Description

[[1-Hydroxy-6-[[[[5-Hydroxy-6-[(2-Methyl-4-Sulphophenyl)Azo]-7-Sulpho-2-Naphthyl]Amino]Carbonyl]Amino]-3-Sulpho-2-Naphthyl]Azo]Benzoic Acid is a high-purity, synthetic azo dye intermediate characterized by its complex poly-sulphonated naphthalene structure. This compound is engineered to deliver exceptional color strength and stability in demanding applications, making it a critical component for producing vivid and durable shades. It is primarily required by manufacturers in the textile, ink, and specialty coatings industries for the synthesis of high-performance dyes and pigments.

Application

• Textile Dyeing: A key intermediate for synthesizing reactive and acid dyes used on cotton, wool, silk, and nylon fibers.
• Ink Manufacturing: Used in the production of high-quality pigments for industrial printing inks, including packaging and security inks.
• Leather Coloring: Employed in the formulation of dyes for achieving deep, uniform colors on leather goods.
• Paper Coloring: Serves as a precursor for dyes used in specialty paper and cardboard products.
• Research & Development: Utilized in chemical research for developing new chromophores and studying azo dye chemistry.
• Specialty Coatings: Incorporated into systems requiring specific, light-fast colorants for industrial and artistic coatings.

Basic Information

Product Name	[[1-Hydroxy-6-[[[[5-Hydroxy-6-[(2-Methyl-4-Sulphophenyl)Azo]-7-Sulpho-2-Naphthyl]Amino]Carbonyl]Amino]-3-Sulpho-2-Naphthyl]Azo]Benzoic Acid
CAS No.	47897-90-5
Molecular Formula	C35H24N6O14S4
Molecular Weight	904.86 g/mol
Synonyms	Benzoic acid, 2-[[6-[[[[5-hydroxy-6-[(2-methyl-4-sulfophenyl)azo]-7-sulfo-2-naphthalenyl]amino]carbonyl]amino]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]-; C.I. Reactive Red 238; Reactive Red 238; Azo dye intermediate RR238; 1-Hydroxy-6-((5-hydroxy-6-((2-methyl-4-sulfophenyl)azo)-7-sulfo-2-naphthamido)-3-sulfo-2-naphthyl)azo)benzoic acid
EINECS	Contact for details

Quality Control

Our production of this azo dye intermediate adheres to strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications. Certificates of Analysis (COA) detailing assay, impurity profile, and physical parameters are provided with each shipment to guarantee traceability and compliance.

Storage

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

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Partially soluble, forms colloidal solution

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