Description

Disodium 2-[(2-Amino-5-Hydroxy-7-Sulphonato-1-Naphthyl)Azo]-5-Nitrobenzoate is a high-purity, water-soluble azo dye intermediate known for its vivid color properties and chemical stability. This compound is essential for manufacturers requiring precise and reliable chromophores for demanding technical applications. It is primarily utilized in the production of specialized dyes and pigments for the textile, ink, and advanced materials sectors.

Application

• Key intermediate for the synthesis of azo dyes and pigments used in textile coloration.
• Manufacturing of specialty inks for printing and packaging applications.
• Production of colorants for advanced materials, including plastics and coatings.
• Used in research and development of novel chromophores for analytical and diagnostic reagents.
• Potential applications in the formulation of functional dyes for non-textile industrial uses.

Basic Information

Product Name	Disodium 2-[(2-Amino-5-Hydroxy-7-Sulphonato-1-Naphthyl)Azo]-5-Nitrobenzoate
CAS No.	67875-25-6
Molecular Formula	C17H10N4Na2O8S
Molecular Weight	476.33 g/mol
Synonyms	Acid Red 337; C.I. 17210; Disodium 5-[(2-amino-5-hydroxy-7-sulfonato-1-naphthyl)azo]-2-nitrobenzoate; 2-Naphthalenesulfonic acid, 7-[(2-carboxy-4-nitrophenyl)azo]-8-amino-1-hydroxy-, disodium salt; Benzoic acid, 2-[(2-amino-5-hydroxy-7-sulfo-1-naphthalenyl)azo]-5-nitro-, disodium salt; Azo dye intermediate 67875-25-6
EINECS	Contact for details

Quality Control

Our Disodium 2-[(2-Amino-5-Hydroxy-7-Sulphonato-1-Naphthyl)Azo]-5-Nitrobenzoate is produced under a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, color strength, and performance. Certificates of Analysis (COA) detailing key specifications are available upon request 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 room temperature (15-25°C). Keep away from incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

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