Description

1,3,7,8-Tetrachlorodiphenyleneoxide is a halogenated aromatic ether compound of significant interest in advanced chemical synthesis and materials science. This specialty chemical serves as a critical intermediate for the development of high-performance polymers, flame retardants, and specialized agrochemicals. It is primarily utilized by research institutions and industrial manufacturers in the polymer, electronics, and fine chemical sectors seeking to incorporate thermally stable and halogenated structural motifs into their products.

Application

• Key intermediate in the synthesis of high-temperature resistant polymers and engineering plastics.
• Precursor for advanced flame retardant additives used in electronics and construction materials.
• Building block for specialized agrochemicals and pharmaceutical active ingredients.
• Research chemical for developing novel organic electronic materials and ligands.
• Used in the preparation of dyes, pigments, and other functional colorants.
• Intermediate in cross-coupling reactions for creating complex aromatic architectures.

Basic Information

Product Name	1,3,7,8-Tetrachlorodiphenyleneoxide
CAS No.	57117-35-8
Molecular Formula	C12H4Cl4O
Molecular Weight	307.97 g/mol
Synonyms	1,3,7,8-Tetrachlorodibenzo[b,e][1,4]dioxin; Tetrachlorodiphenylene Oxide; 1,3,7,8-Tetrachlorodibenzo-p-dioxin (isomer); Dibenzo[b,e][1,4]dioxin, 1,3,7,8-tetrachloro-; NSC 89294; 2,3,7,8-Tetrachlorodibenzodioxin isomer; TCDD isomer (1,3,7,8-)
EINECS	Contact for details

Quality Control

Our 1,3,7,8-Tetrachlorodiphenyleneoxide is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including HPLC, GC-MS, and NMR to verify identity and purity. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance and regulatory requirements.

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, sparks, and open flame. The compound is light-sensitive and should be stored away from light to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
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.