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Viscosity

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Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2010-04-21
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reference:
Composition 1
Qualifier:
according to
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
GLP compliance:
no
Type of method:
rotational viscometer (dynamic)
Test material information:
Composition 1
Temp.:
40°C
Parameter:
dynamic viscosity (in mPa s)
Value:
ca. 19.1
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
ca. 55.9

Individual Test Results.

A value of 19.58 mPa.s at 20°C was obtained for the calibration standard, which is within the recommended range of ±5%, and therefore the instrument was deemed suitable for use.

At 20°C, the behaviour of the test substance was found to be Newtonian over the measured shear range of 10 to 500 1/s.

At 40°C, the behaviour of the test substance was found to be Newtonian over the measured shear range of 10 to 500 1/s.

 

ASG Ref.

Viscosity mPa.s

Temperature

Obtained results

Mean (1 dec.place)

10423676

20 °C

55.93

55.9

55.79

40°C

19.1

19.5

19.05

Conclusions:
The viscosity of the substance was 55.9 mPa·s at 20 °C and 19.1 mPa·s at 40°C.
Executive summary:

The viscosity of the test substance was measured at both 20°C and 40°C according to OECD guideline no. 114 (rotational viscometer method) using a Bohlin CS50 controlled stress Rheometer. Determination for both temperatures was done in duplicate. The viscosity of the test substance was 55.9 mPa·s and 19.1 mPa·s at 20°C and 40°C, respectively.

Description of key information

The viscosity of Isopentyl p-methoxycinnamate was 55.9 mPa · s (dynamic).

Key value for chemical safety assessment

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

Additional information

The viscosity of the test substance was measured at both 20°C and 40°C according to OECD114 (rotational viscometer method) using a Bohlin CS50 controlled stress rheometer.

A value of 19.58 mPa x s at 20°C was obtained for the calibration standard, that was within the recommended range of ±5%, and therefore the instrument was deemed suitable for use.

Mean values for the viscosity of the test substance of 55.9 mPa x s (single values: 55.93 mPa x s and 55.79 mPa x s) and 19.1 mPa x s (single values: 19.20 mPa x s and 19.05 mPa x s) were obtained at 20°C and 40°C, respectively.

The behaviour of the test substance at both 20°C and 40°C was found to be Newtonian over the measured shear range of 10 to 500 1/s.