Description

Disodium 2'-[4-[[2,4-Dihydroxy-5-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]Phenyl]-6-Methyl[2,6'-Bibenzothiazole]-7-Sulphonate CAS NO 83027-32-1 is a high-purity, synthetic organic dye belonging to the benzothiazole azo class, valued for its strong and stable color properties. This compound is engineered to deliver consistent performance and excellent fastness in demanding industrial applications. It is primarily utilized by manufacturers in the textile, leather, and specialty ink industries seeking reliable and vibrant coloration.

Application

• Textile Dyeing: For coloring natural and synthetic fibers, particularly where high wash and light fastness are required.
• Leather Finishing: Used in the dyeing process for leather goods to achieve deep, uniform shades.
• Specialty Inks: A key component in the formulation of high-performance inks for industrial printing and packaging.
• Paper Coloring: Employed in the production of specialty colored papers and boards.
• Biological Staining: Potential use as a histological stain in laboratory settings due to its specific chromogenic properties.
• Research & Development: Serves as a chemical intermediate or reference standard in organic synthesis and analytical chemistry research.

Basic Information

Product Name	Disodium 2'-[4-[[2,4-Dihydroxy-5-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]Phenyl]-6-Methyl[2,6'-Bibenzothiazole]-7-Sulphonate
CAS No.	83027-32-1
Molecular Formula	C34H22N6Na2O10S3
Molecular Weight	824.80 g/mol
Synonyms	Acid Black 234; C.I. 31795; Disodium 6-methyl-2'-[4-[(2,4-dihydroxy-5-[(4-sulfophenyl)azo]phenyl)azo]phenyl]-2,6'-bibenzothiazole-7-sulfonate; 2,6'-Bibenzothiazole-7-sulfonic acid, 2'-[4-[[2,4-dihydroxy-5-[(4-sulfophenyl)azo]phenyl]azo]phenyl]-6-methyl-, disodium salt; Leather Black PV; Acid Leather Black S-RB; Azo Benzothiazole Dye
EINECS	Contact for details

Quality Control

Our Disodium 2'-[4-[[2,4-Dihydroxy-5-[(4-Sulphonatophenyl)Azo]Phenyl]Azo]Phenyl]-6-Methyl[2,6'-Bibenzothiazole]-7-Sulphonate is produced under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot is analyzed against stringent in-house specifications, which include tests for identity, assay, and impurity profiles. Certificates of Analysis (COA) documenting these results are provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Dark blue to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
pH (1% Solution)	6.0 - 8.0

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