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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:
2017-08-31
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Qualifier:
according to
Guideline:
DIN 51562 Part 1 (Viscometry - Measurement of kinematic viscosity by means of the Ubbelohde viscometer - Part 1: Viscometer specification and measurement procedure)
Deviations:
not specified
GLP compliance:
no
Other quality assurance:
other: ISO 9001:2008
Type of method:
other: Ubbelohde
Key result
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
3.43

Results

Test: 1

Capillary tube: I 

Correction factor: 0.009860

Measured time [s]

Mean value [s]

347

347

347

347

347

347

Test: 2

Capillary tube: I  

Correction factor: 0.009665

Calculation

Viscosity [mm2/s]

time (mean value) x correction factor = viscosity

3.4407

 

Viscosity at 20 °C [mm2/s]

3.43

Conclusions:
A viscosity value of 3.43 mm²/s at 20°C was obtained using an accepted experimental method. The result is considered to be reliable.

Description of key information

Viscosity: 3.43 mm²/s at 20°C (DIN 51562)

Key value for chemical safety assessment

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

Additional information

A measured kinematic viscosity value of 3.43 mm²/s at 20°C was obtained for the substance using a relevant test method and in compliance with a known quality system (ISO 9001:2008). The result is considered to be reliable and is selected as key study.

The key study is supported by a predicted kinematic viscosity of 3 mm²/s (static) at 20°C using a validated QSAR estimation method.

In available secondary sources to which reliability could not be assigned, viscosity values of 3.65 mPa · s (dynamic) at 20°C and 3 cSt (static) at 25°C were reported.