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Diss Factsheets

Physical & Chemical properties

Viscosity

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2014
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Test Guideline 114 (Viscosity of Liquids)
Principles of method if other than guideline:
The viscosity of the liquids was measured using a stress-controlled rotational rheometer (Paar-Physica UDS 200) fitted with a concentric cylinder system.
Type of method:
other: stress-controlled rotational rheometer
Specific details on test material used for the study:
Lot #JBKF0002R
Key result
Temp.:
other: 23°C
Parameter:
other: Pa.s
Value:
835

Results:

Sample #

Viscosity at 1 s-1

Viscosity at 10 s-1

Viscosity at 20 s-1

Viscosity at 100 s-1

Temperature

 

Pa-s

Pa-s

Pa-s

Pa-s

°C

Test substance 1

856

850

835

-

23.0

Test substance 2

4.24

4.23

4.23

4.22

60.0

Conclusions:
Under the study conditions, the viscosity of the test substance was determined to be 835 Pa.s (shear rate = 20 s-1) at 23°C.
Executive summary:

A study was conducted to determine the viscosity of the test substance using a stress-controlled rotationl rheometer (method similar to OECD Guideline 114). Samples with low viscosities were measured with a double-gap system whereas high viscosity liquids were measured with a cone plate or single gap device. A few measurements were conducted over a shear rate range between 1 and 100 s-1. When the flow is Newtonian (i.e. the viscosity is independent of shear rate), which is usually the case for acrylate resins, the viscosity is returned at 20 or 100 s-1. The temperature was 23.0 °C and was controlled within 0.1°C. Under the study conditions, the viscosity of the test substance was determined to be 835 Pa.s (shear rate = 20 s-1) at 23°C (Herssens, 2014).

Description of key information

The viscosity was determined according to OECD Guideline 114 (Herssens, 2014).

Key value for chemical safety assessment

Viscosity:
835 mPa · s (dynamic)
at the temperature of:
23 °C

Additional information