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Description of key information

The viscosity of Benzyltoluene was determined according to OECD guideline 114.
Using a rolling ball viscosimeter, a viscosity of
3.618 ± 0.018 mPa * s
at 20 °C was measured, this value is the mean of two independent triplicate determinations with their standard deviation. Good correlation of the two determinations was given (relative standard deviation was 0.50 %). All measurements were performed at 20.00 ± 0.04 °C.

Additionally a viscosity of
2.301 ± 0.003 mPa * s at 40.00 ± 0.02 °C
was measured.

Key value for chemical safety assessment

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

Additional information

The conversion between dynamic and kinematic viscosity is described as follows:

dynamic viscosity (mPa*s) = kinematic viscosity (mm2/s) x density (g/cm3)


For Benzyltoluene  the kinematic viscosity at 40 °C is 2.303 mm2/s.

A substance is classified in Category 1:

(a) based on reliable and good quality human evidence


(b) if it is a hydrocarbon and has a kinematic viscosity of 20.5 mm2/s or less, measured at 40 °C .

According to these criteria Benzyltoluene has to be classified into Category 1 for aspiration hazard. No further testing is required.