Khoom
1,3-dimethylurea; n, n'-dimethylurea; Cas.: 96-31-1
Cov Khoom Muaj Tshuaj Ntawm 1,3-dimethylurea
Winds Ntag / Xim: Dawb Flake
Vapor siab: 0.00744mmmmhg ntawm 250
● Melting point: 101-104 ° C (Lit.)
● Cov ntsiab lus tsis zoo: 1.413
● Boaring taw tes: 269 miv 760 MMHG
● PKA: 14.5710.46 (kwv yees)
Flash taw tes: 124.3 ° C
● Psa: 41.13000
● Ceev: 0.949 g / cm3
● Cov ntawv tshaj tawm: 0.32700
● Temp cia.: Khaws ntawm RT.
● Solubility.: H2O: 0.1 G / ML, Ntshiab, D
● Dej Solubility .: 765 g / l (21.5c)
● XlogP3: -0.5
Hydrogen BRonor Pub pub Suav: 2
● Hydrogen BRRongle Txais Txais Suav: 1
Resetable Kev Muab Kev Rotatable Caud suav (0
● Muaj pes tsawg cov pawg: 88.063662883
● Cov lej hnyav: 6
● Cov lus tsis zoo: 46.8
Purity / zoo
99%, * Cov ntaub ntawv los ntawm cov xa khoom nyoos
N, n "-DimethylureA * Cov ntaub ntawv los ntawm cov neeg muab khoom siv reagent
Cov Ntaub Ntawv Safty
● POTOSSGRAM (S):
● Cov kab mob txaus ntshai:
Cov nqe lus: 62-63-68
Proferements Kev Nyab Xeeb Kev Nyab Xeeb: 22-24 / 25
Msds Cov Ntaub Ntawv
SDS cov ntaub ntawv los ntawm Liechem
Zoo siv
● Cov Chav Kawm Tshuaj: Nitrogen Teb -> ura compounds
● Ciaj Nrig Smiles: CNC (= O) Nc
At Inhalation Kev phom sij: tsis muaj qhia txog tus nqi uas muaj kev phom sij ntawm cov tshuaj no hauv huab cua.
● Cov txiaj ntsig ntawm kev raug mob luv luv: cov tshuaj yog me me khaus rau lub qhov muag thiab tawv nqaij.
Cov lus piav qhia: 1, 3-dimethylutea yog urea derivative thiab siv los ua nruab nrab hauv cov etthic synthesis. Nws yog cov hmoov tsis muaj xim crystalline nrog me me toxicity. Nws tseem siv rau synthesis ntawm caffeine, cov kws tshuaj, textile pab, tshuaj ntsuab thiab lwm yam. Nyob rau hauv textile ua kev lag luam kev lag luam 1,3-dimethylureAs yog siv los ua kev tsim cov khoom siv formaldehyde-dawb cov neeg ua kom tiav rau cov ntawv nyeem. Hauv cov khoom lag luam Swiss cov khoom muaj 38 cov khoom muaj 1,3-dimethylureA, ntawm lawv 17 cov khoom lag luam los rau cov neeg siv khoom siv. Cov hom khoom lag luam yog piv txwv thiab cov neeg sawv cev tu. Cov ntsiab lus ntawm 1,3-dimethylutea hauv cov neeg siv khoom lag luam muaj txog li 10% (Swiss Khoom Rau npe rau npe, 2003). Siv cov tshuaj pleev ib ce tau ua tiav, tab sis tsis muaj xov xwm muaj rau nws cov ntawv thov.1,3-dimethylureA yog cov organic sib xyaw nrog cov mis (ch3) 2nc (O) NH2. Nws yog xim tsis muaj xim crystalline khoom muaj siab nrog solubility siab hauv dej. 1,3-dimethylurea feem ntau siv los ua cov kuab tshuaj thiab catalyst hauv cov khoom siv organic. Nws tuaj yeem siv nyob rau hauv cov synthesis ntawm ntau yam sib xyaw xws li dyes, fluorescent dyes, thiab plastics. Hauv kev lag luam kws tshuaj, 1,3-dimethylureA kuj tau siv los ua hluavtaws ib co kws tshuaj muaj feem ntau. Ib qho ntxiv, nws yog siv rau hauv kev lag luam xws li txheej ci thiab cov nplaum. Nws yog ib qho tseem ceeb kom nco ntsoov tias 1,3-dimethylutea yog khaus rau ntawm daim tawv nqaij thiab qhov muag, yog li kev ceev faj kev daws teeb meem thaum kov.
● Siv: n, n Hauv kev sib xyaw nrog β-cyclodextrin derivatives, los ua daim ntawv tsawg ntawm cov kuab tshuaj rau hydylroyrimidinones ntawm biginelli hws nyob rau hauv cov mob hnyav.
