Igama Lekhemikhali:1,3-Dimethylurea

I-Molecular Formula:I-C3H8N2O

Isisindo se-Molecular:88.11

Isakhiwo:

Inombolo ye-CAS: 96-31-1

Ukucaciswa

Ukubukeka:Okuqinile Okumhlophe

I-Assay(HPLC):95.0% min

Izinga Lokushisa Elincibilikayo: 102°C min N-methyluren(HPLC) 1.0% ubuningi

Amanzi: 0.5% ubuningi

Ukusebenza kanye nezici:

Ama-intermediate emithi, nawo asetshenziswa ekukhiqizeni i-ejenti yokwelapha i-fiber.Isetshenziswa kwezokwelapha ukuze kuhlanganiswe i-theophylline, i-caffeine ne-nificaran hydrochloride.

Izindlela Zokusebenza:

(1) igesi ye-methylamine idluliselwa ku-urea encibilikisiwe, futhi igesi ye-ammonia ekhululiwe iyamuncwa futhi itholakale. Ngemuva kokuthi umkhiqizo wokusabela usupholile, uyakhishwa futhi uhlanganiswe kabusha.

(2)i-carbon dioxide yalungiswa ukusabela kwe-gas-solid catalytic nge-monomethylamine.

(3)ukusabela kwe-methyl isocyanate nge-methylamine.

Iphakheji kanye Nesitoreji

Ukupakisha ngesikhwama esingu-25kg, noma Gcina kuphela esitsheni sokuqala endaweni epholile enomoya omuhle. Ziqhelelanise nezinto ezingahambisani. Iziqukathi ezivulwa kufanele zivulwe ngokucophelelaivalwe kabusha futhi igcinwe imile ukuze ingavuzi. Gwema izikhathi zokulondoloza ezinde.

Amanothi
Imininingwane yomkhiqizo kuphela eyereferensi, ucwaningo kanye nokuhlonza.Ngeke sithwale umthwalo noma ingxabano yelungelo lobunikazi.
Uma unemibuzo kwezobuchwepheshe noma ukusetshenziswa, sicela uxhumane nathi ngesikhathi.