Description

Sodium 7-Amino-4-Hydroxy-3-(Phenylazo)Naphthalene-2-Sulphonate is a specialized azo dye intermediate and analytical reagent, recognized for its distinct chromophoric properties. This compound is critical for synthesizing high-value dyes and pigments, offering precise color characteristics and stability. It is primarily required by manufacturers in the dye and pigment industry, as well as research laboratories for colorimetric analysis and biochemical staining applications.

Application

• Primary Intermediate for the synthesis of acid dyes and azo pigments.
• Colorant Precursor in the production of inks, textiles, and leather dyes.
• Analytical Reagent in laboratory settings for colorimetric detection and complexometric titrations.
• Biochemical Staining agent for histological and cytological applications.
• Research & Development of novel chromophores and functional dyes.
• Quality Control standard in dye manufacturing processes.

Basic Information

Product Name	Sodium 7-Amino-4-Hydroxy-3-(Phenylazo)Naphthalene-2-Sulphonate
CAS No.	6300-24-9
Molecular Formula	C₁₆H₁₂N₃NaO₄S
Molecular Weight	365.34 g/mol
Synonyms	7-Amino-4-hydroxy-3-(phenylazo)naphthalene-2-sulfonic acid sodium salt; Acid Orange 20; C.I. 14600; Sodium 2-(7-amino-4-hydroxy-3-(phenyldiazenyl)naphthalen-1-yl)oxy-5-sulfonate; 3-(Phenylazo)-7-amino-4-hydroxynaphthalene-2-sulfonic acid sodium salt; 7-Amino-4-hydroxy-3-(phenylazo)-2-naphthalenesulfonic acid sodium salt; Tropaeolin OO sodium salt; Orange IV sodium salt
EINECS	228-560-7

Quality Control

Our Sodium 7-Amino-4-Hydroxy-3-(Phenylazo)Naphthalene-2-Sulphonate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer and industry specifications. Certificates of Analysis (COA) documenting all critical parameters are provided with every shipment.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to brownish-red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Clear solution
Residue on Ignition	≤ 0.5%

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