Description

Acid Black 26 is a synthetic acid dye belonging to the azo dye class, identified by CAS No. 6262-07-3. It is valued for its strong affinity to protein fibers like wool and silk, providing deep, level shades with good 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.
• Paper Staining: Employed for the coloration of specialty papers and paper products.
• Ink Formulation: A colorant component in the manufacturing of inks for various printing applications.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.

Basic Information

Product Name	Acid Black 26
CAS No.	6262-07-3
Molecular Formula	C22H14N6Na2O9S2
Molecular Weight	616.49 g/mol
Synonyms	Acid Black 26; C.I. 62020; Acid Leather Black NB; Acid Leather Black S-BL; Acidol Black M-R; Amido Black 10B; Azo Leather Black S-BL; C.I. Acid Black 26; Dermina Black S-BL; Eriosin Black S-BL; Lissamine Black 12B; Naphthalene Black 12B; Sodium 4-amino-5-hydroxy-3-[(4-nitrophenyl)azo]-6-(phenylazo)naphthalene-2,7-disulfonate
EINECS	228-410-3

Quality Control

Our Acid Black 26 is produced under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against rigorous in-house specifications for critical parameters including color strength, shade, solubility, and impurity profile. A Certificate of Analysis (COA) detailing these results is provided with every shipment to guarantee compliance with your technical 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. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Black to dark blue powder
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95%
Color Strength	100 ± 3%
Moisture Content	Max. 5.0%
Water Solubility	Conforms
Ash Content	Max. 1.0%

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