Bromocresol Green sodium salt A dye used as a pH indicator

Bromocresol Green sodium salt (CAS 62625-32-5)

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Synonym: sodium alpha-(3,5-dibromo-2-methyl-4-oxo-2,5-cyclohexadienylidene)-alpha-(3,5-dibromo-4-hydroxyphenyl)toluenesulfonate
Application: A dye used as a pH indicator
CAS Number: 62625-32-5
Molecular Weight: 720.00
Molecular Formula: C21H13Br4NaO5S
* Refer to Certificate of Analysis for lot specific data (including water content).
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Bromocresol Green sodium salt (BCG) is a dye of the triphenylmethane family (triarylmethane dyes). BCG is used as a pH indicator and as a tracking dye for DNA agarose gel electrophoresis. It also binds quantitatively with human albumin forming an intense blue-green complex. Transition Interval: pH 3.8 (yellow) to pH 5.4 (blue).


References

1. Diamond, D., et al. 2008. Talanta. 75: 606-612. PMID: 18585121

Appearance :
Powder
Physical State :
Solid
Solubility :
Soluble in water (40 mg/ml), and ethanol (60 mg/ml).
Storage :
Store at -20° C
Melting Point :
230° C (lit.)(dec.)
Boiling Point :
626° C at 760 mmHg (Predicted) (tautomer)
Refractive Index :
n20D ~1.72 (Predicted)
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
WGK Germany :
3
PubChem CID :
4160768
Merck Index :
14: 1386
MDL Number :
MFCD00148898
EC Number :
263-657-4
SMILES :
CC1=C(C(=C(C=C1C(=C2C=C(C(=O)C(=C2C)Br)Br)C3=CC=CC=C3S(=O)(=O)[O-])Br)O)Br.[Na+]

Download SDS (MSDS)

Certificate of Analysis

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