Solvent Yellow 56|Solvent Yellow DE|CAS 2481-94-9

Solvent Yellow 56

Chinese aliases: Oil-soluble Yellow 56, Solvent Yellow DE, Transparent Yellow 3GS, Transparent Yellow 2G
English name: Solvent Yellow 56

Azo-based yellow dye
Appearance: Deep reddish-yellow powder
Molecular formula: C₁₆H₁₉N₃
Molecular weight: 253.34
CAS number: 2481-94-9
EINECS registry number: 219-616-8

Heat resistance: Solvent Yellow 56 exhibits heat resistance up to 220°C in plastics (e.g., PS), maintaining stable color during high-temperature processing.
Lightfastness: It has good lightfastness and is resistant to fading even under prolonged exposure to light.
Tinting strength: High tinting strength with bright and vivid hues, providing excellent visual effects for products.
Solubility: Easily soluble in organic solvents but insoluble in water. This property makes it suitable for applications in coatings, inks, plastics, and more.

Applications: Primarily used for mass coloration of polyester fibers.
Oil coloring: Used for coloring various oils (e.g., lubricants, diesel) to enhance product identification and aesthetics.
Plastic coloring: Widely applied in coloring plastics (e.g., PS, HIPS, RPVC, SAN), imparting vibrant colors and long-lasting stability to products.
Ink coloring: Serves as a colorant in inks for various printed materials, improving color effects and visual appeal.
Other applications: Also used for coloring waxes, fats, and in the preparation of smoke dyes.


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

Our company primarily produces Benzidine Yellow, Permanent Yellow 2G, Permanent Yellow 2GS, Permanent Yellow HR, 1151 Permanent Orange G, Permanent Orange G, Rubine 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, Oil-soluble Yellow 14, Oil-soluble Yellow 16, Oil-soluble Yellow 56, Oil-soluble Red 23, Oil-soluble Red 24, Oil-soluble Red 27, and other products.