BROMPHENOL RED

English name: Bromophenol Red

Chemical formula: C19H10Br4O5S

Molar mass: 669.86 g/mol

CAS number: 115-39-9

EC number: 204-087-1

Hazard statements and classification

• H-statements: no data
• P-statements: no information
• RID/ADR: not applicable
• UN: not applicable

Physical and chemical properties

• Form: solid
• Color: yellow to reddish-violet (depending on pH)
• Odor: no information
• pH of solution (1 g/l, 20°C): no information
• Color change range: pH 5.2 (yellow) - 6.8 (violet)
• Melting point: no data available
• Boiling point: no data available
• Autoignition: no data
• Flash point: no data available
• Explosion limits: no data available
• Vapor pressure: no data available
• Density: no data available
• Bulk density: no data

Solubility

• in water: slightly soluble
• in organic solvents: readily soluble in ethanol, methanol

Additional notes

Used as a pH indicator in analytical chemistry and biochemistry. It changes color in the pH range of 5.2 to 6.8 and is therefore suitable, among other things, for the titration of weak acids and bases.