Barbituric acid yog dab tsi?
Barbituric Acid yog tsim los ntawm condensation ntawm malonic acid thiab urea, uas tsis muaj tshuaj loog. Txawm li cas los xij, tom qab C2 thiab C5 atoms hloov los ntawm cov noob sib txawv, ntau yam barbiturates tuaj yeem tsim tawm. Piv txwv li, cov pa oxygen hauv C2 yog hloov los ntawm leej faj, uas yog, thiobarbital yog tsim.
Barbituric Acid hmoovyog dawb crystalline hmoov. Melting point 245 degree, lub cev qhuav dej thiab decomposition ntawm 280 degree. Soluble nyob rau hauv dej kub thiab ether, insoluble nyob rau hauv dej txias thiab cawv. React nrog hlau los ua ntsev.
| Khoom npe | Barbituric acid |
| CAS | 67-52-7 |
| Cov mis mos molecular | C4H4N2O3 |
| Molecular hnyav | 128.09 |
| EINECS Number | 200-658-0 |
| Kev cia khoom | Khaws hauv qab +30 degree . |
| Melting point | 248-252 degree (dec.) (lit.) |
| Solubility | Solubility hauv dej yog 11.45 g / L. |
| Qhov tshwm sim | Dawb hmoov |
| Boiling point | 260 degree (decomposition) |
| Qhov ntom | 1.6006 (kev kwv yees kwv yees) |
Dab tsi yog cov txheej txheem ntawm kev ua ntawm Barbituric acid?
Barbituric acid ua rau ntau theem ntawm lub hauv paus paj hlwb thiab muaj cov nyhuv inhibitory. Nws cov sedative thiab hypnotic mechanism yuav muaj feem xyuam rau nws cov kev xaiv inhibition ntawm thalamic reticular ascending activation system, yog li thaiv qhov kev ua ntawm excitement rau cerebral cortex. Nws cov nyhuv anticonvulsant yog ua tiav los ntawm inhibiting synaptic kis tau tus mob nyob rau hauv lub hauv nruab nrab paj hlwb thiab ua rau cov pib ntawm hluav taws xob stimulation nyob rau hauv lub cev muaj zog cheeb tsam ntawm cerebral cortex.
Khoom Specification
| Yam khoom | Specification | Cov txiaj ntsig |
| Qhov tshwm sim | Dawb crystalline hmoov | Ua raws |
| Melting point | 253ºC | 253ºC |
| Poob rau ziab | 0.1% max | Ua raws |
| sulphate tshauv | 0.02% max | 0.02% max |
| Assay | 99.0% min | 99.40% |
| Xaus | Confom nrog enterprise specification. | |
Lub luag haujlwm ntawm Barbituric Acid yog dab tsi?
Barbituric Acid hmoovyog siv los ua raw khoom rau cov organic synthesis, tshuaj, plastics thiab dye intermediates. Nws yog ib qho nruab nrab ntawm cov tshuaj xws li vitamin B12, thiab tseem tuaj yeem siv los ua polymerization catalyst thiab kev npaj ntawm benzimidazolone organic pigment. Nws kuj tseem siv tau los ua ib qho reagent rau kev txiav txim siab colorimetric ntawm glyoxal thiab pentosan.
HTML5 atlas ntawm Barbituric acid
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Kev npaj ntawm Barbituric Acid:
Barbituric Acid yog thawj zaug tau los ntawm Adolf von Baer los ntawm cov tshuaj tiv thaiv ntawm dibromobarbituric acid thiab hydrogen cyanide, thiab tom qab ntawd nws tau luam tawm txoj kev txo cov dibromobarbituric acid los ntawm sodium amalgam thiab hydrogen iodide. Tam sim no, txoj kev siv feem ntau yog cov tshuaj tiv thaiv condensation ntawm diethyl malonate thiab urea catalyzed los ntawm sodium ethoxide:
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Yuav ua li cas thiab qhov twg yuav Barbituric Acid hmoov lag luam wholesale?
Koj tuaj yeem tso siab rau peb qhov kev txiav txim vim tias peb muaj cov ntaub ntawv zoo ntawm kev muag tshuaj qhia kev cai lij choj.
Peb ua qhov kev kuaj xyuas ywj pheej ntawm txhua yam khoom thiab tom qab ntawd muag rau peb cov neeg siv khoom hwm.
Xa koj Cov Lus Nug kom paub meej ntxiv, Nyem email:allen@faithfulbio.comTam sim no.
Muaj ntau txoj kev xa khoom rau koj xaiv
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Tsheb thauj mus los |
Shipping txoj kev |
Cargo hnyav xav tau |
Qhov zoo |
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3-7 hnub |
DHL, Lub teb chaws Yelemees DHL, Lub teb chaws Yelemees DPD, |
Haum rau qis dua 50kg. |
Peb muaj warehouses nyob rau hauv lub teb chaws Yelemees thiab California, teb chaws USA, |
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7-15 hnub |
Los ntawm Cua |
Haum rau ntau tshaj 50kg. |
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15-60 hnub |
Los ntawm Hiav Txwv |
Haum rau ntau tshaj 500kg. |
Xa koj Cov Lus Nug kom paub meej ntxiv, Nyem email:allen@faithfulbio.comTam sim no.
Tsis lees paub: Cov ntawv luam tawm ntawm lub xaib no yog siv los txhawb kev sib pauv kev kawm thiab kev kawm, thiab tsis txhais hais tias lub vev xaib no pom zoo nrog nws cov kev xav lossis lees paub qhov tseeb ntawm nws cov ntsiab lus. Thov lim kom zoo. Yog tias koj ntseeg tias tsab xov xwm no ua txhaum, thov hu rau tus thawj tswj hwm. Peb tsis muaj lub luag haujlwm rau qhov tshwm sim ntawm kev siv cov ntaub ntawv thiab cov kev pabcuam hauv lub vev xaib no.
Nco tseg: Cov tshuaj no yuav tsum tau siv rau kev tshawb fawb nkaus xwb. Cov lus thov no tsis tau raug soj ntsuam los ntawm Food and Drug Administration. Thov nrog koj tus kws kho mob tham thiab kawm txog cov kev tshawb fawb muaj ua ntej siv lawv. Cov khoom no tsis yog tsim los kuaj xyuas, kho, kho, lossis tiv thaiv txhua yam kab mob.
Cim npe nrov: barbituric acid hmoov cas 67-52-7, Suav teb, lwm tus neeg, manufacturers, hoobkas, customized, lag luam wholesale, yuav, nqe, tej, ntshiab, tsim, luv nqi, kev muag, Tshuag, dawb qauv, raw hmoov, raw khoom, ua hauv Suav teb