Description

1,4,5,8-Tetrachloroanthraquinone is a high-purity, halogenated anthraquinone derivative serving as a critical intermediate in advanced chemical synthesis. Its value lies in its role as a precise molecular building block for creating complex dyes, pigments, and functional organic materials. This compound is essential for manufacturers and R&D laboratories in the dye, pigment, pharmaceutical, and specialty chemical industries seeking reliable, high-quality raw materials.

Application

• Key Intermediate for Vat Dyes and Pigments: Primarily used in the synthesis of high-performance anthraquinone-based vat dyes, which are valued for their excellent color fastness and stability.
• Pharmaceutical Intermediate: Serves as a precursor in the synthesis of certain active pharmaceutical ingredients (APIs) and other bioactive molecules.
• Organic Synthesis Building Block: Utilized in research and production for constructing complex polycyclic aromatic systems and functional organic compounds.
• Specialty Chemical Manufacturing: Employed in the production of photoactive materials, optical brighteners, and other advanced functional chemicals.
• Laboratory Reagent: Used as a standard or reagent in analytical chemistry and materials science research.

Basic Information

Product Name	1,4,5,8-Tetrachloroanthraquinone
CAS No.	81-58-3
Molecular Formula	C14H4Cl4O2
Molecular Weight	336.00 g/mol
Synonyms	1,4,5,8-Tetrachloro-9,10-anthracenedione; 1,4,5,8-Tetrachloro-9,10-anthraquinone; Tetrachloroanthraquinone; C.I. 59105; C.I. Vat Yellow 20; Vat Yellow 20; 81-58-3; 9,10-Anthracenedione, 1,4,5,8-tetrachloro-
EINECS	201-364-6

Quality Control

Our 1,4,5,8-Tetrachloroanthraquinone is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting standards for industrial and research applications. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Appearance	Yellow to light brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	≥ 300 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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