Description

Solvent Black 7 is a high-performance, solvent-soluble dye belonging to the azo chemical class, identified by CAS No. 70914-33-9. It is valued for its intense black coloration, excellent solubility in organic solvents, and strong tinting strength, making it a critical component for achieving deep, consistent shades. This product is essential for manufacturers in the plastics, ink, and specialty coatings industries who require reliable, high-quality colorants for their formulations.

Application

• Primary colorant for plastics and synthetic fibers, including polycarbonate, polystyrene, and ABS.
• Key ingredient in the production of industrial inks, such as flexographic, gravure, and specialty printing inks.
• Coloration of wood stains, leather finishes, and decorative coatings.
• Used in the formulation of lacquers and solvent-based paints for automotive and industrial applications.
• Dyeing of waxes, greases, and lubricants for identification and aesthetic purposes.
• Coloring agent for specialty chemicals and research compounds.

Basic Information

Product Name	Solvent Black 7
CAS No.	70914-33-9
Molecular Formula	C29H27N5
Molecular Weight	445.56 g/mol
Synonyms	Solvent Black 7; C.I. Solvent Black 7; Azo Black; Oil Black; Spirit Black; Ceres Black; Sudan Black; Plast Black 7; 1-[[4-(Phenylazo)phenyl]azo]-2-naphthalenol
EINECS	Contact for details

Quality Control

Our Solvent Black 7 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including color strength, solubility, and purity. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance protocols.

Storage

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

Specification

Item	Specification
Appearance	Black powder or granules
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 5% (vs. Standard)
Solubility (in Toluene)	Complete, clear solution
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%

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