Description

1,2-Dihydroxyanthraquinone-3-Sulfonic Acid is a sulfonated derivative of anthraquinone, characterized by its functional hydroxyl and sulfonic acid groups. This compound is valued as a versatile chemical intermediate and a key precursor for the synthesis of dyes, pigments, and functional materials. It is primarily needed by manufacturers in the dye and textile industries, as well as by research and development laboratories working on advanced organic synthesis and specialty chemicals.

Application

• Intermediate for the synthesis of acid dyes and reactive dyes for textiles.
• Key precursor in the production of anthraquinone-based pigments.
• Used in the manufacture of colorants for inks and coatings.
• Acts as a starting material for specialty chemicals and fine chemical synthesis.
• Potential use as a catalyst or ligand in certain organic reactions.
• Employed in research for developing novel functional dyes and photochemicals.

Basic Information

Product Name	1,2-Dihydroxyanthraquinone-3-Sulfonic Acid
CAS No.	27613-78-1
Molecular Formula	C₁₄H₈O₇S
Molecular Weight	320.27 g/mol
Synonyms	Alizarin-3-Sulfonic Acid; 1,2-Dihydroxy-9,10-anthraquinone-3-sulfonic acid; Alizarin Red S (Parent compound for salt forms); Alizarinsulfonic Acid; 3-Sulfoalizarin; Mordant Red 3 (related dye class); 9,10-Anthracenedione, 1,2-dihydroxy-3-sulfo-; CI 58005
EINECS	248-560-1

Quality Control

Our 1,2-Dihydroxyanthraquinone-3-Sulfonic Acid is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing key parameters such as assay, impurity profile, and physical characteristics 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 after opening to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
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.