Cov khoom
1,1-DIMETYLUREA
DIMETHYLUREA Cov Khoom Siv Tshuaj
| Melting point | 178-183 ° C (lit.) |
| Boiling point | 163.08°C (kev kwv yees) |
| ceev | 1.255 Nws |
| vapor siab | 0.008Pa ntawm 25 ℃ |
| Refractive Index | 1.4715 (kwv yees) |
| cia temp. | Khaws hauv qab +30 ° C. |
| solubility | dej: soluble 5%, ntshiab, tsis muaj xim |
| pka ua | 14.73 ± 0.50 (Tshaj tawm) |
| daim ntawv | Crystalline hmoov |
| xim | Dawb mus rau dawb |
| Dej Solubility | Soluble |
| BRN | 1740666 ib |
| LogP | -4.6 ntawm 20 ℃ |
| CAS DataBase Reference | 598-94-7 (CAS DataBase Reference) |
| NIST Chemistry Reference | Urea N, N-dimethyl-(598-94-7) |
| EPA Tshuaj Registry System | 1,1-Dimethylurea (598-94-7) |
DIMETHYLUREA Cov Khoom Muag
1,1-Dimethylurea yog cov tshuaj sib xyaw nrog cov mis molecular C3H8N2O.Nws tseem hu ua dimethylurea lossis DMU.Nws yog dawb crystalline hmoov, yooj yim soluble nyob rau hauv dej thiab organic solvents.
1,1-Dimethylurea muaj ntau yam kev siv hauv kev lag luam sib txawv.Ib qho ntawm nws cov kev siv tseem ceeb yog ua ib qho reagent hauv organic synthesis.Nws yog feem ntau siv los ua ib qhov chaw ntawm dimethylamine, ib qho tseem ceeb hauv tsev thaiv hauv kev tsim tshuaj, dyes thiab lwm yam tshuaj.
Hauv kev lag luam kws tshuaj, 1,1-dimethylurea yog siv los ua tus thawj coj rau kev sib txuas ntawm cov tshuaj thiab tshuaj intermediates.
Nws tuaj yeem siv los ua tus neeg sawv cev tiv thaiv rau chemically rhiab ua haujlwm pab pawg thaum muaj kev cuam tshuam cov organic.Nws kuj yog siv los ua ib qho catalyst hauv qee qhov kev xav.
Tsis tas li ntawd, 1,1-dimethylurea kuj tseem siv rau hauv kev sib txuas ntawm herbicides thiab fungicides.Nws ua raws li stabilizer thiab txhim kho kev ua haujlwm ntawm cov tshuaj agrochemicals.Nws yog ib qho tseem ceeb heev los tswj 1,1-dimethylurea nrog kev saib xyuas vim tias nws pom tias muaj kev phom sij yog tias noj los yog sib cuag nrog daim tawv nqaij lossis qhov muag.Kev ceev faj txog kev nyab xeeb tsim nyog yuav tsum tau ua thaum ua haujlwm nrog cov khoom siv no, xws li hnav cov khoom tiv thaiv thiab ua kom muaj cua zoo.
Nyob rau hauv cov ntsiab lus, 1,1-dimethylurea yog ib tug multifunctional compound uas yuav siv tau nyob rau hauv cov organic synthesis, kws, thiab agrochemicals.Nws cov khoom ua rau nws muaj txiaj ntsig zoo li reagent, tiv thaiv, thiab catalyst hauv ntau yam txheej txheem tshuaj.
Cov ntaub ntawv kev nyab xeeb
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 ib |
| Cov lus hais txog kev nyab xeeb | 26-36 : kuv |
| WGK Germany | 3 |
| RTECS | wb 9867985 |
| TSCA | Yog lawm |
| HS Code | 2924 19 00 Nws |
| Cov Ntaub Ntawv Muaj Xwm Ceev | 598-94-7 (Cov Ntaub Ntawv Tshuaj Tiv Thaiv) |
DIMETHYLUREA Kev Siv Thiab Kev Sib Txuas
| Chemical Properties | Dawb mus rau dawb crystalline hmoov |
| Siv | 1,1-DimethylureaN,N-dimethylurea) tau siv nyob rau hauv Dowex-50W ion txauv resin-promoted synthesis ntawmN, N'-disubstituted-4-aryl-3,4-dihydropyrimidinones. |
| Kev piav qhia dav dav | Nonlinear optical zog ntawm 1,1-dimethylurea (N,N'dimethylurea), tau raug soj ntsuam los ntawm qhov thib ob-harmonic tiam. |
| Flammability thiab Explosibility | Tsis cais |
