Bromocresol Violet / Bromocresol Red / Dibromo-O-Cresol Sulfolaphthalein / Dibromo-O-Cresol Sulfone / BCP
English name: BCP; Bromocresol purole; 5,5-Dibromo-o-cresolsulfonephthalein
Other names: bromocresol red; dibromo-o-cresol sulfophthalide; dibromo-cresol sulfophthalide
CAS number: 115-40-2
C21H16Br2O5S = 540.22
Level: IND
pH color change range: 5.2 (yellow) ~ 6.8 (purple)
Loss on drying: ≤0.5%
Sodium hydroxide dissolution test: qualified burning residue: ≤0.1%
Traits: slightly yellow crystals. Soluble in ethanol and dilute alkaline solution, almost insoluble in water, melting point 241 ~ 242 ℃. There are irritating uses: biochemical research. Acid-base indicator, adsorption indicator. Amino acid chromatography internal standard. Silver salt method for titration of thiocyanate. Preserved serum protein by spectrophotometry: RT
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