Description

2-[[8-[(4-Aminobenzoyl)Amino]-1-Hydroxy-3,6-Disulpho-2-Naphthyl]Azo]Naphthalene-1,5-Disulphonic Acid is a high-purity, water-soluble azo dye intermediate characterized by its complex poly-sulfonated naphthalene structure. This compound matters for its role as a critical precursor in synthesizing specialized, high-value dyes and pigments that require excellent water solubility and specific color properties. It is primarily needed by manufacturers in the textile, ink, and specialty chemical industries for producing vibrant, wash-fast colors.

Application

• Textile Dye Intermediate: A key building block for synthesizing reactive and direct dyes for cotton, wool, and nylon, offering enhanced color strength and fastness.
• Inkjet Ink Pigment Synthesis: Used in the production of advanced colorants for high-quality photographic and commercial inkjet printing inks.
• Specialty Pigment Manufacturing: Serves as a precursor for creating complex, sulfonated azo pigments used in coatings and plastics where dispersion and stability are critical.
• Biological Staining Agent Precursor: Utilized in the synthesis of certain histological stains and indicators for laboratory and diagnostic applications.
• Paper Coloring Agent: Employed in the manufacture of dyes for high-grade paper and cardboard products.
• Research & Development: Used in chemical research for developing new chromophores and studying structure-property relationships in dye chemistry.

Basic Information

Product Name	2-[[8-[(4-Aminobenzoyl)Amino]-1-Hydroxy-3,6-Disulpho-2-Naphthyl]Azo]Naphthalene-1,5-Disulphonic Acid
CAS No.	69293-65-8
Molecular Formula	C27H19N4O12S4
Molecular Weight	719.67 g/mol
Synonyms	Acid Black 210; C.I. 300310; 2-[[8-[(4-Aminobenzoyl)amino]-1-hydroxy-3,6-disulfo-2-naphthyl]azo]-1,5-naphthalenedisulfonic acid; 1,5-Naphthalenedisulfonic acid, 2-[[8-[(4-aminobenzoyl)amino]-1-hydroxy-3,6-disulfo-2-naphthyl]azo]-; Benzenesulfonic acid, 4-amino-, coupled with diazotized 8-[(4-aminobenzoyl)amino]-1-hydroxy-3,6-disulfo-2-naphthylamine; Azo dye intermediate 69293-65-8
EINECS	Contact for details

Quality Control

Our production of 2-[[8-[(4-Aminobenzoyl)Amino]-1-Hydroxy-3,6-Disulpho-2-Naphthyl]Azo]Naphthalene-1,5-Disulphonic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistent performance and specification compliance. Comprehensive Certificates of Analysis (COA) detailing purity, impurity profile, and physical characteristics are provided to guarantee traceability and batch-to-batch reliability for your manufacturing processes.

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 nature, the container must be kept tightly sealed after each use to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Sulfated Ash	≤ 1.0%
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.