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318701

Sigma-Aldrich

Bromocresol Green sodium salt solution

0.04 wt. % in H2O

Synonym(s):

3′,3′′,5′,5′′-Tetrabromo-m-cresolsulfonephthalein sodium salt

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About This Item

Empirical Formula (Hill Notation):
C21H13Br4NaO5S
CAS Number:
62625-32-5
Molecular Weight:
720.00
MDL number:
MFCD00148898
UNSPSC Code:
12171500
PubChem Substance ID:
24859141
NACRES:
NA.47

form

liquid

Quality Level

100

concentration

0.04 wt. % in H2O

visual transition interval

3.8-5.4, yellow to blue

density

0.981 g/mL at 25 °C

λmax

612 nm

ε (extinction coefficient)

≥10000 at 306-312 nm
≥8000 at 397-403 nm

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[Na+].Cc1c(Br)c(O)c(Br)cc1C2(OS(=O)(=O)c3ccccc23)c4cc(Br)c([O-])c(Br)c4C

InChI

1S/C21H14Br4O5S.Na/c1-9-12(7-14(22)19(26)17(9)24)21(13-8-15(23)20(27)18(25)10(13)2)11-5-3-4-6-16(11)31(28,29)30-21;/h3-8,26-27H,1-2H3;/q;+1/p-1

InChI key

HEFSGAHJDGZCHA-UHFFFAOYSA-M

Related Categories

Biochem/physiol Actions

Bromocresol green is a sulfonephthalein dye. It is mainly used for measuring serum albumin. In acidic conditions, bromocresol green interacts with albumin, thereby resulting in an increase in absorbance at 630nm. The change in absorbance is linked with the concentration of albumin. Bromocresol Green is also a pH indicator, changing from yellow (pH 3.8) to blue color (5.4). It is widely used as a colloidal pigment.

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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