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Viscosity

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Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
from 2013-07-25 to 2013-09-04
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
capillary viscometer (static)
Temp.:
20°C
Parameter:
other: cSt
Value:
> 300 000
Temp.:
40°C
Parameter:
other: cSt
Value:
> 300 000

At 20°C, the sample was found to be a semi solid and could not be transferred to the viscometer. The sample was then heated and checked at 30°C, 40°C, 50°C and 60°C, but the sample was still found to be too viscous to transfer to the viscometer. After discussions with the client, the viscosity was reported as >300 000 cSt at 20°C and 40°C.

Conclusions:
The viscosity was reported as >300 000 cSt at 20°C and 40°C.
Executive summary:

The viscosity was determined using the capillary method.

At 20°C, the sample was found to be a semi solid and could not be transferred to the viscometer. The sample was then heated and checked at 30°C, 40°C, 50°C and 60°C, but the sample was still found to be too viscous to transfer to the viscometer.

Description of key information

Viscosity (OECD 114) The viscosity is > 300 000 cSt at 20°C and 40 °C.

Key value for chemical safety assessment

Additional information

The viscosity was determined using the capillary method.

At 20°C, the sample was found to be a semi solid and could not be transferred to the viscometer. The sample was then heated and checked at 30°C, 40°C, 50°C and 60°C, but the sample was still found to be too viscous to transfer to the viscometer.