Khoom Description
Khoom npe: 1 1 3 3-Tetramethylurea
CAS: 632-22-4 Nr
IB: 211-173-9
Melting point: -1℃(lit.)
Kub taw tes: 177℃(lit.)
Ceev: 0.968 g / mL ntawm 20℃(lit.)
Refractive index: n20/D 1.451 (lit.)
Fp: 150℃F
Specification
| Cov khoom | Specifications |
| Qhov tshwm sim | Tsis muaj xim thiab pob tshab kua |
| Purity | 99% |
| Cia temp. | Inert cua, Chav Kub |
| Pob | 1 kg / hnab, 20 kg / nruas, 25 kg / nruas |
Daim ntawv thov
1. 1,1,3,3-Tetramethylurea feem ntau yog siv los ua cov kub npau npau, polar aprotic hnyav hauv cov organic synthesis, muaj peev xwm ua kom yaj ntau cov organic thiab inorganic tebchaw, suav nrog cov tshuaj tsw qab thiab Grignard reagents.
2. 1 1 3 3-Tetramethylurea CAS 632-22-4 yog ib qho tshuaj tiv thaiv zoo rau cov tshuaj tiv thaiv polymerization, xws li cov synthesis ntawm aramids (xws li, Nomex®) los ntawm cov tshuaj tsw qab diacid chlorides thiab diamines, thiab ua raws li lub hauv paus thiab proton lees txais hauv glycosylation cov tshuaj tiv thaiv rau carbohydrate chemistry.
3. Cov ntawv thov ntawm 1,1,3,3-Tetramethylurea kuj suav nrog nws siv hauv kev tshawb fawb biochemical rau cov kev tshawb fawb protein thiab nkag siab txog hydration dynamics, thiab hauv cov khoom siv science rau kev sib txuas ntawm cov khoom siv xws li mesoporous alumina.
Cia thiab ceev faj
1. Khaws 1,1,3,3-Tetramethylurea nyob rau hauv lub thawv kaw nruj nreem rau hauv qhov chaw txias, qhuav, thiab qhov cua zoo, vim nws yog hygroscopic thiab yuav tsum tau tiv thaiv los ntawm noo noo. Pom zoo cia yog nyob rau hauv cov iav kaw los yog polyethylene ntim, kom deb ntawm tshav ntuj ncaj qha thiab tshav kub.
2. Khaws 1,1,3,3-Tetramethylurea kom deb ntawm cov oxidizing muaj zog, cua sov, sparks, thiab qhib nplaim taws. Tsis txhob sib cuag nrog dej, noo noo, thiab chav. Cov thawv ntim khoom yuav tsum tau muab tso rau hauv av thiab sib koom ua ke thaum hloov tsheb.
3. Ib txwm 1 1 3 3-Tetramethylurea CAS 632-22-4 siv cov cuab yeej tiv thaiv tus kheej tsim nyog (PPE) nrog rau cov hnab looj tes tiv thaiv tshuaj, hnav looj tsom iav kom nruj, thiab hnav khaub ncaws tiv thaiv. Tsuas yog siv cov cua kom txaus los yog hauv cov fume hood, thiab tsis txhob ua pa tawm.
Kev kub ceev teb rau cov dej xau
1. Tam sim ntawd cais qhov chaw nchuav, tshem tawm tag nrho cov qhov hluav taws xob, thiab muab qhov cua txaus. Siv cov cuab yeej tiv thaiv tus kheej tag nrho suav nrog tus kheej - muaj cov cuab yeej ua pa (SCBA). Tsis txhob cia 1,1,3,3-Tetramethylurea nkag mus rau hauv cov dej los yog cov dej.
2. Muaj 1,1,3,3-Tetramethylurea siv inert, tsis yog-cov khoom siv hluav taws xob (xws li cov xuab zeb qhuav lossis lub ntiaj teb). Ua tib zoo sau cov khoom tsis huv uas siv cov cuab yeej hluav taws xob pov thawj rau hauv lub kaw lus kaw, sau cov tshuaj khib nyiab pov tseg kom raug raws li cov cai tswj kev phom sij.
3. Cov neeg ua haujlwm 1 1 3 3-Tetramethylurea CAS 632-22-4 yuav tsum hnav PPE haum thaum ntxuav. Nyob rau hauv cov xwm txheej hluav taws kub, siv cov tshuaj tsuag dej kom txias cov thawv uas muaj hluav taws kub; tua cov tshuaj qhuav, carbon dioxide, los yog ua npuas ncauj, tab sis tsis txhob tau dej hauv cov thawv vim nws yuav ua rau muaj kev kub ntxhov.
Cov ntaub ntawv kev nyab xeeb
1. 1,1,3,3-Tetramethylurea yog cais nrog GHS teeb liab lo lus "Danger". Nws muaj kev phom sij yog tias nqos tau (H302), tuaj yeem ua rau tus menyuam tsis tau yug los (H360D), thiab yog cov kua uas siv tau (H227) nrog lub teeb nyem ntawm 75 degree.
