Tris Base Cas: 77-86-1 99.5% Dawb crystalline khoom
| Catalog Number | xwm 90056 |
| Khoom npe | Tris Base |
| CAS | 77-86-1 : kuv |
| Molecular Formula | C4H11NO3 |
| Molecular Luj | 121.14 Nws |
| Cov ntaub ntawv khaws cia | Ambient |
| Harmonized tariff Code | 29221900 ib |
Khoom Specification
| Melting Point | 168.0 ° C - 172.0 ° C |
| Qib | USP Qib |
| Dej | <0.2% |
| Arsenic | 1 ppm max |
| Kev txheeb xyuas | IR conforms |
| pH | 10.0-11.5 Nws |
| Poob rau ziab | 0.5% max |
| Solubility | Ntshiab, tsis muaj xim |
| Assay | 99.5% min |
| Calcium | 3 ppm max |
| Hlau | 5 ppm max |
| Tooj | 1 ppm max |
| Residue ntawm Ignition | 0.1% max |
| Insoluble Matter | <0.03% |
| Heavy Metals (Pb) | 5 ppm max |
| Chloride | 3 ppm max |
| Qhov tshwm sim | Dawb crystalline khoom |
| Xim (20% aq tov) | <5 |
| Identity Ph. Eur | Ua raws |
| Kev tshawb fawb siv nkaus xwb, tsis yog siv rau tib neeg | kev tshawb fawb siv xwb, tsis yog rau tib neeg siv |
Txheej txheem cej luam:Tris lub npe yog tris (hydroxymethyl) aminomethane;tromethamine;tromethamine;2-amino-2-(hydroxymethyl)-1,3-propanediol.Nws yog dawb crystalline hmoov los yog hmoov.Soluble nyob rau hauv ethanol thiab dej, me ntsis soluble nyob rau hauv ethyl acetate thiab benzene, insoluble nyob rau hauv ether thiab carbon tetrachloride, corrosive rau tooj liab thiab txhuas, thiab irritating tshuaj.
Cov lus qhia:Tromethamine yog sodium-free amino buffer puag, uas reacts nrog H2CO3 nyob rau hauv lub cev kua los txo H2CO3 thiab tsim HCO32- tib lub sij hawm.Nws tuaj yeem nqus tau hydrogen ions thiab kho acidemia.Muaj zog, thiab tuaj yeem nkag mus rau hauv daim nyias nyias ntawm tes, feem ntau siv rau hauv kev mob metabolic thiab ua pa acidemia.
Buffering Properties:Tris yog lub hauv paus tsis muaj zog nrog pKa ntawm 8.1 ntawm 25 ° C;Raws li txoj kev xav tsis, qhov kev ua haujlwm zoo ntawm Tris tsis yog nyob nruab nrab ntawm pH 7.0 thiab 9.2.Lub pH ntawm aqueous tov ntawm Tris puag yog hais txog 10.5.Feem ntau, hydrochloric acid yog ntxiv los kho tus nqi pH rau tus nqi xav tau, thiab tom qab ntawd cov tshuaj tsis haum nrog tus nqi pH tuaj yeem tau txais.Txawm li cas los xij, kev saib xyuas yuav tsum tau them rau cov txiaj ntsig ntawm qhov kub thiab txias ntawm pKa ntawm Tris.
Daim ntawv thov:Tris yog dav siv nyob rau hauv mob metabolic thiab ua pa acidemia.Nws yog ib qho alkaline tsis thiab muaj cov nyhuv buffering zoo ntawm metabolic acidosis thiab enzymatic kev ua si.Tris feem ntau yog siv los ua cov khoom siv roj ntsha thiab feem ntau tsim nrog pH qhov tseem ceeb ntawm 6.8, 7.4, 8.0, thiab 8.8.Nws cov qauv qauv thiab pH tus nqi sib txawv heev nrog rau qhov kub thiab txias.Nyob rau hauv dav dav Chemicalbook hais tias rau txhua txhua degree nce nyob rau hauv qhov kub thiab txias, pH txo los ntawm 0.03.Tris yog dav siv nyob rau hauv kev npaj ntawm buffers nyob rau hauv biochemical thiab molecular biology thwmsim.Piv txwv li, Tris yuav tsum muaj nyob rau hauv ob qho tib si TAE thiab TBE buffers (rau solubilization ntawm nucleic acids) feem ntau siv nyob rau hauv biochemical thwmsim.Txij li thaum nws muaj cov amino pawg, nws tuaj yeem ua rau muaj kev sib txuam nrog aldehydes.
