Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Endpoint summary

Currently viewing:

Administrative data

Description of key information

The substance is a liquid as evidenced by the referenced melting point study (mp -33 °C).

Boiling point endpoint is waived as substance decomposes before boiling (SADT is 25 °C).

The relative density of tert-pentyl peroxypivalate, 75 % solution in isododecane is 0.8619 (± 0.0000). Note that the organic peroxide cannot be handled in pure form.

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.

The partition coefficient log Kow value for tert-amyl peroxypivalate is 3.3.

The measured water solubility is 504 mg/L @ 20 °C.

Additional information