Terephthaloyl chloride(CAS#100-20-9),nature
Monoclinic crystal or white sheet-like crystal
Melting point: 83-84 ℃
Boiling point: 259 ℃ (1.99kPa)
Smoke in humid air and decompose upon contact with water
Soluble in ethanol and organic solvents
Preparation method
P-xylene is subjected to photocatalytic chlorination to produce p-dichloromethyl benzene, which is then heated and refluxed with terephthalic acid for acylation reaction. Solid sodium carbonate is then adjusted to alkalinity, and the sodium chloride is filtered out. The liquid is then distilled under reduced pressure, and the distillate is collected at 68-75 ℃ (1.866kPa) to obtain the final product.
Obtained by the reaction of terephthalic acid and dichlorosulfoxide.
Chlorine gas is introduced in the presence of phosphorus trichloride to obtain acyl chloride.
purpose
Important organic raw materials that can be used to manufacture resins, dyes, pigments, Used for medications, and pesticides.
