DBPH(101)
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Chemical name
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2,5-Dimethyl-2,5-bis(tert-butyl peroxy) hexane
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Molecular formula
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C16H34O4
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Molecular weight
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290.44
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CAS NO.
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78-63-7
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UN NO.
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3103
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CN NO.
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52005
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EINECS.
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201-128-1
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Brief lntroduction
● DBPH is a low volatility, yellowish liquid, dialkyl peroxide for cross linking of elastomers (silicone rubber,
EPDM, PE etc.).
● Melting Point 8 °C, relative density 0.865, refractive index 1.4185 (28℃)，flash point: closed/36℃，
open/58℃, self-accelerating decomposition temperature /80℃. Not soluble in water, soluble in alcohols,
esters, ethers, hydrocarbons and organic solvents, has a special smell. Active oxygen Content 11.02%.
Half Life Data
● Activation Energy.............. 36.0kcal/mole
● 10hr, Half Life Temp.............. 118℃
● 1hr, Half Life Temp............... 138℃
● 1min, Half Life Temp.............. 177 ℃
Specification
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Assay
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≥94%
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Color
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Max.90Hazen
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Fe
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Max.0.0003%
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Application
● As cross-linking agent for many polymers, such as polyethylene(LDPE, HDPE), ethylene/vinylacetate copolymer(EAM), ethylene/propylene/(diene)rubber(EPM,EPDM), silicone rubber (VMQ) and fluor elastomers.
● Corsslinking temperature: above,170 °C, the amount of 1.2-2.5% (depending on different types of elastomers required).
Package and Storage
● 20kg or 25kg net PE drum.
● 10-30 °C stored under shadow, good air circulation. Transportation, exposure and strenuous exercise should be avoided. Refrain from heat and acid, reducing agent such as during storage or shipment.
Formulation
● DBPH(101)-C8BS-45ps (It is a yellowish paste ,also used for crosslinking of silicone rubbers.)
● DBPH(101)-60D-pd (It is a white powder, also used for crosslinking of silicone rubbers.)
