Bromocresol Purple is a pH indicator that is typically prepared as a 0.04% solution. It is used to measure albumin in medical laboratories and is added to acid stop baths used in photographic film processing to indicate when the solution is no longer acidic and needs to be replaced.
Synonyms: BCP ; 5,5-Dibromo-o-cresolsulfonphthalein
|Light purple or pink to yellow-tan
|Consistent with structure