Bromothymol Blue Indicator [CAS number: 76-59-5] - 10g

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Description

Bromothymol Blue - 10g

Other Names: BTB, 3',3''-Dibromothymolsulfonphthalein

CAS Number: 76-59-5
Sum Formula: C27H28Br2O5S
Molar Mass: 624.38 g/mol
Appearance: Red to purple crystalline powder

Bromothymol blue is a pH indicator dye widely used in analytical chemistry. It changes color in the pH range of approximately 6.0 to 7.6, shifting from yellow in acidic conditions to blue in basic conditions. It is a sulfonephthalein dye structurally related to phenolphthalein and thymol blue.

Applications
Analytical Chemistry: Commonly used in titrations and other pH determination experiments.
Environmental Chemistry: Used in studies involving aquatic pH balance, CO₂ measurement, and water quality testing.
Laboratory Reagents: Serves as a component in buffers and indicators for visual monitoring of acid-base reactions.

Safety
Signal Word: None

Hazard Statements:
None

Precautionary Statements:
None

First Aid Measures
Eye Contact: Rinse thoroughly with water. Seek medical attention if symptoms persist.
Skin Contact: Wash with soap and water. Remove contaminated clothing.
Inhalation: Move to fresh air. Seek medical attention if breathing difficulties occur.
Ingestion: Rinse mouth with water. Seek medical advice if feeling unwell.

Handling and Storage
Storage Conditions: Store tightly closed in a cool, dry, and well-ventilated area. Protect from light and incompatible substances.
Handling Precautions: Avoid dust formation. Use protective equipment to prevent exposure.

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