Description

Disodium 7-Amino-4-Hydroxy-3-[[5-Hydroxy-6-(Phenylazo)-7-Sulphonato-2-Naphthyl]Azo]Naphthalene-2-Sulphonate is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its value lies in its role as a critical precursor for synthesizing vibrant and stable dyes and pigments, particularly in the red to violet color spectrum. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries who require consistent quality and reliable supply chains for their production processes.

Application

• Primary Intermediate for Dyes & Pigments: Key building block for the synthesis of acid dyes, direct dyes, and reactive dyes used in textile coloring.
• Textile Industry: Used in dyeing processes for natural fibers like wool, silk, and nylon, as well as for paper and leather.
• Ink Manufacturing: Serves as a precursor for pigments in printing inks, including those for packaging and publications.
• Specialty Coatings: Employed in the production of colorants for paints, lacquers, and other industrial coatings.
• Research & Development: Used in chemical research for developing new chromophores and studying azo dye chemistry.
• Biological Staining: Potential application as an intermediate for histological stains and indicators in laboratory settings.

Basic Information

Product Name	Disodium 7-Amino-4-Hydroxy-3-[[5-Hydroxy-6-(Phenylazo)-7-Sulphonato-2-Naphthyl]Azo]Naphthalene-2-Sulphonate
CAS No.	6227-07-2
Molecular Formula	C26H16N4Na2O10S2
Molecular Weight	654.53 g/mol
Synonyms	Acid Red 299; C.I. 18130; Disodium 7-amino-4-hydroxy-3-[(5-hydroxy-6-(phenylazo)-7-sulphonato-2-naphthyl)azo]naphthalene-2-sulphonate; 7-Amino-4-hydroxy-3-[[5-hydroxy-6-(phenylazo)-7-sulphonato-2-naphthyl]azo]naphthalene-2-sulphonic acid disodium salt; 2-Naphthalenesulfonic acid, 7-amino-4-hydroxy-3-((5-hydroxy-6-(phenylazo)-7-sulfo-2-naphthalenyl)azo)-, disodium salt; Azo dye intermediate RED; C.I. Acid Red 299
EINECS	Contact for details

Quality Control

Our production of Disodium 7-Amino-4-Hydroxy-3-[[5-Hydroxy-6-(Phenylazo)-7-Sulphonato-2-Naphthyl]Azo]Naphthalene-2-Sulphonate adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling, to meet exacting customer specifications. Certificates of Analysis (COA) documenting identity, purity, and physical parameters are provided with every shipment.

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). Keep away from strong oxidizing agents. The material is light-sensitive (store away from light) and hygroscopic (moisture-sensitive); ensure containers are sealed after each use to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Sulfated Ash	≤ 20.0%
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.