Description

Solvent Red 33 is a high-purity, synthetic organic dye belonging to the solvent dye class, characterized by its excellent solubility in non-polar to moderately polar organic media. This compound is valued for its strong, vivid coloration and stability in formulated products, making it a critical component for imparting consistent and durable red hues. It is primarily utilized by manufacturers in the plastics, inks, coatings, and specialty chemical industries where precise color matching and performance are essential.

Application

• Primary coloring agent for polymers and plastics, including polystyrene, ABS, and polycarbonate.
• Formulation of printing inks for flexographic, gravure, and specialty packaging applications.
• Manufacture of industrial and decorative coatings, including lacquers and wood stains.
• Coloration of fuels, lubricants, and waxes for identification and branding purposes.
• Production of colored pencils, crayons, and artist materials.
• Tinting agent for specialty solvents and cleaning formulations.

Basic Information

Product Name	Solvent Red 33
CAS No.	61813-61-4
Molecular Formula	C24H21N3O2
Molecular Weight	383.44 g/mol
Synonyms	Solvent Red 33; Ceres Red BB; 1-[[4-(Phenylazo)phenyl]azo]-2-naphthol; C.I. 26120; Oil Red BB; Azoic Red BB; Sudan Red BB; 1-[(E)-[4-[(E)-Phenyldiazenyl]phenyl]diazenyl]naphthalen-2-ol
EINECS	Contact for details

Quality Control

Every batch of Solvent Red 33 is manufactured under a strict quality management system. Our products undergo rigorous quality testing to ensure compliance with industry standards for color strength, purity, and consistency. Certificates of Analysis (COA) detailing key parameters such as assay, hue, and solubility are available upon request to support your quality assurance protocols.

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 powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Color Strength	100 ± 3%
Moisture (KF)	≤ 1.0%
Ash Content	≤ 0.5%
Solubility	Complete in toluene

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