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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
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Qualifier:
according to
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
Principles of method if other than guideline:
A tube was placed in a water bath set at a temperature of 38°C and allowed to stabilise for 10 minutes.
After temperature stabilisation is complete, the rubber bung on the tube was removed to allow the liquid sample to
flow. A stop watch was used to time the flow between the graduation marks below and above the
bulbous section of the tube.
GLP compliance:
no
Type of method:
flow cup (static)
Specific details on test material used for the study:
Batch Number KB17030481
Key result
Temp.:
other: 38 C
Parameter:
kinematic viscosity (in mm²/s)
Value:
ca. 48
Conclusions:
A quality control sample of MK92K was required to undergo a Viscosity
of Liquids assessment using a U-tube method to aid REACH registration of the substance.

Description of key information

 A viscosity assessment of MK92K has shown repeatable results (Table 1). The average viscosity of MK92K was 47.9 cSt at 38°C.

Key value for chemical safety assessment

Viscosity:
47.9 mm²/s (static)
at the temperature of:
38 °C

Additional information

MK92K does not contain hydrocarbons at a concentration considered to lead to toxicity by aspiration