Oxidising chemicals that readily give off oxygen, including materials that react chemically to oxidize combustible (burnable) materials; this means that oxygen combines chemically with the other material in a way that increases the chance of a fire or explosion.
This reaction may be spontaneous at either room temperature or may occur under slight heating. Oxidizing liquids and solids can be severe fire and explosion hazards. Care should be taken is storing oxidising chemicals away from flammable chemicals and materials . It is very important that you read the label carefully before use.