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Description of key information

The substance TFA is considered as a Newtonian liquid. Its viscosity is close to water.

Key value for chemical safety assessment

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

Additional information

The viscosity of the test substance TFA was measured according to recognised methods, and under GLP, using a rotary viscometer. At a shear rate varying from 20 to 100 s-1, the viscosity did not vary significantly: 0.9 to 9.0 mPa s at 20°C. At a constant shear rate of 2000 s-1, the viscosity was measured to be 1.8 mPa s at 20°C, and 1.6 mPa s at 40°C. Although these results are below the standard working range of the rotary viscometer (estimated accuracy in this low viscosity range was checked to be ca 14%), the test item can be considered as a low viscous liquid.