Bromothymol Blue Indicator Reagent Powder | High-Purity pH Indicator - 25 Grams

Bromothymol Blue (BTB) is a pH indicator dye widely used in laboratories, research, and educational applications. It is highly effective in detecting pH changes in solutions, transitioning from yellow in acidic conditions to blue in alkaline conditions. Bromothymol Blue is commonly utilized in biological research, water testing, chemical titrations, and medical diagnostics.

• Chemical Information

  • Chemical Name: Bromothymol Blue
  • CAS Number: 76-59-5
  • Molecular Formula: C₂₇H₂₈Br₂O₅S
  • Molecular Weight: 624.38 g/mol
  • Appearance: Dark green to blue crystalline powder (solid) or blue liquid (solution)
  • Odor: Odorless
  • Purity: ≥98% (solid form)

• Physical & Chemical Properties

  • Solubility: Slightly soluble in water, highly soluble in alcohols and alkaline solutions
  • pH Transition Range: 6.0 (yellow) – 7.6 (blue)
  • Melting Point: 202-204°C (solid form)
  • Viscosity: N/A (liquid solutions vary based on solvent concentration)
  • Refractive Index: N/A
  • Flash Point: N/A (non-flammable)
  • Biodegradability: Readily biodegradable

• Mechanical & Stability Properties

  • Combustibility: Non-combustible
  • Stability: Stable under normal conditions but sensitive to strong acids and bases
  • Tensile Strength: N/A (liquid or crystalline solid)

• Storage, Handling & Safety

  Storage

  • Store in a tightly sealed container at room temperature.
  • Keep in a dry, cool, and well-ventilated area.
  • Protect from direct sunlight and strong oxidizing agents.

  Handling

  • Wear gloves and protective eyewear when handling.
  • Avoid inhalation and direct skin contact.
  • Use in a well-ventilated area or under a fume hood.

  Safety

  • Hazard Statements: May cause skin and eye irritation; avoid inhalation.
  • Precautionary Measures: Handle with care, and use personal protective equipment.
  • First Aid: If contact occurs, rinse thoroughly with water; if ingested or inhaled, seek medical attention.