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EC number: 249-530-6
CAS number: 29240-17-3
Derived Antoine equation for Trigonox 125 -C75:
log p (mbar) = 9.9677-1583.75/(T-149.23) (T in K)
Derived Antoine equation for isododecane solvent control (from from Boerdijk, 2000, PCS200000009):
log p (mbar) = 7.036-1515.1/(T-74.70) (T in K)
At ca. 35 °C, the vp of Trigonox 125 -C75 is 100 Pa.
At ca. 35 °C, the vp of the isododecane used is 345 Pa.
As Trigonox 125-C75 is 75 % tert-amyl peroxypivalate and 25 % isododecane, the vp of tert-amyl peroxypivalate in the Trigonox 125 -C75 can be calculated as (100 - 345/4) Pa = ca. 14 Pa
An experimental study was conducted to determine the vapour pressure of the test substance. As the pure tert-amyl peroxypivalate cannot be handled in its pure form, the experiments were conducted with commercially marketed Trigonox 125-C75 with a composition of 75 % tert-amyl peroxypivalate and 25 % isododecane. The vapor pressure of commercially marketed Trigonox 125-C75 at 35 °C is 100 Pa. From this, the vapor pressure of the contained tert-amyl peroxypivalate is calculated as 14 Pa @ 35 °C.
The vapor pressure of commercially marketed Trigonox 125-C75 at 35 °C is 100 Pa (contains 25 % isododecane). From this, the vapor pressure of the contained tert-amyl peroxypivalate is calculated as 14 Pa @ 35 °C.
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