Description

Trisodium 4-[[2,4-Dihydroxy-3-[[4-(6-Methyl-7-Sulphonato[2,6'-Bibenzothiazol]-2'-Yl)Phenyl]Azo]Phenyl]Azo]-5-Hydroxynaphthalene-2,7-Disulphonate is a high-purity, water-soluble azo dye intermediate known for its complex molecular structure and excellent chromophoric properties. This compound matters for its role in synthesizing specialized dyes and pigments that offer superior color fastness, brightness, and stability under demanding conditions. It is primarily needed by manufacturers in the textile, ink, and specialty coatings industries seeking to produce high-performance colorants.

Application

• As a key chromophore intermediate in the synthesis of high-grade reactive and direct dyes for textiles.
• In the production of specialized inks for digital printing and security printing applications requiring precise color properties.
• For manufacturing pigments and colorants used in industrial coatings and plastics.
• As a research chemical in the development of new organic dyes and functional materials in academic and industrial R&D labs.
• Potential use in the formulation of biological stains and indicators for analytical chemistry.

Basic Information

Product Name	Trisodium 4-[[2,4-Dihydroxy-3-[[4-(6-Methyl-7-Sulphonato[2,6'-Bibenzothiazol]-2'-Yl)Phenyl]Azo]Phenyl]Azo]-5-Hydroxynaphthalene-2,7-Disulphonate
CAS No.	93940-05-7
Molecular Formula	C34H19N5Na3O13S4
Molecular Weight	928.77 g/mol (approx.)
Synonyms	Acid Black 234; C.I. 31795; Trisodium 4-[(2,4-dihydroxy-3-{[4-(6-methyl-7-sulphonato[2,6'-bibenzothiazol]-2'-yl)phenyl]azo}phenyl)azo]-5-hydroxynaphthalene-2,7-disulphonate; 2,7-Naphthalenedisulfonic acid, 4-[[2,4-dihydroxy-3-[[4-(6-methyl-7-sulphonato[2,6'-bibenzothiazol]-2'-yl)phenyl]azo]phenyl]azo]-5-hydroxy-, trisodium salt; Reactive Black 5 related intermediate; Azo dye intermediate 93940-05-7; Light-sensitive azo compound
EINECS	Contact for details

Quality Control

Our Trisodium 4-[[2,4-Dihydroxy-3-[[4-(6-Methyl-7-Sulphonato[2,6'-Bibenzothiazol]-2'-Yl)Phenyl]Azo]Phenyl]Azo]-5-Hydroxynaphthalene-2,7-Disulphonate is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity, composition, and performance suitable for demanding industrial synthesis. Certificates of Analysis (COA) detailing key parameters are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This material is light-sensitive (store away from light) and hygroscopic (moisture-sensitive); prolonged exposure to light, heat, or high humidity should be avoided to maintain stability.

Specification

Item	Specification
Appearance	Dark powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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