Bromocresol Green nrog CAS 76-60-8

CAS:76-60-8 ib

MF:C21H14Br4O5S

MW:698.01 ib

EINECS:200-972-8

Synonym: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-dioxide m-cresol; 4,4-(3h-2,1-benzoxathiol-3-ylidene)bis(2,6-dibromo-,s,s-dioxidephenol

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Bromocresol Green CAS 76-60-8 yog dab tsi?

Bromocresol ntsuab yog me ntsis soluble hauv dej thiab soluble hauv ethanol, ether, ethyl acetate, thiab benzene. rhiab heev rau alkali, Bromocresol ntsuab hloov xim xiav-ntsuab ntsuab tshwj xeeb thaum ntsib alkaline aqueous daws. Bromocresol ntsuab tuaj yeem siv los ua qhov taw qhia, tshwm daj ntawm pH 3.8 thiab xiav-ntsuab ntawm pH 5.4.

Specification

Cov khoom	Specification
PH (hloov ncua sij hawm)	3.8 (daj ntsuab)-5.4 (xiav)
Maximum nqus wavelength (nm) λ1 (PH 3.8) λ2 (PH 5.4)	440-445 : kuv 615-618 : kuv
Mass absorption coefficient, L/cm · g α1 (L1PH 3.8, qauv qhuav) α2 (L2PH 5.4, qauv qhuav)	24-28 : kuv 53-58 : kuv
Ethanol dissolution xeem	hla
Burning residue (xws li sulfate)	≤ 0.25
Poob rau ziab	≤3.0

Daim ntawv thov

1.Bromocresol ntsuab yog Cell staining agent
2.Bromocresol ntsuab yog Acid-base qhia, pH xim hloov ntau yam 3.8 (daj) rau 5.4 (xiav-ntsuab)
3.Bromocresol ntsuab sodium ntsev yog feem ntau siv nyob rau hauv colorimetric txiav txim siab ntawm acidity thiab alkalinity. Bromocresol Green's sodium ntsev tov yog siv los ua tus neeg saib xyuas xim rau kev ntsuas pH tus nqi los ntawm spectrophotometric. Siv los ua ib qho reagent rau nyias txheej chromatography los txiav txim aliphatic hydroxyacids thiab alkaloids, thiab raws li ib tug extraction thiab sib cais tus neeg saib xyuas rau photometric txiav txim ntawm quaternary ammonium cations.