The vast majority of organic peroxide is colorless to pale yellow liquid, or a white powder state to the crystalline state of the solid. Generally has a weak acid, the majority is not soluble in water, soluble in the adjacent benzene two formic acid and two methyl ester and other organic solvents, is a kind of unstable flammable and explosive compounds.

In the field of high polymer material, organic peroxide used as free radical polymerization caused by agent, grafting reaction triggered agent, cross-linking agent of rubber and plastics, unsaturated polyester curing agent and preparing polypropylene spinning in the molecular weight and molecular weight distribution of regulators. Organic peroxide is a free radical source for use in the following applications: free radical polymerization and co polymerization initiator for vinyl and vinyl monomers; curing agent for thermosetting resin; crosslinking agent of elastomer and polyethylene.

In addition to the polymer material industry, the organic peroxide as photoinitiator and sensitizer for the film industry, for photosensitive polymeric materials, photosensitive resin, etc., are also used in the production of epoxy resin; medical materials, organic peroxide and drug composition of initiator, for synthetic drug sustained release drug delivery matrix, such as beads, pellets, membrane; organic synthesis, organic peroxide mainly used as oxidant and oxidant. In addition, organic peroxide is also used in the disinfection of medical equipment and food, textiles, paper and other industrial bleaching agents, bleaching agents, fungicides, cleaning agents, etc..

The decomposition temperature of an organic peroxide in the effective rate determines its use. Other important factors are cost, solubility, safety. The types of free radicals, the necessity of freezing storage and transportation, the compatibility with the production system, the influence on the product and the ability to be activated. Organic peroxide can be controlled at a high temperature or at room temperature for a certain rate of decomposition to generate reactive free radicals.

All organic peroxide is thermally unstable, and it is accelerated by the increase of temperature. The commonly used method for quantitative determination of organic peroxide reactivity is to determine the half-life of a certain amount of peroxide at a certain temperature, the time required for the decomposition of a certain amount of time. Now, the half-life data for organic peroxide in the product can be obtained in a computer floppy disk. A computer menu program can be used to select the appropriate peroxide for a polymerization or process condition.

These free radicals can be added to the unsaturated vinyl monomers such as: styrene, vinyl chloride and methyl acrylic acid methyl ester induced polymerization. Certain radicals also attack the polymer such as PE to generate free radicals in the chain. When two such polymers are combined together, they form a crosslinked structure.