m-toluic asidindi kristalo woyera kapena wachikasu, pafupifupi wosasungunuka m'madzi, sungunuka pang'ono m'madzi otentha, sungunuka mu ethanol, etha. Ndipo mawonekedwe a maselo C8H8O2 ndi nambala ya CAS 99-04-7. Amagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana pazifukwa zosiyanasiyana. M'nkhaniyi, tiwona momwe m-toluic acid imapangidwira, kagwiritsidwe ntchito, komanso kusungunuka kwake.
Makhalidwe a m-toluic acid:
m-toluic asidindi onunkhira pang'ono, oyera crystalline olimba ndi malo osungunuka a 105-107 ° C. Amasungunuka pang'ono m'madzi, ndipo amasungunuka mu zosungunulira za organic monga mowa, benzene, ndi ether. Kapangidwe kake ka m-toluic acid kumaphatikizapo mphete ya benzene yokhala ndi gulu la carboxyl -COOH yolumikizidwa ndi mphete pamalo a meta. Kapangidwe kapangidwe kameneka kamapereka m-toluic acid katundu ndi ntchito zosiyanasiyana.
Kugwiritsa ntchito m-toluic acid:
m-toluic asidindi mankhwala ofunikira apakati omwe amagwiritsidwa ntchito m'mafakitale osiyanasiyana, kuphatikiza mankhwala, mapulasitiki, ndi utoto. Amagwiritsidwa ntchito kwambiri popanga metolachlor, mankhwala opha tizilombo omwe amagwiritsidwa ntchito poletsa udzu mu chimanga ndi soya. m-toluic acid imakhala ndi gawo lofunikira pakuphatikizika kwa metolachlor, komwe kumakhudza momwe m-toluic acid ndi thionyl chloride amapanga chapakati chomwe chimakonzedwanso kuti chipange chomaliza.
Kugwiritsiridwa ntchito kwina kwa m-toluic acid ndiko kupanga ma polima monga ma polyamides ndi ma polyester resins. Ma polima awa amagwiritsidwa ntchito popanga zinthu zosiyanasiyana monga nsalu, mapulasitiki, ndi zomatira. m-toluic acid ndi gawo lofunikira pakuphatikizika kwa ma polima awa, pomwe amagwira ntchito ngati monoma yomwe imalumikizana ndi mamolekyu ena kupanga unyolo wa polima.
Kusungunuka kwa m-toluic acid:
m-toluic asidiamasungunuka m'madzi pang'ono, kutanthauza kuti amasungunuka m'madzi pang'ono. Kusungunuka kwa m-toluic acid m'madzi ndi pafupifupi 1.1 g/L kutentha kwa firiji. Kusungunuka kumeneku kumayendetsedwa ndi zinthu zosiyanasiyana monga kutentha, pH, ndi kupezeka kwa zosungunulira zina mu zosungunulira.
Kusungunuka kochepa kwa m-toluic acid m'madzi kumachitika chifukwa cha kupezeka kwa gulu la carboxyl mu kapangidwe kake. Gulu la carboxyl ndi gulu logwira ntchito polar lomwe limalumikizana ndi mamolekyu amadzi kudzera mu mgwirizano wa haidrojeni. Komabe, mphete ya benzene mu m-toluic acid ndi yopanda polar, zomwe zimapangitsa kuti ithamangitse mamolekyu amadzi. Chifukwa cha zinthu zosemphanazi, m-toluic acid cas 99-04-7 imakhala ndi kusungunuka kochepa m'madzi.
Pomaliza:
m-toluic asidi ca 99-04-7ndi yofunika wapakatikati mankhwala ndi ntchito zosiyanasiyana mafakitale. m-toluic acid cas 99-04-7 amagwiritsidwa ntchito popanga metolachlor, polyamides, ndi polyester resins. Ngakhale kufunikira kwake m'mafakitalewa, m-toluic acid imakhala ndi kusungunuka kochepa m'madzi. Katunduyu ndi chifukwa chakusemphana kwamagulu ake ogwirira ntchito polar ndi nonpolar. Komabe, kusungunuka kochepa kwa m-toluic acid sikukhudza phindu lake m'mafakitale omwe amagwira ntchito.
Nthawi yotumiza: Mar-12-2024