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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Viscosity

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Description of key information

Under the conditions of the study , the obtained viscosity for TBPIB (at 20°C) was 1.4 mPas.

Key value for chemical safety assessment

Viscosity:
1.4 mPa · s (dynamic)
at the temperature of:
20 °C

Additional information

The viscosity (dynamic viscosity) of the test susbstance tert-butylperoxyisobutyrate (TBPIB) 75 % in isododecane was examined by an Ubbelohde viscometer in three separate measurements at 20°C. An average of the time measured (the time it takes for the liquid to pass between two marked points) was considered for the viscosity calculation. Thus, the viscosity result obtained for TBPIB 75 % in isododecane was 1.4 mPa.s.