Description

3-(2,4-Dihydroxyphenylazo)-4-Hydroxybenzenesulphonic Acid is a specialized azo dye intermediate and analytical reagent. This compound is valued for its ability to form stable, colored complexes with various metal ions, making it a critical component in specific chemical detection and synthesis processes. It is primarily needed by manufacturers in the dye and pigment industry, as well as by laboratories for analytical chemistry applications.

Application

• Key intermediate in the synthesis of azo dyes and pigments for textiles and inks.
• Used as a chromogenic reagent in analytical chemistry for the spectrophotometric determination of metal ions.
• Potential use in the formulation of specialized indicator solutions for pH and complexometric titrations.
• Employed in research and development for creating novel functional dyes with specific light-absorption properties.
• May serve as a starting material for photoactive compounds in niche industrial applications.

Basic Information

Product Name	3-(2,4-Dihydroxyphenylazo)-4-Hydroxybenzenesulphonic Acid
CAS No.	2918-80-1
Molecular Formula	C12H10N2O6S
Molecular Weight	310.28 g/mol
Synonyms	3-[(2,4-Dihydroxyphenyl)azo]-4-hydroxybenzenesulfonic acid; Mordant Orange 6; C.I. 14270; Acid Orange 6; 4-Hydroxy-3-[(2,4-dihydroxyphenyl)azo]benzenesulfonic acid; Benzenesulfonic acid, 4-hydroxy-3-[(2,4-dihydroxyphenyl)azo]-; 3-(2,4-Dihydroxyphenylazo)-4-hydroxybenzenesulfonic acid
EINECS	220-861-1

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Every batch is analyzed to confirm identity, purity, and consistency. Certificates of Analysis (COA) detailing specific test results are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed when not in use to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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