Description

5-[(4-Anilino-5-Sulphonaphthyl)Azo]-4-Hydroxynaphthalene-2,7-Disulphonic Acid is a high-purity, synthetic azo dye intermediate known for its complex aromatic structure. This compound is valued for its ability to impart specific color properties and functional characteristics in advanced dye synthesis. It is primarily required by manufacturers in the specialty chemicals sector for producing high-performance dyes and pigments used in textiles, inks, and analytical reagents.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of complex, high-value azo dyes for textiles and leather.
• Specialty Pigment Manufacturing: Used in the production of pigments for inks, coatings, and plastics where specific color fastness and stability are required.
• Analytical Chemistry Reagent: Employed as a chromogenic agent or indicator in certain spectrophotometric and complexometric analytical methods.
• Research & Development: Utilized in chemical research for studying azo coupling reactions and developing new colorant molecules.
• Functional Dye Synthesis: A precursor for dyes with specialized applications, such as those used in optical data storage or liquid crystal displays.

Basic Information

Product Name	5-[(4-Anilino-5-Sulphonaphthyl)Azo]-4-Hydroxynaphthalene-2,7-Disulphonic Acid
CAS No.	7488-76-8
Molecular Formula	C26H18N4O10S3
Molecular Weight	642.63 g/mol
Synonyms	Acid Black 107; C.I. 15711; 5-[(4-Anilino-5-sulfo-1-naphthyl)azo]-4-hydroxy-2,7-naphthalenedisulfonic acid; 4-Hydroxy-5-[(4-(phenylamino)-5-sulfo-1-naphthyl)azo]-2,7-naphthalenedisulfonic acid; 1-Naphthalenesulfonic acid, 5-[(4-anilino-5-sulfo-1-naphthalenyl)azo]-4-hydroxy-2,7-disulfo-; C.I. Acid Black 107; Mordant Black 17 (related class).
EINECS	Contact for details

Quality Control

Our production of 5-[(4-Anilino-5-Sulphonaphthyl)Azo]-4-Hydroxynaphthalene-2,7-Disulphonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. Each lot is analyzed using advanced techniques like HPLC and spectrophotometry to verify identity and assay. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory compliance needs.

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 (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Dark brown to black powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0% (typical)
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Soluble

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