Description

2-Chloro-1,4-Dihydroxyanthraquinone is a halogenated derivative of anthraquinone, serving as a key chromophoric intermediate in the synthesis of high-value dyes and pigments. Its molecular structure provides excellent lightfastness and thermal stability, making it indispensable for creating vivid and durable colors. This compound is primarily sought after by manufacturers in the dye and pigment industries, as well as by research institutions developing advanced functional materials.

Application

• Dye Intermediate: A crucial precursor for the synthesis of vat dyes, disperse dyes, and solvent dyes, imparting shades of red, violet, and blue.
• Pigment Manufacturing: Used in the production of high-performance organic pigments for plastics, coatings, and inks, valued for their color strength and stability.
• Liquid Crystal Displays (LCDs): Serves as a dichroic dye intermediate for color filters in display technologies.
• Research & Development: Employed in academic and industrial R&D for synthesizing novel quinone-based compounds and studying electron-transfer processes.
• Specialty Chemicals: A building block for advanced materials, including photoconductive agents and chemical sensors.

Basic Information

Product Name	2-Chloro-1,4-Dihydroxyanthraquinone
CAS No.	81-53-8
Molecular Formula	C14H7ClO4
Molecular Weight	274.66 g/mol
Synonyms	2-Chloro-1,4-dihydroxy-9,10-anthracenedione; 2-Chloro-1,4-dihydroxyanthra-9,10-quinone; 1,4-Dihydroxy-2-chloroanthraquinone; C.I. 58055; Quinizarin Green SS; Solvent Green 3; C.I. Solvent Green 3; 2-Chloroquinizarin
EINECS	201-357-5

Quality Control

Our 2-Chloro-1,4-Dihydroxyanthraquinone is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via FT-IR and melting point determination, to ensure it meets precise customer specifications. Certificates of Analysis (COA) documenting all test results are provided with every shipment.

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). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided.

Specification

Item	Specification
Appearance	Dark green to brown crystalline powder
Identification (IR)	Conforms to structure
Melting Point	208 - 212 °C
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.2%
Heavy Metals (as Pb)	≤ 20 ppm

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