2. 1,1,3,3-Tetramethylurea ua rau tawv nqaij khaus (H315) thiab khaus qhov muag loj (H319), thiab tej zaum yuav ua rau ua pa ua pa (H335). 1 1 3 3-Tetramethylurea CAS 632-22-4 muaj qhov kub thiab txias ntawm 175-178℃1, kev daws teeb meem tsis zoo, feem ntau cov ntsiab lus ntawm - dej thiab melting point.
3. Thermal decomposition ua rau cov pa phem thiab khaus xws li nitrogen oxides, carbon monoxide, thiab carbon dioxide. Nco ntsoov sab laj rau Daim Ntawv Qhia Txog Kev Nyab Xeeb tshwj xeeb (SDS) rau 1,1,3,3-Tetramethylurea kom tiav cov ntaub ntawv txaus ntshai, cov txheej txheem kev pab thawj zaug (P301+P312+P330 rau kev noj, P305+P351+P338 rau qhov muag, P{40} cov lus qhia txog kev tuav tes Cov lus ceeb toom muaj xws li P202 (tsis txhob ua kom txog thaum tag nrho cov lus ceeb toom kev nyab xeeb tau nyeem thiab nkag siab), P280 (hnav hnab looj tes tiv thaiv / qhov muag tiv thaiv), thiab P308+P313 (yog tias kis lossis muaj kev txhawj xeeb, mus ntsib kws kho mob).
Yam khoom pom zoo
| Cov khoom | Khoom npe |
| 1 | Triisopropylsilyl Chloride CAS 13154-24-0 |
| 2 | Tert -Butyldimethylsilyl chloride CAS 18162-48-6 |
| 3 | Tetraethylammonium Chloride CAS 56-34-8 |
| 4 | Tetrabutylphosphonium Chloride CAS 2304-30-5 |
| 5 | Tom ntej: Chlorotriethylsilane CAS 994-30-9 |
| 6 | Tom ntej: Trimethylsulfoxonium Iodide CAS 1774-47-6 |
| 7 | Tom ntej: Trichloroacetonitrile CAS 545-06-2 |
| 8 | Sodium Tert -Pentoxide CAS 14593-46-5 |
| 9 | Tom ntej: Triisopropylsilane CAS 6485-79-6 |
| 10 | Yog tias koj xav tau cov ntaub ntawv ntxiv, txais tos hu rau peb txhua lub sijhawm.WhatsApp: +86 18317156592
|
Ntim
Kev thauj mus los & Kev Them Nyiaj
Txog Kev Thauj Mus Los
Raws li cov kev xav tau ntawm peb cov neeg siv khoom, peb tuaj yeem muab ntau hom kev thauj mus los.
Rau kev txiav txim me me, peb muab kev xa khoom huab cua lossis kev pabcuam xa khoom thoob ntiaj teb xws li FedEx, DHL, TNT, EMS, thiab ntau lwm yam tshwj xeeb ntawm kev thauj mus los thoob ntiaj teb.
Peb tuaj yeem thauj los ntawm hiav txwv mus rau ib qho chaw nres nkoj rau qhov loj dua.
Tsis tas li ntawd, peb tuaj yeem muab cov kev pabcuam tshwj xeeb raws li cov kev xav tau ntawm peb cov neeg siv khoom thiab cov yam ntxwv ntawm lawv cov khoom.
* Peb tuaj yeem muab ntau yam kev xaiv them nyiaj rau peb cov neeg siv khoom.
* Thaum cov nyiaj qis qis, cov neeg siv khoom feem ntau them nrog PayPal, Western Union, Alibaba, thiab lwm yam kev pabcuam zoo sib xws.
* Thaum cov lej tseem ceeb, cov neeg siv khoom feem ntau them nrog T / T, L / C thaum pom, Alibaba, thiab lwm yam.
* Tsis tas li ntawd, ntau tus neeg siv khoom yuav siv Alipay lossis WeChat Them kom them nyiaj.
FAQ
1
Kuv puas tuaj yeem tau txais cov qauv ntawm koj?
Re: Yog lawm, peb xav muab cov qauv rau koj raws li koj xav tau.
2
Koj tus MOQ yog dab tsi?
Re: Feem ntau peb cov MOQ yog 1 kg, tab sis qee zaum nws kuj hloov tau thiab nyob ntawm cov khoom sib txawv.
3
Ntev npaum li cas kuv tuaj yeem tau txais kuv cov khoom tom qab them nyiaj?
Re: Yog tias xa los ntawm couriers lossis huab cua, nws feem ntau raug nqi 5-10 hnub.
Yog tias xa los ntawm hiav txwv, nws feem ntau raug nqi 3-40 hnub, uas nyob ntawm koj qhov chaw.
4
Koj puas muaj kev pabcuam tom qab- muag?
Re: Yog lawm, peb yuav qhia koj txog kev nce qib ntawm qhov kev txiav txim, xws li kev npaj cov khoom, kev tshaj tawm, kev thauj mus los ua raws- nce, kev pabcuam kev lis kev cai, kev taw qhia kev, thiab lwm yam.
Tiv tauj peb
Cim npe nrov: 1 1 3 3-tetramethylurea cas 632-22-4, Tuam Tshoj 1 1 3 3-tetramethylurea cas 632-22-4 manufacturers, lwm tus neeg, Hoobkas
