Lilac Fire

This demonstration of a redox reaction. The reaction causes a lilac flame, which is best viewed in a darkened room. Mixing glycerol with potassium permanganate (VII) causes an exothermic reaction which oxidises the glycerol to from carbon dioxide and water (hence the steam) and it is itself then reduced. The reaction can be performed in the well formed in the top of a large used candle – when adding the glycerol it looks as if you are lighting the candle by pouring water on it.

Show health and safety information

Please be aware that resources have been published on the website in the form that they were originally supplied. This means that procedures reflect general practice and standards applicable at the time resources were produced and cannot be assumed to be acceptable today. Website users are fully responsible for ensuring that any activity, including practical work, which they carry out is in accordance with current regulations related to health and safety and that an appropriate risk assessment has been carried out.

1 File

You might also like

Resource collection
Resource collection
Resource collection

Published by


Share this resource


This resource is part of whynotchemeng

Lists that tag this content