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

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

Uses

Used in Pharmaceutical Industry:
2,3,5,6-Tetrachloroterephthaloyl chloride is used as a chemical intermediate for the synthesis of various pharmaceutical compounds, leveraging its reactivity to form new molecular structures with potential therapeutic applications.
Used in Polymer Industry:
2,3,5,6-Tetrachloroterephthaloyl chloride is used as a monomer in the production of aromatic polyamides and polyimides, which are high-performance polymers known for their exceptional mechanical strength and heat resistance.
Used in the Production of High-Performance Polymers:
In the polymer industry, 2,3,5,6-Tetrachloroterephthaloyl chloride is used as a key component in the synthesis of liquid crystal polymers and aramid fibers. These materials are valued for their superior properties, such as high strength, heat resistance, and dimensional stability, making them suitable for applications in aerospace, automotive, and electronics industries.
Used in Research and Development:
2,3,5,6-Tetrachloroterephthaloyl chloride is utilized in research laboratories for the development of new polymers and materials with enhanced properties. Its reactivity allows for the exploration of novel chemical reactions and the creation of innovative polymer structures.

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

• 1861-32-1 Dacthal 
• 2136-79-0 Dactal 
• 1786-85-2 2,3,5,6-tetrachloro-1,4-benzenecarboxamide 
• 86633-42-3 N-(4-chlorocarbonyl)-2,3,5,6-tetrachlorobenzoyl-4-picolinium chloride 
• 38233-11-3 dibutyl 2,3,5,6-tetrachloroterephthalate 
• 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 
• 98235-77-9 C₈ClF₅O₂ 
• 950-70-9 2,3,5,6-tetrafluoroterephthalic acid difluoride 
• 940940-15-8 dimethyl 2,3,5-trifluoro-6-chloroterephthalate 
• 940951-33-7 dimethyl 2-fluoro-3,5,6-trichloroterephthalate 
• 727-55-9 dimethyl 2,3,5,6-tetrafluoroterephthalate 
• 652-36-8 2,3,5,6-tetrafluoroterephthalic acid 

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%.

Tetranuclear copper complex, preparation method and application of tetranuclear copper complex in gas-phase amination catalysis of tetrahydrofuran

The invention discloses a tetranuclear copper complex, a preparation method and application of the tetranuclear copper complex in gas-phase amination catalysis of tetrahydrofuran, and relates to the field of pyrrolidine catalysts.The chemical formula of the tetranuclear copper complex is [Cu(L)(ClO4)(H2O)](dioxane)1.5, wherein L represents a 2,3,5,6-tetrachloro-1,4-di(imidazole-1-carbonyl)benzene ligand, ClO4 represents a nitrate anion, and dioxane represents 1,4-dioxane.The copper complex with a tetranuclear cage-shaped structure is obtained by adopting copperperchlorate hydrate and the organic ligand 2,3,5,6-tetrachloro-1,4-di(imidazole-1-carbonyl)benzene in blend solvent of 1,4-dioxane and methyl alcohol under the closed condition through a thermal reaction.The tetranuclear copper complex is applied to ammoniation of tetrahydrofuran and ammonia to prepare pyrrolidine.Accordingly, the technological process is simple; a catalyst is convenient to prepare, and the reproducibility is good; the conversion rate of tetrahydrofuran reaches 83%, and the selectivity of pyrrolidine reaches 95%.

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.

A new route to 2,3,5,6-tetrafluoroterephthal aldehyde and its chemical transformation

The title compound was prepared from commercial available and cheaper starting material terephthalolyl chloride by six-step reaction sequence in total 40% yield. Its chemical transformations were also studied.