Description

Disodium 3,3'-[Carbonylbis(Imino-p-Phenyleneazo)]Bis[6-Hydroxy-5-Methylbenzoate] is a high-purity, water-soluble azo dye intermediate known for its excellent chromophore properties and stability. This compound is critical for manufacturers requiring precise color development and consistent batch-to-batch performance in demanding applications. It is primarily utilized by producers of specialty dyes, pigments, and colorants for the textile, ink, and advanced material sectors.

Application

• Primary Intermediate for Azo Dyes: A key building block in the synthesis of high-performance azo dyes for textiles and leather.
• Specialty Pigment Manufacturing: Used in the production of organic pigments for inks, coatings, and plastics.
• Functional Colorants: Employed in the formulation of colorants for specialty papers and advanced polymeric materials.
• Research & Development: Serves as a reference standard and starting material in chemical R&D for novel chromogenic compounds.
• Analytical Reagent: Potential use as a staining agent or indicator in specific analytical chemistry protocols.

Basic Information

Product Name	Disodium 3,3'-[Carbonylbis(Imino-p-Phenyleneazo)]Bis[6-Hydroxy-5-Methylbenzoate]
CAS No.	66256-74-4
Molecular Formula	C30H20N6Na2O8
Molecular Weight	638.50 g/mol
Synonyms	Disodium 3,3'-[Carbonylbis(imino-p-phenyleneazo)]bis(6-hydroxy-5-methylbenzoate); Benzoic acid, 6-hydroxy-5-methyl-, 3,3'-[carbonylbis(imino-p-phenylenebisazo)]bis-, disodium salt; C.I. 27755; Azo dye intermediate 66256-74-4; Disodium salt of bis-azo dye acid; 3,3'-[Carbonylbis(imino-p-phenylenebisazo)]bis(6-hydroxy-5-methylbenzoic acid) disodium salt
EINECS	Contact for details

Quality Control

Our production of Disodium 3,3'-[Carbonylbis(Imino-p-Phenyleneazo)]Bis[6-Hydroxy-5-Methylbenzoate] adheres to stringent quality management protocols to ensure product integrity and traceability. Each batch is analyzed to confirm identity, purity, and conformance to agreed specifications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from incompatible materials. The product is light-sensitive and should be stored away from direct light exposure.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Residue on Ignition (Sulfated Ash)	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear solution

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