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B5880

Sigma-Aldrich

Bromocresol Purple

Powder

Synonym(s):

5,5′-Dibromo-o-cresolsulfonphthalein, Bromcresol purple sultone form

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About This Item

Empirical Formula (Hill Notation):
C21H16Br2O5S
CAS Number:
Molecular Weight:
540.22
Beilstein/REAXYS Number:
359618
EC Number:
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:
NACRES:
NA.47

product name

Bromocresol Purple, Technical grade

grade

technical grade

Quality Level

form

powder

color

gray to light purple

pH

5.2-6.8, yellow to purple

mp

240 °C (dec.) (lit.)

solubility

methanol: 4 mg/mL, orange

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

Cc1cc(cc(Br)c1O)C2(OS(=O)(=O)c3ccccc23)c4cc(C)c(O)c(Br)c4

InChI

1S/C21H16Br2O5S/c1-11-7-13(9-16(22)19(11)24)21(14-8-12(2)20(25)17(23)10-14)15-5-3-4-6-18(15)29(26,27)28-21/h3-10,24-25H,1-2H3

InChI key

ABIUHPWEYMSGSR-UHFFFAOYSA-N

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General description

Bromocresol purple is a pH indicator. It changes from yellow (5.2) to purple (6.8).

Application

Bromocresol purple has been used as a pH indicator in the yeast culture media. It has been used as a pH indicator in the culture media of Geobacillus stearothermophilus subsp. Calidolactis.
Spectrophotometric determination of serum-albumin

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves


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Sabnis RW
Handbook of Acid-Base Indicators (2007)
Superoxide triggers an acid burst in Saccharomyces cerevisiae to condition the environment of glucose-starved cells.
Baron JA, et al.
The Journal of Biological Chemistry, 288, 4557-4566 (2013)
Robust experimental design for optimizing the microbial inhibitor test for penicillin detection in milk.
Nagel OG, et al.
Letters in Applied Microbiology, 48, 744-749 (2009)
C H White et al.
Journal of dairy science, 89(7), 2459-2464 (2006-06-15)
The MicroFoss method was evaluated for its effectiveness as an indicator of fluid milk shelf life. Half-gallon, 2% fat fluid milk samples (n = 90) were obtained from a milk processing plant on 3 occasions postpasteurization and evaluated for shelf
M Arab Chamjangali et al.
Journal of hazardous materials, 166(2-3), 701-705 (2009-01-13)
A simple, selective, and sensitive kinetic spectrophotometric method is described for the determination of trace amounts of phenylhydrazine, which is based on its inhibition effect on the reaction between meta cresol purple (MCP) and periodate in the presence of bromide

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