Bromocresol Ntsuab Nrog CAS 76-60-8

CAS:76-60-8

MF:C21H14Br4O5S

MW:698.01

EINECS:200-972-8

Lub ntsiab lus:3,3',5,5'-Tetrabromo-m-cresosulfonaphthalein; 4,4'-(3h-2,1-benzoxathiol-3-ylidene)bis(2,6-dibromo-3-methylphenol)s,s-dioxide; 4,4-(3h-2,1-benzoxathiol-3-ylidene)bis(2,6-dibromo-m-cresol)s,s-dioxide m-cresol; 4,4-(3h-2,1-benzoxathiol-3-ylidene)bis(2,6-dibromo-,s,s-dioxidephenol

Sau Koj Cov Lus

Cov Khoom Qhia Txog Khoom

Rub tawm

Cov Cim Npe Khoom

Bromocresol Ntsuab Nrog CAS 76-60-8 yog dab tsi?

Bromocresol ntsuab yaj me ntsis hauv dej thiab yaj hauv ethanol, ether, ethyl acetate, thiab benzene. Nws rhiab heev rau alkali, Bromocresol ntsuab hloov xim xiav-ntsuab tshwj xeeb thaum ntsib cov kua alkaline. Bromocresol ntsuab siv tau ua qhov qhia, tshwm daj ntawm pH 3.8 thiab xiav-ntsuab ntawm pH 5.4.

Cov Lus Qhia Tshwj Xeeb

Cov khoom	Cov Lus Qhia Tshwj Xeeb
PH (lub sijhawm hloov pauv)	3.8 (daj ntsuab) -5.4 (xiav)
Qhov siab tshaj plaws ntawm qhov nqus dej wavelength (nm) λ1（PH 3.8） λ2（PH 5.4）	440~445 615~618
Cov coefficient ntawm kev nqus dej ntau, L/cm2 · g α1 (λ1PH 3.8, qauv qhuav) α2（λ2PH 5.4, qauv qhuav)	24~28 53~58
Kev sim tshuaj ethanol yaj	dhau
Cov seem hlawv (xam li sulfate)	≤0.25
Poob thaum ziab	≤3.0

Daim Ntawv Thov

1. Bromocresol ntsuab yog tus neeg sawv cev ntawm tes
2. Bromocresol ntsuab yog Acid-base qhia, pH xim hloov ntau yam 3.8 (daj) txog 5.4 (xiav-ntsuab)
3. Bromocresol ntsuab sodium ntsev feem ntau siv rau hauv kev txiav txim siab xim ntawm acidity thiab alkalinity. Bromocresol ntsuab sodium ntsev kua yog siv los ua tus neeg sawv cev colorimetric rau kev ntsuas pH tus nqi los ntawm spectrophotometry. Siv ua tus reagent rau nyias txheej chromatography los txiav txim siab aliphatic hydroxyacids thiab alkaloids, thiab ua tus neeg sawv cev rho tawm thiab sib cais rau kev txiav txim siab photometric ntawm quaternary ammonium cations.