Cloc is terephthaloyl chloride
National standard number: 81125
CAS number: 100-20-9 Simplified structural formula
EINECS number: 202-829-5[1]
Chinese name: terephthaloyl chloride[2]
English name: terephthaloyl chloride; 1,4-benzenedicarbonyl chloride
p>Alias: Terephthaloyl dichloride
Molecular formula: C8H4Cl2O2; (ClCO)2C6H4
Molecular weight: 203.02
Appearance and properties White solid
Vapor pressure: 0.01kPa/38℃ Flash point: 180℃
Melting point; 79-81℃ Boiling point: 266℃ Solubility decomposes when exposed to water
Density : Relative density (air = 1) 7.0 Stable stability
Hazard mark: 20 (acid corrosive)
It is made of liquid crystal fiber PPTA (polyterephthalamide) The main material of amine) is called aramid 1414 in China.
PPTA uses terephthaloyl chloride and p-phenylenediamine as monomers, a mixture of hexamethylphosphoramide (HTP) and N-methylpyrrolidone (NMP) as the solvent, and performs low-temperature solution polycondensation made.