Bromothymol Blue Indicator | High-Purity Reagent Grade
$19.99 – $60.00
Chemical Information
- Chemical Name: Bromothymol Blue (BTB)
- CAS Number: 76-59-5
- Molecular Formula: C₂₇H₂₈Br₂O₅S
- Molecular Weight: 624.38 g/mol
- Appearance: Yellow-green crystalline powder or dark blue solution (in water/ethanol)
- Odor: Odorless
- Purity: ≥ 99% (Reagent Grade)
Physical & Chemical Properties
- pH Transition Range: 6.0 (yellow) – 7.6 (blue)
- Solubility: Soluble in ethanol, slightly soluble in water
- Melting Point: 202–205°C (decomposes)
- Absorption Maxima: ~427 nm (acidic form), ~615 nm (basic form)
- Stability: Stable under normal laboratory conditions
Mechanical & Stability Properties
- Light Sensitivity: May degrade upon prolonged UV exposure
- Combustibility: Non-flammable
- Storage Stability: Long shelf life under proper storage conditions
Description
Bromothymol Blue (BTB) is a high-purity pH indicator reagent widely used in laboratory analysis, scientific research, and industrial applications. It is commonly employed in acid-base titrations, medical diagnostics, water quality testing, and educational experiments. With its distinct color transition from yellow to blue across a pH range of 6.0 to 7.6, Bromothymol Blue provides precise pH measurement and reliable analytical performance.
Applications for Bromothymol Blue:
1. Laboratory & Analytical Chemistry
- pH Indicator: Used in titrations and acid-base analysis.
- Buffer Solutions: Employed in pH calibration and testing.
- Spectrophotometric Analysis: Utilized in colorimetric pH measurement.
2. Medical & Biological Research
- Respiratory Studies: Monitors CO₂ levels in medical and physiological applications.
- Cell Culture & Microbiology: Used to assess pH changes in biological media.
- Diagnostic Kits: Component in blood gas and urinalysis test kits.
3. Environmental & Water Quality Testing
- Aquatic pH Monitoring: Determines water alkalinity and acidity in environmental studies.
- Aquarium & Hydroponic Testing: Ensures pH stability for aquatic life and plant growth.
- Industrial Wastewater Analysis: Detects acidity fluctuations in effluent discharge.
4. Educational & Demonstration Experiments
- Acid-Base Experiments: Used in high school and college chemistry labs.
- Color Change Demonstrations: Engages students in hands-on learning of chemical reactions.
- DIY Science Kits: Included in at-home chemistry and learning kits.
5. Industrial & Specialty Applications
- Fermentation Monitoring: Used in brewing, biotechnology, and biofuel production.
- Coatings & Dye Formulations: Incorporated into pH-sensitive inks and textiles.
- Food & Beverage Testing: Evaluates acidity levels in food processing.
Storage
- Store in a cool, dry, and dark environment.
- Keep in tightly sealed containers to prevent moisture absorption.
- Avoid prolonged exposure to light to maintain stability.
Handling
- Use gloves, lab coat, and eye protection when handling.
- Minimize dust formation and avoid inhalation.
- Use in well-ventilated areas or fume hoods.
Safety
- Hazard Classification: Non-toxic but may cause mild irritation upon contact.
- Inhalation Risk: Avoid inhaling fine powder or vaporized solutions.
- First Aid: If in contact with skin or eyes, rinse with water. If ingested, seek medical attention.
Additional information
Size | 10 GRAMS, 25 GRAMS, 50 GRAMS |
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SKU: N/A
Categories: Industrial Chemical, Ph Indicators (5)
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