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Physical & Chemical properties

Viscosity

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Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
16/07/2009
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
other: CIPAC method MT 22 1994, reprinted 2007
Deviations:
no
Principles of method if other than guideline:
The viscometer is charged with sample to the upper charging mark with precaution, so that the walls above the mark are not made wet by sample. Sample is then allowed to flow in an unbroken column through the capillary to about 5 mm below the lower charging mark. The
flow is stopped by closing the timing tube and more sample added to make up to the mark. The viscometer is then allowed to attain temperature equilibrium, and then the timing tube is opened to allow the sample to flow to the lower charging mark. The tube is closed again
and the upper level of the sample is adjusted by adding or removing sample.

The timing tube is opened to allow the liquid to flow under its own head. The time, to within 0.2 seconds, is measured as the sample transverse the tube from the bottom of the lower timing mark to the upper timing mark. Liquid surface is taken as the uppermost portion of the advance liquid.

The viscometer is cleaned with a suitable solvent, dried, then refilled and flow time measurement is repeated. The difference between the repeated measurements must not be more than 0.2 seconds.
GLP compliance:
yes
Type of method:
capillary viscometer (static)
Key result
Temp.:
other: 80°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
66

Result : Kinetic Viscosity = 66 cSt @ 80°C

Conclusions:
Result : Kinetic Viscosity = 66 cSt @ 80°C

Description of key information

Kinematic Viscosity = 66 cSt @ 80°C

Key value for chemical safety assessment

Viscosity:
66 mm²/s (static)
at the temperature of:
80 °C

Additional information