A question is asked, what is the Flash Point of a flammable liquids? This can be simply define as the lowest temperature at which the vapours given off by at which point a liquid will ignite when exposed to a source of ignition. That is to say the lowest temperature at which the vapours will ignite.
Please note that Class 4 products are separated into 3 divisions. They all have something in common – they ignite easily and they have fire hazards that are hard to control. Examples include; Molten Sulphur, Calcium Resinate and Calcium Carbide. Calcium carbide in packing Group “I” is forbidden for transport on a passenger–carrying vehicle such as a bus.
Remember that a fire needs heat, fuel and oxygen in order to burn. Class 5 materials can provide oxygen to increase the intensity of a fire. The symbol is a flame supported by an “O” for oxygen. It’s not quite the same as the flame symbol you’ve seen on other safety marks.
There are two divisions – 5.1 Oxidizers and 5.2 Organic peroxides. Oxidizer contain large amounts of available oxygen that will feed a fire. Organic peroxides are unstable and reactive. Combined with other materials they can be dangerous.
The way Class 6 products can harm you is by poisoning or infecting you. Materials in 6.1 are Toxic when they’re swallowed, inhaled or absorbed through the skin. They’re separated into packing groups depending on how toxic they are.
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