Description

C.I. Solvent Red 7 is a high-purity, synthetic organic colorant belonging to the solvent dye class, identified by CAS No. 50926-68-6. It is valued for its excellent solubility in non-polar to moderately polar organic solvents, providing intense and stable coloration. This product is essential for manufacturers requiring consistent, high-performance pigmentation in plastics, inks, and coatings.

Application

• Coloration of plastics and polymers, including polystyrene, acrylics, and polycarbonate.
• Manufacturing of printing inks for flexographic, gravure, and specialty applications.
• Staining and tinting of industrial coatings, wood stains, and lacquers.
• Coloring of waxes, greases, and fuels for identification purposes.
• Production of colored ballpoint pen inks and other writing instruments.
• As a colorant for cosmetic products such as nail polishes and decorative items (where regulatory compliance is confirmed).
• Dyeing of specialty papers and decorative foils.

Basic Information

Item	Details
Product Name	C.I. Solvent Red 7
CAS No.	50926-68-6
Molecular Formula	C₁₈H₁₆N₂O
Molecular Weight	276.34 g/mol
Synonyms	Solvent Red 7; C.I. 60505; 1-[[4-(Phenylazo)phenyl]azo]-2-naphthol; Sudan Red 7; Ceres Red 7; Oil Red 7; Aizen Sudan Red 7; Fat Red 7; C.I. Solvent Red 7 (VAT)
EINECS	256-878-9

Quality Control

Our C.I. Solvent Red 7 is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent purity, color strength, and performance. We provide Certificates of Analysis (COA) with key parameters including assay, hue, and solubility. Our quality commitment supports compliance with relevant industry standards for colorants.

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	Red to dark red powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Color Strength	100 ± 3% (vs. Standard)
Solubility (in Toluene)	Complete, clear solution
Moisture Content (KF)	≤ 0.5%
Ash Content	≤ 0.5%

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