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2,4-DNP - What you need to know

3 November 2016

There have been several controlled explosions at schools across England due to the incorrect storage of 2,4-DNP (also known as Brady’s reagent). This chemical is safe if stored correctly and is commonly used in A Level Chemistry.

Following several media reports, we wanted to remind school science staff working with the chemical that the solid should be kept damp at all times and within a larger container with a little water at the bottom. Read the CLEAPSS Hazcard 30

If you suspect that the material has dried out or there is no water in the outer container DO NOT open the reagent bottle. If you have concerns, please read CLEAPSS advice and contact them below. Schools in Scotland should refer to SSERC guidance and the SSERC Helpline if they have concerns.

Contact the CLEAPSS Helpline
Please note that the helpline is experiencing a high volume of calls. If your query is regarding 2,4-DNP please follow CLEAPSS advice carefully as it maybe that no immediate risk is posed.

Department for Education Advisory Note
Department for Education would like to remind all schools and post-16 institutions of the importance of ensuring all chemicals used for practical science activities are stored safely. CLEAPSS, the science and technology advisory service, that provides support to the vast majority of schools and colleges, has recently received a number of calls regarding a particular chemical - 2,4-DNP (2,4-dinitrophenylhydrazine).
For advice on safe storage of chemicals, institutions should check the CLEAPSS website. If you have further questions please contact the CLEAPSS helpline on 01895 251496. Specific advice on 2,4-DNP can be found on the CLEAPSS website.