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Viscosity

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Reference
Endpoint:
viscosity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2008.06.16, 2008.06.23
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
equivalent or similar to guideline
Guideline:
other: DIN 51562
Deviations:
no
Principles of method if other than guideline:
The method used is adapted from the DIN method 51562 (1999-01) "Ubbelode". The measurement was carried out measuring the time the test material needs to fill the defined distance in the capillary of the UBBELODE viscosimeter.
GLP compliance:
no
Remarks:
Instead: DIN EN ISO 9001: 2000 management system certification (incl. certificate), TUEV NORD CERT GmbH, Germany
Type of method:
capillary viscometer (static)
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
ca. 7.875

Three measurements for each lot were performed at 20°C.

 

measurement

time [s]

viscosity [mm2/s]

Lot23472

1

267.88

 

2

267.95

 

3

267.62

 

Mean value

267.82

7.90

Lot23474

1

262.52

 

2

262.68

 

3

262.60

 

Mean value

262.60

7.85

Mean value of all lots is 7.875 mm2/s. The measured time for all lot differs lower than 0.3 %. The measurements are considered as accurate within the limits of the method.

Executive summary:

In this study the viscosity of the test substance 3 -mercaptopropionic acid has been determined to be 7.875 mm2/s at 20 °C (293.15 K) by using capillary viscosimeter, regarding method described in DIN 51562 as of 1999.

Description of key information

Viscosity at 20 °C:  7.875 mm2/s

Key value for chemical safety assessment

Viscosity:
7.9 mm²/s (static)
at the temperature of:
20 °C

Additional information

In the experimental laboratory study the viscosity of the test substance 3 -mercaptopropionic acid has been determined to be 7.875 mm2/s at 20 °C (293.15 K) by using capillary viscosimeter, regarding method described in DIN 51562 as of 1999.