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Safety information

Organic peroxide as curing agents

Organic peroxide could be decomposed into free-radicals by heating, and then these free-radicals would produce active-parts by reactive with polymer backbone, each of two active-parts would lead to strong bonding between polymer backbone, so that polymer achieved a good mechanical performance, especially good heating-resistance and excellent compression set. Organic peroxide could be more wide used at polymer's crosslinking (include insaturated polymer and saturated polymer such as polyethylene) vs sulfur cure. The double carbonate bond in molecular structure could produce strong curing power through organic peroxide, so we could make the best of the crosslinking ability of organic peroxide to cu ring polymer.

★Peroxides (+ coagents) cure systems give:

○Simple recipes and compounding.
○Higher manufacture temperature.
○Excellent compression set at higher temperatures.
○Act as co-crosslinking agent for both saturated and insaturated rubber.
○Crosslinking products will not lead to color change by touching with metal or PVC.
○Act as co-crosslinkg agent for rubber, polyethylene and other polyolefi
○ No any extracts from its finished-goods.
○ No premature crosslinking (Scorch).
○ Rapid crosslinking without reversible.
○ Most organic peroxide will not lead to blooms.
○ Finished-goods no staining.
○ Good heating-resistance.


★Crosslinkable polymer materials:

○ABS Acrylonitrile-butadiene-styrene
○AU-EU Polyurethane rubber
○BR Butadiene rubber
○CM Chlorimated polyethylene polymer
○CR Chloroprene rubber
○CSM Chlorosulphonated polyethylene
○EBA Ethylene-butylene-acrylate co-polymer
○EPM Ethylene-propylene co-polymer
○EPDM Ethylene-propylene-diene ter-polymer
○FPM Vinylidine fluoride and hexafluoropropylene copolymer
○EVA Ethylene-vinyl acetate copolymer
○HNBR Hydrogenated nitrile rubber
○IR Polyisoprene rubber
○NR Natural rubber
○PE Polyethylene
○POE Polyolefine
○Q Silicone rubber
○ SBR Styrene-butadiene rubber
○T Polysulphide rubber
○ EEA Ethylene-ethylacrylate copolymer

★Non-crosslinkable polymer materials:

○ACM Ethylene acryl rubber
○ CIIR Choroprene-isoprene isobutene rubber
○ CO Epichlorohydrin rubber
○ ECO Epichlorohydrin polymer
○ IIR lsoprene isobutene rubber
○ PB Polybutene-l
○ PIB Polyisobutylene
○ PVC Polyvinylchloride
○ PP polypropylene

Our specially technician with rich experience and weH-trained would support you to determine the best one for your formula among our organic peroxide curing agents, and will give suggestions about how to handle and store it, also safety conditions.


★ Half-Iife:

The most important character of the polymerization initiator is the rate of decomposition, generally it is indicated by the half-life (tl/2). This is the time required to decomposite the initiator at a given temperature by 50%, exception the hydroperoxide,the half life is determined by differential thermal analysis (DTA) of solutions of initiator in monochlorobenzene. The dates of hydrodynamic of hydroperoxide in the monochlorobenzene are determined by
the determination of active oxygen's content. In this product catalog lists the temperatures at which half-lives are O.1h 1.Oh and 10h.

The half-life can also be calculated by the Arrhenius formula: The remain content of the initiator at
anytime can be calculated by the
following formula:

★Tem: Emergency Temperature.

Tem is derived from the SADT. Tem is the temperatures at which the emergency actions have to be started. Consumer have to be informed about it.


Tc can also be derived from SADT, which is the maximum temperature with safe transport. The carrier has to know the Tc. Both Tem and Tc are related to safety and have nothing to do with quality. Our recommended storage temperature was printed on the package labels.

★SADT: Self-Acceleration Decomposition Temperature.

SADTis thelowest temperature at which peroxide starts to decompose in the firm package that suits for transport. According to the United Nations Economic and Social Council's Report by the Committee of Experts on the Transport of Dangerous Goods, the transport Temperature is derived from the SADT.

★Ts: storage temperature.

Ts(max) is the highest recommended storage temperature at which no loss of active oxygen is detectable over a period of three months after delivery.


The package of all our organic peroxide conforms to the standard of the second-class dangerous goods. On the packages of the liquid peroxide, there are air holes to reduce pressure for fear of the rising ofthe pressure caused by the composition of the product.


All of the transportable peroxides were numbered according to the classification rules of the proposition of experts on the Transport of dangerous goods.

★Notice for safe handling organic peroxides

1.) Peroxide flammable:it should be stored in shady and cool place, faraway from heat source and fire, forbid to place the product accelerators or other flammable materials. Storage the product strictly at the storage temperature indicated on the labe.
2.) The danger of explosion: absolutely forbid to mingle the peroxides with accelerators, it must be added to the resin respectively.
3.) Peroxides must be packaged in original containers. It will decompose violently if contact with stainless steel, dirt, accelerators or other chemical materials.
4.) Wear the goggles and protective gloves while handling the peroxides, forit may cause irritation to eyes and skin even ifitwere diluted.

★Emergency actions for accidents

Eyes:lf eyes contact with the peroxides, flush with large amounts ofwaterforatleast 15 min immediately, get medical attention if necessary.
Mouth: If swallowed, drink water with carbon flakes and get prompt medical attention.
Skin: Take off all contaminated clothing immediately and flush the skin with larger amounts ofwater, then wrap with the sterilized bandage.
Spill: Spill can be absorbed by inert material, such as Vermiculite or clean sand, then handling it according to the prescription of the management method of the waste chemical material.
Fire: For small fires: with water or foam, can extinguish the fire. For large fires: keep away 10-15 meters from the fire, fighting with watergun and inform the fire brigade to help.

The information contained here is to the best of our knowledge accurate, but since the circumstance and conditions in which it may be used are beyond control, we do not accept liability any loss or damage.