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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:
2012-07-09
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
The study was conducted according to an appropriate national standard method and in compliance with a known quality system (ISO 9001:2008)
Qualifier:
according to
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
Deviations:
no
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:
no
GLP compliance:
no
Other quality assurance:
other: ISO 9001:2008
Type of method:
capillary viscometer (static)
Key result
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
1.68

Results:

Test 1:

Capillary tube: 0

Correction factor: 0.001056

Measured time (s)

Mean value (s)

1590

1576

1584

-

-

1583.3

 

Calculation

Viscosity [mm2/s]

time (mean value) x correction factor = viscosity

1.6720

 

 

Test 2:

Capillary tube: 0

Correction factor: 0.003131

Measured time (s)

Mean value (s)

537

536

536

537

536

536.4

 

Calculation

Viscosity [mm2/s]

time (mean value) x correction factor = viscosity

1.6795

                               

Viscosity at 20°C (mm2/s) = 1.68

Conclusions:
A kinematic viscosity of 1.68 mm2/s at 20°C was determined for the substance using DIN 51562, the result is considered reliable.

Description of key information

Viscosity: 1.68 mm²/s at 20°C (kinematic)  (DIN 51562)

Key value for chemical safety assessment

Viscosity:
1.68 mm²/s (static)
at the temperature of:
20 °C

Additional information

A measured kinematic viscosity of 1.68 mm2/s at 20°C was determined for the substance in accordance with DIN 51562 and in compliance with a known quality system (ISO 9001:2008). The result is considered to be reliable and is selected as key study. This value is supported by a predicted kinematic viscosity of 2.1 mm2/s at 20°C using a validated QSAR estimation method. The supporting data is in good agreement with the key study.

In a secondary source to which reliability could not be assigned, a dynamic viscosity value of 2 mPa.s at 20°C was reported for the substance.