Terephthalic acid dichloride

Structural formula
General
Surname	Terephthalic acid dichloride
other names	TCL
Molecular formula	C 8 H 4 Cl 2 O 2
External identifiers / databases
CAS number 100-20-9 EC number 202-829-5 ECHA InfoCard 100.002.572 PubChem 7488 Wikidata Q7702072
properties
Molar mass	203.02 g mol −1
Physical state	firmly
Melting point	81.5-83 ° C
boiling point	265 ° C
Vapor pressure	3.93 Pa (25 ° C)
solubility	decomposes in water
safety instructions
GHS labeling of hazardous substances danger H and P phrases H: 331-314 P: 261-280-303 + 361 + 353-304 + 340-305 + 351 + 338-310
Toxicological data	2500 mg kg −1 ( LD 50 ,  rat ,  oral ) 3160 mg kg −1 ( LD 50 ,  rabbit ,  transdermal )
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Terephthalic acid dichloride is a chemical compound and the acid chloride of terephthalic acid .

Extraction and presentation

Terephthalic acid, by chlorination of dimethyl terephthalate are obtained.

use

It is one of the monomers in the manufacture of aramids ( Kevlar ) and polybenzoxazoles .

Manufacture of Kevlar from terephthalic acid dichloride and p -phenylenediamine

Individual evidence

1. ↑ ^{a b c d e f} data sheet terephthalic acid dichloride (PDF) from Merck , accessed on March 22, 2014.
2. ↑ ^{a b} Entry on terephthaloyl dichloride in the GESTIS substance database of the IFA , accessed on January 10, 2017(JavaScript required) .
3. ↑ Patent EP0095698 : Process for the production of terephthalic acid and isophthalic acid dichloride. Registered on May 24, 1983 , published on September 4, 1985 , applicant: Bayer AG , inventor: Walter Böckmann, Friedrich Brühne, Karl-August Lipper. ‌