Bromothymol Blue 0.04% Indicator Solution 500ml

The Bromothymol Blue 0.04% Indicator Solution 500ml is a ready-to-use pH indicator solution, supplied in a larger volume for extended use in busy school laboratories. Prepared as a 0.04% ethanol solution, it provides clear, reliable colour changes for demonstrating acid-base reactions and pH variations.

Identified by CAS No: 76-59-5 and UN Number: 1170, this indicator transitions from yellow (acidic) through green (neutral) to blue (alkaline) within a pH range of approximately 6.0 to 7.6. Its distinct colour change around neutral pH makes it particularly effective for illustrating neutralisation reactions and environmental chemistry concepts.

Supplied in a convenient liquid form, this solution eliminates preparation time and ensures consistent, accurate results across multiple experiments.

Key Features

• 500ml ready-to-use solution – ideal for frequent classroom use
• 0.04% bromothymol blue in ethanol
• Widely used pH indicator
• CAS Number: 76-59-5
• UN Number: 1170
• Colour change: yellow → green → blue
• Effective pH range: ~6.0 to 7.6
• Ideal for neutralisation and pH experiments
• Convenient liquid format for quick and accurate use
• Reliable and consistent performance

Important Purchasing & Safety Information

• Available only to educational establishments
• Login required to purchase this chemical
• Orders shipped to verified school addresses only
• Due to courier regulations, this product is non-returnable
• Must be handled in accordance with COSHH regulations and appropriate laboratory safety procedures

Ideal for School Science Lessons

Suitable for KS3, GCSE, and A-Level chemistry, this indicator solution is an excellent teaching resource for visualising pH changes across a wide range of experiments. It is particularly useful for:

• Demonstrating neutralisation reactions
• Observing pH changes in real time
• Investigating acidic, neutral, and alkaline solutions
• Performing titrations and indicator-based experiments
• Supporting engaging hands-on practical lessons

Note: This solution should be handled in accordance with standard laboratory safety procedures. Appropriate PPE should be worn where necessary.

Convenient, reliable, and highly visual, Bromothymol Blue Indicator Solution is an essential addition to any school laboratory, supporting clear and engaging science teaching.