Solvent Red 23|Sudan Red 3|CAS 85-86-9

Solvent Red 23

Chinese aliases: Transparent Red HRR, Solvent Red 23, Oil-soluble Apricot Yellow, Yellowish Oil-soluble Red, Sudan Red 3, Benzeneazo Benzeneazo-2-naphthol, Phenylazo(4-azo-1)-2-naphthol
English name: Solvent Red 23

CAS: 85-86-9
EINECS registration number: 201-638-4
Chemical category: Disazo solvent dye
Hue/Color: Yellowish red
Molecular formula: C22H16N4O

Physical form: Brownish-red powder, which may appear in different colors under specific conditions, such as turning brownish-green when crystallized with acetic acid.
Heat resistance: 160°C
Lightfastness: Grade 3-4
Weather resistance: Grade 3-4
Acid resistance: Grade 3-4
Migration resistance: Grade 3-4
Solubility: Highly soluble in various organic solvents.
Coloring power: High tinting strength with bright and vivid tones, providing a durable red appearance to products.

Application fields: Suitable for coloring and spinning in plastics, inks, coatings, paints, chemical fibers, polyester, nylon, acetate fibers, etc.
Plastics industry: Used for coloring various plastics such as polystyrene, polycarbonate, polypropylene, and ABS resin. Products dyed with Solvent Red 23 exhibit vibrant colors along with excellent heat and light resistance, making them suitable for outdoor and high-temperature environments. It is also used for coloring organic glass, rigid PVC, and other materials, offering a wide range of color options.
Ink industry: Widely used in the production of oil-based inks and printing inks, such as packaging printing inks and metal decorative inks, due to its strong color intensity and transparency.
Coatings and paints industry: Suitable for solvent-based coatings and paint formulations, providing uniform and bright red coloration.
Cosmetics industry: Used for coloring non-water-soluble cosmetic products like lipsticks and nail polishes, ensuring compliance with safety and regulatory standards.


Our company's annual production capacity for this product reaches 2,000 tons. It is mainly sold to North China, South China, Northeast China, Hebei, Shandong, Tianjin, Beijing, Liaoning, Shanxi, Anhui, Zhejiang, Guangzhou, and other provinces and cities across the country.

Our company primarily produces Benzidine Yellow, Permanent Yellow 2G, Permanent Yellow 2GS, Permanent Yellow HR, 1151 Permanent Orange G, Permanent Orange G, Rhodamine 6B, 3118 Lightfast Scarlet BBN, 3120 Lightfast Scarlet (Brilliant) BBC, Permanent Red 2BP, 808 Scarlet Powder, 3132 Scarlet Powder, Pigment Orange 34, Golden Red, Golden Yellow, Phthalocyanine Blue B, Phthalocyanine Green G, Phthalocyanine Blue BGS, Fertilizer Coloring Pigments, Dry Powder Fire Extinguisher Coloring Pigments, Fire Extinguisher Dry Powder Coloring Pigments, Solvent Yellow 14, Solvent Yellow 16, Solvent Yellow 56, Solvent Red 23, Solvent Red 24, Solvent Red 27, and other products.