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Merck
CN

318736

Bromocresol Purple solution

0.04 wt. % in H2O

Synonym(s):

5′,5′′-Dibromo-o-cresolsulfonephthalein sodium salt

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About This Item

Empirical Formula (Hill Notation):
C21H15Br2NaO5S
CAS Number:
62625-30-3
Molecular Weight:
562.20
NACRES:
NA.47
PubChem Substance ID:
24859142
UNSPSC Code:
12171500
MDL number:
MFCD00148896

Key Documents

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InChI

1S/C21H16Br2O5S.Na/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;/q;+1/p-1

SMILES string

[Na+].Cc1cc(cc(Br)c1O)\C(=C2/C=C(C)C(=O)C(Br)=C2)c3ccccc3S([O-])(=O)=O

InChI key

WNOIORUCCYNQPE-UHFFFAOYSA-M

form

liquid

concentration

0.04 wt. % in H2O

pH

5.2-6.8, yellow-green to purple

density

0.991 g/mL at 25 °C

λmax

590 nm

ε (extinction coefficient)

≥60000 at 584-590 nm in 10 mM NaOH

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

Quality Level

200

Related Categories

General description

Bromocresol purple (BCP) is an organic dye and a pH indicator. It changes from yellow (pH 5.2) to purple (6.8). BCP reacts with ammonia to yield ammonium salt. Hence, it can be used as an ammonia sensing probe.

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)

wgk

WGK 1

Storage Class

12 - Non Combustible Liquids

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Certificates of Analysis (COA)

Lot/Batch Number
SHBT3166
0000373360
0000346239
0000373360
0000346239

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Optical fiber ammonia sensing probes using reagent immobilized porous silica coating as transducers
Tao S, et al.
Sensors and Actuators B, Chemical, 115(1), 158-163 (2006)
Handbook of Acid-Base Indicators (2007)

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