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Pigment red 4

CAS Number
2814-77-9
EC Number
220-562-2
Chemical Formula
C16H10ClN3O3
Molecular Weight
327.72 g/mol

Description

Pigment Red 4 (CAS 2814-77-9 ), also known as D&C Red No. 36, is an azo-based organic pigment delivering a bright, clean red shade across a range of industrial coloring applications. It is used to impart color in plastics, surface coatings, printing inks, and textile substrates where consistent hue and process compatibility are the primary sourcing criteria for manufacturers. In plastics and polymer processing, it is incorporated into masterbatches and compound colorants for consumer and packaging goods requiring vivid red tones and reliable dispersion during production. Coatings formulators use it in solvent-based and industrial paints where strong tinting strength and surface uniformity are required to meet specific aesthetic and performance standards in the field. In printing and packaging, it is selected for gravure and flexographic ink systems targeting high-impact red reproduction on paper and film substrates for various commercial branding needs. Textile and leather processors apply it in dyeing and finishing operations where surface coloration of synthetic and natural materials is needed to achieve specific seasonal or industrial colors. The product is supplied as a dry powder, the standard commercial form for dispersion into resin, solvent, or aqueous systems. Technical grade is the primary market offering available. Product specifications are typically defined by color strength, purity, and particle size distribution. Packaging is available in fiber drums or bags suited to bulk industrial procurement and logistics. Contact us for supply of Pigment red 4 Request Quote

Other Names (Synonyms)

1-((2-Chloro-4-nitrophenyl)azo)-2-naphthol | RefChem:572551 | D and C Red No. 36 | D&C Red No. 36 | CI 12085 | OE8ZA0KN9Z | Flaming Red | 2-Naphthalenol, 1-[2-(2-chloro-4-nitrophenyl)diazenyl]-

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Boiling Point558.9±50.0 °C(Predicted)
Density1.4414 (rough estimate)
ColorOrange to Brown
Formpowder to crystal
Refractive Index1.6470 (estimate)
Log P5.252 (est)

Safety & Handling

Warning
GHS07· Irritant

Hazard Statements

H319Causes serious eye irritation
H413May cause long lasting harmful effects to aquatic life

Precautionary Statements

P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code3204.17.0485