Description

C.I. Acid Black 83 is a synthetic, high-strength acid dye belonging to the azo chemical class. This dye is valued for its deep, intense black shade and excellent build-up properties on protein fibers like wool, silk, and nylon. It is a critical component for textile manufacturers, leather tanneries, and paper producers requiring durable, wash-fast coloration. Our supply of C.I. Acid Black 83 CAS NO 61901-06-2 ensures consistent quality and performance for industrial dyeing and printing processes.

Application

• Primary dyeing and printing of wool and silk textiles.
• Coloration of nylon fibers for apparel, carpets, and upholstery.
• Leather dyeing for footwear, garments, and accessories.
• Paper staining and specialty paper production.
• Ink formulation for specialized marking and writing instruments.
• Biological staining applications in microscopy and histology.
• As a colorant for anodized aluminum and other specialty surfaces.

Basic Information

Product Name	C.I. Acid Black 83
CAS No.	61901-06-2
Molecular Formula	C22H14N6Na2O9S2
Molecular Weight	616.49 g/mol
Synonyms	Acid Black 83; C.I. 63685; Acid Leather Black NB; Naphthalene Black 12B; Acidol Black M-R; Amido Black 10B (related); Azo Black; Acid Fast Black; Lissamine Black; Supranol Fast Black B
EINECS	263-310-6

Quality Control

Our production of C.I. Acid Black 83 adheres to stringent quality protocols to ensure batch-to-batch consistency in shade, strength, and solubility. Key parameters such as dye content, shade, and fastness properties are rigorously tested against industry standards. Certificates of Analysis (COA) detailing purity, heavy metal content, and other critical specifications are provided with every shipment to guarantee compliance with your manufacturing 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). Keep away from incompatible materials and sources of ignition. The product is light-sensitive and should be stored away from direct light exposure to maintain stability.

Specification

Item	Specification
Appearance	Black powder or granules
Identification (IR)	Conforms to standard
Dye Content	≥ 95%
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade	Conforms to standard
Fastness Properties (Wash, Light)	Standard grade
Heavy Metals (as Pb)	≤ 50 ppm

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