Description

Disodium 7-(Benzoylamino)-4-Hydroxy-3-[[3-Methyl-4-[(2-Methyl-4-Sulphonatophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonate is a high-purity, water-soluble azo dye intermediate of significant industrial importance. Its value lies in its role as a key precursor for synthesizing vibrant and stable dyes and pigments, particularly for demanding applications. 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 Azo Dyes: Serves as a crucial building block in the synthesis of high-performance acid dyes and direct dyes, especially for polyamide fibers like nylon.
• Textile Dyeing: Used to produce dyes that impart strong, wash-fast colors to wool, silk, and synthetic fabrics.
• Ink Formulation: A key component in the manufacture of inks for packaging, writing, and printing, where color intensity and stability are paramount.
• Specialty Pigments: Employed in the creation of pigments for paints, plastics, and coatings that require specific hue and durability properties.
• Leather Coloring: Used in the production of dyes for the leather tanning and finishing industry.
• Paper Coloring: Applicable in the manufacture of dyes for specialty and decorative papers.
• Biological Staining: Potential use as a precursor for histological stains in laboratory settings.
• Research & Development: Serves as a standard or reagent in chemical research focused on dye chemistry and material science.

Basic Information

Product Name	Disodium 7-(Benzoylamino)-4-Hydroxy-3-[[3-Methyl-4-[(2-Methyl-4-Sulphonatophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonate
CAS No.	5873-26-7
Molecular Formula	C31H23N5Na2O8S2
Molecular Weight	711.62 g/mol
Synonyms	Acid Red 299; C.I. 18130; Disodium 7-benzamido-4-hydroxy-3-[[4-[(2-methyl-4-sulfophenyl)azo]-3-methylphenyl]azo]-2-naphthalenesulfonate; 7-Benzamido-4-hydroxy-3-[[4-[(2-methyl-4-sulfophenyl)azo]-3-methylphenyl]azo]-2-naphthalenesulfonic acid disodium salt; Benzenesulfonic acid, 2-methyl-4-[[3-methyl-4-[[7-(benzoylamino)-4-hydroxy-3-sulfo-2-naphthalenyl]azo]phenyl]azo]-, disodium salt; Azo Rubine S; Lanasyn Red 2GL; Supranol Fast Red 3BW
EINECS	227-525-7

Quality Control

Our Disodium 7-(Benzoylamino)-4-Hydroxy-3-[[3-Methyl-4-[(2-Methyl-4-Sulphonatophenyl)Azo]Phenyl]Azo]Naphthalene-2-Sulphonate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for dye intermediate applications. Certificates of Analysis (COA) detailing batch-specific results are provided to guarantee traceability and compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. The product is light-sensitive (store away from light) and hygroscopic (moisture-sensitive); ensure containers are sealed after each use to prevent moisture absorption and degradation.

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
pH (1% Solution)	6.0 - 8.0

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