Igama leKhemikhali:1,3-Dimethylurea

Ifomula yeMolekyuli:C3H8N2O

Ubunzima beemolekyuli:88.11

Ulwakhiwo:

Inombolo ye-CAS: 96-31-1

Inkcazo

Inkangeleko: Imhlophe Eqinileyo

Uvavanyo (HPLC): 95.0% min

Ubushushu bokunyibilika: 102°C min N-methyluren(HPLC) 1.0% max

Amanzi: 0.5% ubuninzi

Ukusebenza kunye neempawu：

Ii-intermediates zamayeza, ezikwasetyenziswa ekuveliseni i-arhente yonyango lwefayibha. Zisetyenziswa kwezonyango ukwenza i-theophylline, i-caffeine kunye ne-nificaran hydrochloride.

Iindlela zokusetyenziswa:

(1) igesi ye-methylamine idluliselwa kwi-urea enyibilikisiweyo, kwaye igesi ye-ammonia ekhutshiweyo iyafunxwa kwaye ibuyiselwe. Emva kokuba imveliso yokusabela ipholile, iyakhutshwa ize iphinde iphindwe yenziwe ikristale.

(2) ikharbon diokside yalungiswa nge-gas-solid catalytic reaction kunye ne-monomethylamine.

(3)impendulo ye-methyl isocyanate kunye ne-methylamine.

Iphakheji kunye noGcino

Ukupakishwa ngengxowa engama-25kg, okanye Gcina kuphela kwisikhongozeli sokuqala kwindawo epholileyo nengena umoya. Gcina kude nezinto ezingahambelaniyo. Izikhongozeli ezivuliweyo mazigcinwe ngononophelozivalwe kwakhona kwaye zigcinwe zime nkqo ukuze zingaphumi. Kuphephe ixesha elide lokugcina.

Amanqaku
Ulwazi lwemveliso lolwereferensi, uphando kunye nokuchonga kuphela. Asiyi kuthwala uxanduva okanye impikiswano yelungelo elilodwa lomenzi.
Ukuba unemibuzo malunga nobugcisa okanye ukusetyenziswa, nceda unxibelelane nathi ngexesha elifanelekileyo.