Methyl Liab CAS: 493-52-7
| Catalog Number | xwm 90492 |
| Khoom npe | Methyl Liab |
| CAS | 493-52-7 : kuv |
| Molecular Formula | C15H15N3O2 |
| Molecular Luj | 269.30 Nws |
| Cov ntaub ntawv khaws cia | Ambient |
| Harmonized tariff Code | 29270000 ib |
Khoom Specification
| Qhov tshwm sim | Violet siv lead ua |
| Assay | 99% |
| Poob rau ziab | 3% max |
| Kev hloov pauv | PH 4.2 - 6.2 Pink-Daj |
| Solubility ntawm 0.1% (95% Ethanol) | Clear Red Solution |
| Absorption Maximum (pH 4.2) λ 1 max | 523-528 nm |
| Absorption Maximum (pH 6.2) λ 2 max | 430-435 nm |
| Absorbtivity (A1% / 1cm ntawm pH 4.2, ntawm λ 1 max) | 1300-1400 Nws |
| Absorbtivity (A1% / 1cm ntawm pH 6.2, ntawm λ2 max) | 700-800 Nws |
Cov Khoom Siv Tshuaj: Glossy ntshav siv lead ua los yog xim liab-xim av hmoov.Melting point 180-182 ℃.Soluble nyob rau hauv ethanol, glacial acetic acid, yuav luag insoluble nyob rau hauv dej.
Kev Siv: Methyl liab yog ib qho ntawm cov khoom siv feem ntau siv cov kua qaub-puag, cov concentration ib txwm yog 0.1% ethanol tov, pH4.4 (liab)-6.2 (daj).Kuj tseem siv rau hauv vivo staining ntawm protozoa.
Lub hom phiaj: Protozoa nyob dyeing;acid-base qhia, pH discoloration ntau ntawm 4.4 (liab) txog 6.2 (daj);titration ntawm ammonia, tsis muaj zog organic hauv paus thiab alkaloids, tab sis tsis haum rau cov organic acids uas tsis yog oxalic acid thiab picric acid;tuaj yeem ua ke nrog Bromocresol ntsuab thiab methylene xiav daim ntawv qhia sib xyaw kom luv cov xim hloov ntau thiab txhim kho qhov rhiab ntawm xim hloov;adsorption qhia rau nag lossis daus titration, xws li titration ntawm fluoride ion nrog thorium nitrate;Kev txiav txim siab dawb chlorine, chlorite thiab lwm yam oxidants
Siv: protozoa nyob staining, acid-base qhia (pH4.4to6.2), soj ntsuam kuaj ntshav protein biochemical kuaj.Qhov pH discoloration ntau yog 4.4 (liab) - 6.2 (daj).Titrate ammonia, tsis muaj zog organic hauv paus thiab alkaloids, tab sis tsis yog rau cov organic acids dua li oxalic thiab picric acids.Nws tuaj yeem ua ke nrog bromocresol ntsuab thiab methylene xiav los ua ib qho kev qhia sib xyaw kom luv cov xim hloov ntau yam thiab txhim kho qhov rhiab heev ntawm kev hloov xim.Adsorption ntsuas rau nag lossis daus titration, xws li fluoride titration nrog thorium nitrate.Kev txiav txim siab dawb chlorine, chlorite thiab lwm yam oxidants.
