Description

5-[(4-Amino-5-Methoxy-o-Tolyl)Azo]-3-Sulphosalicylic Acid, Sodium Salt is a specialized azo dye intermediate and analytical reagent. This compound is valued for its precise chromophoric properties and its role in synthesizing complex colorants and functional chemicals. It is primarily required by manufacturers in the dye and pigment industry, as well as by research laboratories for analytical and diagnostic applications.

Application

• Dye and Pigment Synthesis: A key intermediate for producing high-value azo dyes and pigments used in textiles, inks, and coatings.
• Analytical Chemistry: Employed as a chromogenic reagent or indicator in complexometric titrations and spectrophotometric analysis.
• Biological Staining: Potential use in histological stains and diagnostic kits due to its specific color-forming reactions.
• Chemical Research: Serves as a building block in organic synthesis for novel compounds with specialized optical properties.
• Industrial Colorants: Used in the formulation of specialized colorants for plastics,纸张, and other industrial materials.

Basic Information

Item	Detail
Product Name	5-[(4-Amino-5-Methoxy-o-Tolyl)Azo]-3-Sulphosalicylic Acid, Sodium Salt
CAS No.	85720-91-8
Molecular Formula	C15H13N3NaO6S
Molecular Weight	386.33 g/mol
Synonyms	5-[(4-Amino-5-methoxy-2-methylphenyl)azo]-3-sulfosalicylic acid sodium salt; 3-Sulfosalicylic acid, 5-[(4-amino-5-methoxy-o-tolyl)azo]-, sodium salt; Sodium 5-[(4-amino-5-methoxy-2-methylphenyl)diazenyl]-2-hydroxy-3-sulfobenzoate; C.I. 37155; Acid Yellow 219 (sodium salt); Azo dye intermediate YA; Light-sensitive azo compound
EINECS	Contact for details

Quality Control

Our production of 5-[(4-Amino-5-Methoxy-o-Tolyl)Azo]-3-Sulphosalicylic Acid, Sodium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including identity confirmation, purity assay, and impurity profiling, to ensure consistency and reliability. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory needs.

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	Orange to brownish-red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 1.0%; Total impurities ≤ 3.0%

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