318736

Bromocresol Purple solution

0.04 wt. % in H₂O

• Synonym(s): 5′,5′′-Dibromo-o-cresolsulfonephthalein sodium salt
• Empirical Formula (Hill Notation): C₂₁H₁₅Br₂NaO₅S
• CAS Number: 62625-30-3
• Molecular Weight: 562.20
• MDL number: MFCD00148896
• UNSPSC Code: 12171500
• PubChem Substance ID: 24859142
• NACRES: NA.47

Properties

• 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
• SMILES string: [Na+].Cc1cc(cc(Br)c1O)\C(=C2/C=C(C)C(=O)C(Br)=C2)c3ccccc3S([O-])(=O)=O
• 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
• InChI key: WNOIORUCCYNQPE-UHFFFAOYSA-M

Description

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.

Safety Information

• Storage Class Code: 10 - Combustible liquids
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves