Description

C.I.Acid Black 62 is a synthetic acid dye belonging to the azo dye class, identified by CAS No. 12234-51-4. It is valued for its strong affinity to protein fibers like wool, silk, and nylon, providing deep, level shades with good wet fastness properties. This dye is essential for manufacturers in the textile and leather industries seeking reliable and consistent coloration for high-quality products.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and nylon fibers to achieve deep black and navy shades.
• Leather Finishing: Used in the dyeing of leather goods, including apparel, footwear, and upholstery, for uniform color penetration.
• Paper Coloring: Employed in specialty paper production where acid-fast dyes are required.
• Ink Formulation: A component in the manufacture of certain inks for industrial marking and printing.
• Biomedical Staining: Potential use as a biological stain in laboratory settings due to its protein-binding characteristics.

Basic Information

Product Name	C.I.Acid Black 62
CAS No.	12234-51-4
Molecular Formula	C22H14N6Na2O9S2
Molecular Weight	616.49 g/mol
Synonyms	Acid Black 62; C.I. 12195; Acid Leather Black NB; Acid Black NB; Acid Black 2BN; Acid Black N-BL; Acid Black NB (C.I. 12195); 2-Naphthalenesulfonic acid, 7-[(2,4-diamino-5-methylphenyl)azo]-8-hydroxy-3,6-disulfo-, disodium salt
EINECS	235-428-4

Quality Control

Our production of C.I.Acid Black 62 adheres to stringent quality management systems to ensure batch-to-batch consistency and performance. The product is tested against key parameters including dye content, shade, solubility, and fastness properties. A Certificate of Analysis (COA) detailing purity, strength, and impurity profiles 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). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Black to dark blue powder
Identification (IR)	Conforms to standard
Assay (Dye Content)	≥ 95%
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Shade	Conforms to standard
Fastness Properties (Typical)	Light: 4-5; Wash: 4-5; Perspiration: 4

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