Description

C.I. Solvent Black 28 is a high-performance, oil-soluble black dye belonging to the solvent dye class, identified by CAS No. 12237-23-9. It is valued for its excellent solubility in non-polar media and its ability to provide deep, intense coloration with good light and heat stability. This product is essential for manufacturers requiring durable and vibrant black shades in various industrial applications. Key industries that utilize this dye include plastics, inks, coatings, and specialty chemical formulations.

Application

• Primary coloring agent for plastics and synthetic fibers, including polystyrene, ABS, and polycarbonate.
• Manufacturing of high-quality printing inks, especially for flexographic and gravure inks.
• Pigmentation of industrial coatings, automotive finishes, and wood stains.
• Coloring for waxes, polishes, and lubricants.
• Dyeing of fuels and solvents for identification purposes.
• Used in the coloration of ballpoint pen inks and other specialty writing fluids.
• Potential use in the tinting of consumer electronics casings and components.

Basic Information

Item	Details
Product Name	C.I. Solvent Black 28
CAS No.	12237-23-9
Molecular Formula	C29H23N5
Molecular Weight	441.53 g/mol
Synonyms	Solvent Black 28; C.I. 12195; Oil Black 860; Aizen Spilon Black GMH; Sudan Black B; Spirit Black SB; Ceres Black BN; Plast Black 1010; 1-[[4-(Phenylazo)phenyl]azo]-2-naphthalenol
EINECS	Contact for details

Quality Control

Our C.I. Solvent Black 28 is produced under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against key parameters including color strength, solubility, and purity to meet precise customer requirements. A Certificate of Analysis (COA) documenting these results 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 strong acids and incompatible materials. The product is stable under recommended conditions.

Specification

Item	Specification
Appearance	Black powder or granules
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Purity (HPLC)	≥ 98.0%
Solubility (in Toluene)	Complete, clear solution
Moisture Content	≤ 1.0%
Ash Content	≤ 0.5%
Light Fastness	≥ 6-7 (ISO 105-B02)
Heat Stability	≥ 280°C

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