Pigment Red 4

Brand	Fineland Chem
Color Index	Pigment Red 4
Color Index No	12085
CAS No	2814-77-9
EC No	220-562-2
Chemical Group	Mono Azo
Chemical Formula	C₁₆H₁₀ClN₃O₃

What is Pigment Red 4

Pigment Red 4 (C.I. 12085) is an organic azo pigment belonging to the β-naphthol pigment class. It is known for producing a bright bluish-red shade and has been widely used in traditional coloring applications such as coatings, printing inks, and certain plastics.

Physical Properties

Test Item	Specification
Colour light	Brilliant yellow light red
Covering power	Translucent
Oil absorption %	34-70
Density	1.45-1.60
Tinting Strength, %	95-105
Ph value	5.5～7.5

Fastness Properties

_{Acid Resistance}	4-5	_{Water Resistance}	5
_{Alkali Resistance}	4-5	_{Oil Resistance}	2-3
_{Alcohol Resistance}	4	Light Fastness (8=excellent)	4-5
_{Heat Resistance(℃)}	140	Light Fastness (8=excellent)	4-5

Typical Applications

Pigment Red 4 is used in a range of conventional coloration applications across several industries.

Typical applications include:

Industrial coatings
Used in general industrial paints and decorative coatings.
Printing inks
Applied in packaging inks, publication inks, and other traditional printing systems.
Plastic coloration
Used in certain general-purpose plastics processed at moderate temperatures.
Rubber and textile printing
Applied in rubber coloration and pigment printing formulations.

Key Performance Properties Related to Applications

The suitability of Pigment Red 4 for different industrial uses is influenced by its pigment chemistry and physical characteristics.

Key performance properties include:

Color shade
Bright bluish-red with moderate chroma.
Tinting strength
Moderate tinting strength suitable for general coloration.
Dispersion characteristics
Can be dispersed in many coating and ink systems using conventional dispersion techniques.
Heat resistance
Moderate thermal stability compared with high-performance organic pigments.
Solvent resistance
Generally compatible with solvents commonly used in coatings and printing inks.

Advantages

Excellent color characteristics: Presents a unique yellowish red hue (between the more yellowish C.I. Pigment Orange 5 and the more bluish C.I. Pigment Red 3), with bright, pure color and high saturation, showing strong color development even at low concentrations.
Strong tinting and covering power: The coloring and covering power of offset printing and packaging ink is excellent, ensuring uniform and consistent colors in application.
Good dispersibility: Can be uniformly dispersed in various substrates and media such as plastics, coatings and inks, with strong adaptability.
Wide application scenarios: Suitable for air-drying paints, baking enamels, shoe polish, floor wax, etc., and can also be used as Food Color Red 36 (USA), especially suitable for indoor and short-term application scenarios.
Sufficient market supply: Multiple commercial grades have been launched in the market, providing a wide range of choices
High cost-effectiveness: Low production and use costs, making it an affordable red pigment option.
Qualified basic performance: Light fastness reaches grade 6, meeting the basic performance requirements of relevant applications.

Typical Limitations

Pigment Red 4 may present limitations in applications requiring higher durability or performance.

Typical limitations include:

Moderate lightfastness, particularly in outdoor exposure
Limited heat resistance compared with modern high-performance pigments
Potential bleeding or migration in some plastic systems
Not typically used in applications requiring long-term weather resistance

Buyer Guidance

When selecting Pigment Red 4 for industrial use, several factors may affect its suitability:

Processing temperature of plastics or coatings
Required durability and lightfastness
Compatibility with resin or binder systems
Dispersion requirements in the final formulation

For applications requiring higher thermal stability or improved weather resistance, alternative pigment types may be evaluated.

Synonyms

C.I. 12085	d.c.redno.36	PIGMENT RED 4	Irgalite Red PRR
Cosmernyl Red R	Flexobrite Red 4G	Solintor Red 4G	Suimei Fast Red B
Predisol Red PR-C	Pigment Red 4 (C.I.)	Spectra D&C Red 36	D&C Red No 36(C23-009)
1-(2-Chloro-4-nitrophenylazo)-2-naphthol	1-((2-chloro-4-nitrophenyl) azo)-2-naphtaleno

Manufacturer and Supplier Information

Pigment Red 4 is manufactured by pigment producers worldwide and supplied primarily in powder form for use in coatings, inks, plastics, rubber, and related industrial applications.

Different grades may vary in particle size distribution, surface treatment, and dispersion characteristics depending on the intended use.

Package and Delivery

● 25KG Kraft Bag, 400kg/500kg Carton Box

● Lead Time: Normally around 15 days after signed contract.

FAQ

1.What color shade does Pigment Red 4 produce?
Pigment Red 4 generally produces a bright bluish-red shade.

2.Is Pigment Red 4 an organic pigment?
Yes. It belongs to the organic azo pigment family, specifically the β-naphthol pigment group.

3.Can Pigment Red 4 be used in printing inks?
Yes. It has been used in a variety of conventional printing ink formulations.

4.Is Pigment Red 4 suitable for high-temperature plastics?
It is typically used in plastics with moderate processing temperatures; higher-temperature systems may require more heat-stable pigments.