Dichloroacetic acid, tseem hu ua dichloroacetic acid, yog cov kua tsis muaj xim nrog ntxhiab tsw qab. Nws qhov hnyav molecular yog 128.94, thiab nws qhov ceev yog 1.5634. Dichloroacetic acid muaj ob daim ntawv crystalline nrog cov ntsiab lus yaj ntawm 9.7 ℃ thiab -4 ℃, feem. Nws lub ntsiab lus kub yog 194 ℃, Chemicalbook 102 ℃ (2.666 × 10³ Pa), thiab 91–92 ℃ (1.600 × 10³ Pa). Nws cov ntsuas refractive yog 1.4659. Nws yog soluble hauv dej (8.63% ntawm 20 ℃), ethanol, methanol, diethyl ether, acetone, chloroform, thiab benzene.

Dichloroacetic acid yog ib qho kua qaub muaj zog dua li chloroacetic acid, nrog rau qhov kev sib cais tas mus li K = 5 × 10⁻². Nws cov khoom siv tshuaj lom neeg zoo ib yam li chloroacetic acid. Ob lub chlorine atoms hauv lub molecule dichloroacetic acid tuaj yeem hloov pauv tau. Nws reacts nrog phenol los ua diphenoxyacetic acid (Chemicaloacetic acid); thiab nrog hydroxylamine los ua isonitroacetic acid, thiab lwm yam. Nws kuj tseem tuaj yeem dhau los ntawm esterification reactions, reacts nrog ethanol los muab ethyl dichloroacetate. Dichloroacetic acid yog flammable thiab corrosive; nws cov pa yog ib qho khaus khaus rau daim tawv nqaij thiab qhov muag.

Siv: Siv ua ib qho intermediate hauv tshuaj tua kab thiab tshuaj.

Cov Txheej Txheem Tsim Khoom: 1. Txoj Kev Rov Qab Tau Acetic Acid Chlorination Niam Liquor: Chlorination ntawm acetic acid ua rau muaj chloroacetic acid niam cawv. Cov niam cawv no dhau los ntawm chlorination nyob rau hauv sulfur catalysis, ua raws li distillation kom tau txais dichloroacetic acid. 2. Txoj Kev Trichloroacetaldehyde: Trichloroacetaldehyde tau txais los ntawm cyanidation, dehydrochlorination, thiab hydrolysis. 3. Txoj Kev Acetic Acid: Acetic acid tau txais los ntawm chlorination nyob rau hauv iodine catalysis.

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