperature processing, such as extrusion, injection molding, or blow molding. 

Its insolubility in most solvents prevents bleeding, leaching, or color loss, making it particularly suitable for consumer goods, household items, decorative components, and automotive parts, where both visual consistency and long-term durability are important.
Novoperm Red F5RK is widely employed in printing inks, including solvent-based, water-based, and UV-curable formulations, for use in commercial printing, packaging, labels, and specialty decorative printing, where it imparts a bright, intense red color with high opacity and uniform coverage. 

Its chemical and thermal stability ensures that the pigment does not degrade or change hue during printing processes, even under conditions involving high-speed presses, heat curing, or exposure to mild chemical cleaners, which helps maintain color fidelity and brand consistency in printed materials.
Beyond standard industrial and printing uses, Novoperm Red F5RK can also be applied in art materials, coatings for ceramics, inks for textiles, and other specialty applications where vivid, durable red coloration is required, and its engineered particle size, dispersibility, and compatibility with multiple binder systems allow it to be incorporated into formulations requiring precision color matching, high opacity, and excellent stability. 

Its reliability under exposure to light, heat, and chemicals makes it a preferred pigment in situations where both aesthetic and functional performance are critical.
Novoperm Red F5RK is used extensively in industrial coatings, plastics, printing inks, and specialty applications, providing bright, durable red coloration with high lightfastness, heat resistance, and chemical stability, and it is valued for its uniform dispersion, high opacity, and long-lasting color retention, which ensures that products maintain consistent appearance and performance even under harsh environmental, processing, or functional conditions.

Novoperm Red F5RK is a versatile high-performance azo pigment that finds application across a wide spectrum of industrial, commercial, and specialty materials, where its bright red coloration, chemical stability, and thermal resistance are required. 
In the automotive and transportation industries, it is used in coatings for vehicles, aircraft components, and heavy machinery, providing long-lasting, fade-resistant color that can withstand UV exposure, fluctuating temperatures, and mechanical abrasion, ensuring that the finished surfaces retain their aesthetic appeal and functional integrity over years of use.

In the plastics and polymer sector, Novoperm Red F5RK is incorporated into thermoplastic and thermoset formulations, including polyethylene, polypropylene, polystyrene, PVC, acrylic resins, and engineering plastics, where it delivers uniform color dispersion, high opacity, and resistance to bleeding or migration, even during high-temperature processing such as extrusion, injection molding, or blow molding, which is essential for consumer goods, household items, packaging materials, and decorative components that require consistent color quality and durability.

In printing and packaging industries, this pigment is used in solvent-based, water-based, and UV-curable inks, offering bright, vivid red coloration with excellent opacity, adhesion, and resistance to fading or chemical attack, making it suitable for labels, commercial printing, specialty graphic arts, and flexible packaging, where long-term color fidelity, resistance to light, and chemical robustness are critical for maintaining branding and product recognition.

Safety Profile:
Novoperm Red F5RK is considered a low-to-moderate toxicity pigment under normal handling and use conditions, but because it is a synthetic azo compound, prolonged or excessive exposure to dust or finely powdered forms may pose respiratory or dermal risks, particularly in industrial environments where large quantities are handled; inhalation of pigment dust may cause temporary irritation of the nose, throat, or respiratory tract, while direct skin contact can result in mild irritation, redness, or itching, especially for individuals with sensitive skin or preexisting dermatological conditions.

In case of accidental eye contact, Novoperm Red F5RK can cause mechanical irritation, redness, or discomfort, although it is not classified as corrosive or strongly sensitizing; repeated or prolonged skin contact with the dry powder may also lead to localized irritation or dermatitis, making the use of protective gloves, goggles, and clothing advisable during handling, particularly in industrial or laboratory settings where dust generation is significant.