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B5880

Sigma-Aldrich

Bromocresol Purple

Powder

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Synonym(s):
5,5′-Dibromo-o-cresolsulfonphthalein, Bromcresol purple sultone form
Empirical Formula (Hill Notation):
C21H16Br2O5S
CAS Number:
115-40-2
Molecular Weight:
540.22
Beilstein:
359618
EC Number:
204-087-8
MDL number:
MFCD00011681
UNSPSC Code:
12171500
PubChem Substance ID:
24891871
NACRES:
NA.47

grade

technical grade

Quality Level

200

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

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Handbook of Acid-Base Indicators (2007)
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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
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
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