719-32-4

Basic information

• Product Name: 2,3,5,6-Tetrachloroterephthaloyl chloride
• Synonyms: TETRACHLORO TEREPHTHALOYL CHLORIDE;2,3,5,6-TETRACHLOROTEREPHTHALOYL CHLORIDE;2,3,5,6-TETRACHLOROTEREPHTHALOYL DICHLORIDE;2,3,5,6-tetrachloro-4-benzenedicarbonyldichloride;perchloroterephthaloylchloride;tetrachloroterephthalicdichloride;tetrachloro-terephthaloylchlorid;tetrachloroterephthaloyldichloride
• CAS NO: 719-32-4
• Molecular Formula: C₈Cl₆O₂
• Molecular Weight: 340.8
• EINECS: 211-947-6
• Product Categories: Benzene derivates
• Mol File: 719-32-4.mol
• Article Data: 4

Chemical Properties

• Melting Point: 144-145 °C
• Boiling Point: 382.8°C at 760 mmHg
• Flash Point: 161.9°C
• Appearance: /
• Density: 1.793g/cm³
• Vapor Pressure: 4.6E-06mmHg at 25°C
• Refractive Index: 1.614
• Storage Temp.: 2-8°C
• CAS DataBase Reference: 2,3,5,6-Tetrachloroterephthaloyl chloride(CAS DataBase Reference)
• NIST Chemistry Reference: 2,3,5,6-Tetrachloroterephthaloyl chloride(719-32-4)
• EPA Substance Registry System: 2,3,5,6-Tetrachloroterephthaloyl chloride(719-32-4)

Safety Data

• Hazardous Substances Data: 719-32-4(Hazardous Substances Data)

Usage

General Description

2,3,5,6-Tetrachloroterephthaloyl chloride, also known as tetrachloroterephthaloyl chloride, is a chemical compound primarily used in the pharmaceutical and polymer industries. It is a derivative of terephthalic acid and is widely used in the synthesis of aromatic polyamides and polyimides. 2,3,5,6-Tetrachloroterephthaloyl chloride is a key building block in the production of high-performance polymers, such as liquid crystal polymers and aramid fibers, which are known for their exceptional mechanical strength and heat resistance. 2,3,5,6-Tetrachloroterephthaloyl chloride is a highly reactive compound and must be handled with care due to its potential for causing skin and eye irritation. It is typically used in controlled laboratory and industrial settings.

InChI:InChI=1/C8Cl6O2/c9-3-1(7(13)15)4(10)6(12)2(5(3)11)8(14)16

Upstream product

• 100-20-9 terephthaloyl chloride 
• 7719-09-7 thionyl chloride 
• 2136-79-0 Dactal 

Downstream Products

• 86633-42-3 N-(4-chlorocarbonyl)-2,3,5,6-tetrachlorobenzoyl-4-picolinium chloride 
• 60321-71-3 bis-(3,4-dichlorophenyl) 2,3,5,6-tetrachloroterephthalate 
• 122622-81-5 1,4-C₆Cl₄(Mn(CO)5)H 
• 122622-80-4 1,4-C₆Cl₄(COFp)H 
• 652-36-8 2,3,5,6-tetrafluoroterephthalic acid 
• 940940-15-8 dimethyl 2,3,5-trifluoro-6-chloroterephthalate 
• 727-55-9 dimethyl 2,3,5,6-tetrafluoroterephthalate 
• 940951-33-7 dimethyl 2-fluoro-3,5,6-trichloroterephthalate 
• 1861-32-1 Dacthal 
• 98235-77-9 C₈ClF₅O₂ 
• 950-70-9 2,3,5,6-tetrafluoroterephthalic acid difluoride 
• 940940-17-0 C₁₀H₆Cl₂F₂O₄ 
• 940940-16-9 C₁₀H₆Cl₂F₂O₄ 
• 940940-18-1 C₁₀H₆Cl₂F₂O₄ 

Relevant articles and documents

Synthesis and characterization of novel organosoluble polychloro substituted aromatic poly(ether ketone)s

A novel monomer of tetrachloroterephthaloyl chloride (TCTPC) was prepared by the chlorination of terephthaloyl chloride catalyzed by ferric chloride at 175-180°C for 10 h, and confirmed by FTIR, MS and elemental analysis. Aseries of new polychloro substituted poly(aryl ether ketone)s with inherent viscosities of 0.58-0.65 dL/g have been prepared from TCTPC with aromatic ether monomers by electrophilic Friedel-Crafts acylation in the presence of DMF with anhydrous AlCl3 as a catalyst in 1,2-dichloroethane. Glass-transition temperatures of these polychlorinated polymers ranged from 267 to 28°C by DSC. The degradation temperature at 5% weight loss by TGAin nitrogen for these polymers ranged from 486 to 534°C, and the char yields at 700°C were 54-65%. The polymers having a weight-average molecular weight in the range of 65,900-79,300 are all amorphous and readily soluble in polar solvents such as DMF, DMSO and NMP at room temperature. All the polymers formed transparent, strong, and flexible films, with tensile strengths of 86.1-99.7MPa, Young'smoduli of 2.32-3.35 GPa, and elongations at break of 10-15%.

PROCESS FOR PRODUCING PHTHALIC ACID COMPOUND INCLUDING CHLORINATED AROMATIC RING

Provided is a process for producing a phthalic acid compound whose aromatic ring has been chlorinated, the process reacting a phthalic acid compound and chlorine in a mixture of chlorosulfonic acid and thionyl chloride in the presence of an iodine compound.