Description

Acid Black 210 is a high-performance, synthetic acid dye belonging to the azo chemical class, identified by CAS NO 99576-15-5. It is valued for its excellent color strength, good lightfastness, and strong affinity for protein-based and polyamide fibers. This dye is essential for manufacturers requiring deep, consistent black shades with reliable wash and perspiration fastness. Its primary applications are in the textile and leather industries for dyeing wool, silk, nylon, and for printing inks.

Application

• Primary dyeing of wool and silk fabrics and yarns.
• Coloration of nylon (polyamide) fibers for apparel, carpets, and upholstery.
• Leather dyeing for footwear, garments, and automotive interiors.
• Used in the formulation of printing inks for textiles.
• Blending with other acid dyes to achieve specific, complex black and dark color shades.
• Potential use in the coloration of paper and specialty coatings.

Basic Information

Product Name	Acid Black 210
CAS No.	99576-15-5
Molecular Formula	C40H23N7Na4O13S4
Molecular Weight	1085.88 g/mol
Synonyms	Acid Black 210; C.I. Acid Black 210; Black 210; Acid Black WAN; Nylosan Black N-BL; Telon Black BGL; Erionyl Black BGL; Supranol Black BGL; Acid Leather Black 210; Dermacid Black 210
EINECS	Contact for details

Quality Control

Our Acid Black 210 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including color strength, shade, solubility, and fastness properties. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance metrics is provided with every shipment to guarantee it meets your specific application requirements.

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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Black powder or granules
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to standard
Moisture Content	≤ 5.0%
Water Solubility	Conforms
pH (1% Solution)	6.0 - 8.0
Fastness Properties (Typical)	Light: 5-6; Wash: 4-5; Perspiration: 4-5

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