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Viscosity

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Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
15 May 2018
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study
Qualifier:
according to
Guideline:
ISO 3219 (Plastics; polymers/resins in the liquid state or as emulsions or dispersions; determination of viscosity using a rotational viscometer with defined shear rate)
Version / remarks:
1994
GLP compliance:
no
Type of method:
rotational viscometer (dynamic)
Key result
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
28.6
Temp.:
40°C
Parameter:
dynamic viscosity (in mPa s)
Value:
177.8
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
26.3
Temp.:
40°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
165.1

Results

Dynamic Viscosity:

Measurement 1: 20°C = 28.6 mPa*s

Measurement 2: 20°C = 28.5 mPa*s

Overall average = 28.6 mPa*s

Measurement 1: 40°C average = 170.0 mPa*s

Measurement 2: 40°C average = 178.5 mPa*s

Overall average = 177.8 mPa*s

Kinematic Viscosity:

The kinematic viscosity is the ratio of the dynamic viscosity to the density of the fluid.

The average kinematic viscosity equals 26.27 mm2/s (at 20°C, D420 = 1.0087) and 165.1 mm2/s (at 40°C, D440 = 1.0719).

Conclusions:
A dynamic viscosity of 28.6 mPa*s (at 20 °C) and 177.8 mPa*s (at 40°C) was determined for test item.
A kinematic viscosity of 26.3 mm2/s (at 20 °C) and 165.1 mm2/s (at 40 °C) was determined for the test item.

Description of key information

The dynamic viscosity of the item was determined to be 28.6 mPa*s at 20 °C and 177.8 mPa*s at 40 °C in accordance with EN ISO 3.219: 1994.

The kinematic viscosity of the item was determined to be 26.3 mm2/s at 20 °C and 165.1 mm2/s at 40 °C.

Key value for chemical safety assessment

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

Additional information