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Some hazardous characters of organic peroxides
Editor:tanjias  Post Time:2009-09-10  Click:

Organic peroxides can be severe fire and explosion hazards.

Organic peroxides are available as solids (usually fine powders), liquids or pastes. Some materials, such as water, odourless mineral spirits, and some phthalate esters do not react with organic peroxides and are often used to dilute them. The diluted mixt-ures or formulations are less likely to explode when exposed to heat or physical shock than the undiluted organic peroxide. Dilution makes the unstable peroxides safer to pr-oduce, handle, and use. We use the term "organic peroxide" to refer to both undiluted and diluted organic peroxides, unless otherwise specified. Check the supplier labels on chemical product containers.

Most undiluted organic peroxides can catch fire easily and burn very rapidly and int-ensely. This is because they combine both fuel (carbon) and oxygen in the same compo-und. Some organic peroxides are dangerously reactive. They can decompose very rapidly or explosively if they are exposed to only slight heat, friction, mechanical shock or contamination with incompatible materials.

Organic peroxides can also be strong oxidizing agents. Combustible materials contami-nated with most organic peroxides can catch fire very easily and burn very intensely (i.e., deflagrate). This means that the burn rate is very fast: it can vary from 1m/sec to hundreds of metres per second. Also the combustion rate increases as the pressure increases and the combustion (or reaction) zone can travel through air or a gaseous medium faster than the speed of sound. However, the speed of combustion in a solid medium does not exceed the speed of sound.

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