Description

Solvent Red 8 is a synthetic organic colorant belonging to the azo dye class, identified by CAS NO 33270-70-1. This high-purity solvent dye is valued for its strong tinctorial strength and excellent solubility in non-polar to moderately polar organic media, providing consistent and vibrant coloration. It is primarily utilized by manufacturers in the plastics, ink, and coatings industries seeking reliable and stable colorants for their formulations.

Application

• Plastics Coloring: Used for mass coloration of various polymers, including polystyrene (PS), polycarbonate (PC), and ABS, offering good heat stability during processing.
• Ink Formulations: A key component in solvent-based printing inks for packaging, textiles, and specialty printing, providing bright red shades.
• Industrial Coatings: Imparts color to lacquers, wood stains, and automotive refinish paints where solubility and clarity are critical.
• Waxes & Polishes: Employed in coloring candles, shoe polishes, and floor waxes.
• Fuel & Marker Dyes: Suitable for non-aqueous systems such as hydrocarbon-based fuels or industrial markers.
• Lacquers and Varnishes: Provides transparent, non-bleeding color in clear coating applications.

Basic Information

Product Name	Solvent Red 8
CAS No.	33270-70-1
Molecular Formula	C24H20N4O
Molecular Weight	380.44 g/mol
Synonyms	1-[[4-(Phenylazo)phenyl]azo]-2-naphthol; C.I. Solvent Red 8; Ceres Red BB; Oil Red BB; Azoic Red 3G; Sudan Red BB; Red 2G; 1-[(E)-[4-[(E)-Phenyldiazenyl]phenyl]diazenyl]naphthalen-2-ol
EINECS	251-415-6

Quality Control

Our Solvent Red 8 is manufactured under a stringent quality management system. Every batch is tested to ensure it meets precise specifications for color strength, hue, solubility, and purity. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical properties is provided with each shipment to guarantee consistency and performance for your applications.

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. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Red to dark red powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Color Strength	100 ± 5% (vs. Standard)
Solubility (in Toluene)	Clear, complete solution
Moisture Content (KF)	≤ 1.0%
Ash Content	≤ 0.5%

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