Description

Solvent Yellow 28 is a high-purity, light-sensitive organic dye belonging to the solvent dye class, identified by CAS No. 5844-01-9. It is valued for its excellent solubility in non-polar to moderately polar organic solvents, providing strong, stable coloration. This product is essential for industries requiring precise and durable tinting of plastics, fuels, and various polymeric materials.

Application

• Primary coloration of hydrocarbon-based fuels, including gasoline and heating oils.
• Mass tinting of plastics and synthetic resins such as polystyrene, ABS, and polycarbonate.
• Coloring of waxes, lubricants, and greases for product identification and branding.
• Staining and marking applications in the wood treatment and coating industries.
• Used in the formulation of specialty inks and printing pastes.
• As a colorant for polishes and cleaning products.

Basic Information

Product Name	Solvent Yellow 28
CAS No.	5844-01-9
Molecular Formula	C17H14N2O3
Molecular Weight	294.31 g/mol
Synonyms	Sudan Yellow R; C.I. 12700; Oil Yellow R; Solvent Yellow R; Ceres Yellow R; 1-[[4-[(2,5-Dichlorophenyl)azo]phenyl]azo]-2-naphthol; 1-((p-(2,5-Dichlorophenylazo)phenyl)azo)-2-naphthol
EINECS	227-440-9

Quality Control

Our Solvent Yellow 28 is manufactured under a strict quality management system. Each batch is tested to ensure consistent color strength, purity, and solubility performance. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with every shipment to guarantee compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	Orange to red-brown powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Solubility (in Toluene)	Complete, clear solution
Loss on Drying	≤ 1.0%
Ash Content	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.