Phenolphthalein Solution – 500ml (UN 1170)

Phenolphthalein Solution 500ml is a ready‑to‑use laboratory indicator widely used in educational science settings. Commonly prepared in an alcoholic solvent, this solution contains the indicator phenolphthalein (CAS Number 77‑09‑8) and is supplied for controlled use in school and college laboratories.

Classified under UN Number 1170, this product is supplied in a clearly labelled 500ml bottle, making it suitable for repeated classroom demonstrations and practical activities. Phenolphthalein solution is colourless in acidic and neutral conditions and turns pink in alkaline solutions, making it an essential tool for teaching acid‑base chemistry.

Please note: This chemical is supplied exclusively to educational establishments. You must be logged in with an approved school or college account to purchase. Once logged in, the “Add to Basket” button will appear.

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Due to courier and safety regulations, chemical products cannot be returned. This does not affect your statutory rights.

Key Features

• Phenolphthalein Solution supplied in a 500ml bottle
• Commonly used acid‑base indicator
• CAS Number: 77‑09‑8
• UN Number: 1170
• Clear solution that turns pink in alkaline conditions
• Suitable for educational laboratory use
• Ideal volume for repeated lessons and demonstrations
• Available to schools and educational establishments only

Ideal for School Science Lessons

Phenolphthalein solution is an essential resource for KS3, GCSE and A‑Level Chemistry, particularly when teaching acids, bases, and pH. It is commonly used in:

• Acid‑alkali indicator investigations
• Titration experiments and end‑point detection
• Comparing the behaviour of different pH indicators
• Demonstrating neutralisation reactions
• Developing practical skills in accurate measurement and observation

When prepared by technicians and used under appropriate supervision, phenolphthalein solution helps students clearly visualise chemical change, supporting both conceptual understanding and practical competence. The 500ml size makes it especially suitable for busy science departments and preparation rooms.

Clear, reliable, and curriculum‑aligned, Phenolphthalein Solution 500ml is a core teaching aid for effective and engaging chemistry lessons in schools and colleges.