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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
Study period:
2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Qualifier:
no guideline followed
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.
GLP compliance:
no
Type of method:
rotational viscometer (dynamic)
Temp.:
other: 23.0°C
Parameter:
other: Pa.s
Value:
1.28
Remarks on result:
other: shear rate = 1/sec
Temp.:
other: 23.0°C
Parameter:
other: Pa.s
Value:
1.27
Remarks on result:
other: shear rate = 10/sec
Temp.:
other: 23.0°C
Parameter:
other: Pa.s
Value:
1.27
Remarks on result:
other: shear rate = 100/sec
Conclusions:
Under the study conditions, the viscosity of di-TMPTTA was 1.28 Pa.s at 23°C and a shear rate of 1 to 100 per sec.
Executive summary:

A study was conducted to determine the viscosity of di-TMPTTA using a stress-controlled rotational rheometer. A few measurements are conducted over a shear rate range between 1 and 100 sec-1. The temperature is 23.0°C and is controlled within 0.1°C. Under the study conditions, the viscosity of the test substance was 1.28 Pa.s at 23°C and a shear rate of 1 to 100 per sec (Jeuniaux, 2012).

Description of key information

Viscosity was determined using a stress-controlled rotational rheometer (Jeuniaux, 2012).

Key value for chemical safety assessment

Viscosity:
1 280 mPa · s (dynamic)
at the temperature of:
20 °C

Additional information

1.28 Pa.s at 23°C