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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:
August 2011
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Principles of method if other than guideline:
The viscosity of the liquids is measured using a stress-controlled rotational rheometer (Paar-Physica UDS 200) fitted with a concentric cylinder system. Samples with low viscosities are measured with a double-gap (22.25/22.75; 23.5/24.0 mm) system whereas high viscosity liquids are measured with a cone plate or single gap (12.5/13.56 mm) device. A few measurements are 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 is 23.0 °C and is controlled within 0.1°C.
GLP compliance:
no
Type of method:
rotational viscometer (dynamic)
Key result
Temp.:
other: 23.0°C
Parameter:
other: Pa.s
Value:
1 550
Remarks on result:
other: shear rate = 0.1 s-1
Key result
Temp.:
other: 23.0°C
Parameter:
other: Pa.s
Value:
1 550
Remarks on result:
other: shear rate = 1 s-1
Key result
Temp.:
other: 23.0°C
Parameter:
other: Pa.s
Value:
1 530
Remarks on result:
other: shear rate = 10 s-1
Conclusions:
Under the study conditions, the viscosity of the test substance was 1550 Pa.s at 23°C and a shear rate of 1 s-1.
Executive summary:

A study was conducted to determine the viscosity of the test substance using a stress-controlled rotational rheometer. Under the study conditions, the viscosity of the test substance was 1550 Pa.s at 23°C and a shear rate of 1 s-1.

Description of key information

The viscosity was determined using a stress-controlled rotational rheometer fitted with a concentric cylinder system (Boutreau, 2011).

Key value for chemical safety assessment

Additional information

1550 Pa.s at 23°C and a shear rate of 1 s-1.