3-mercaptopropionic acid

Viscosity

Link to relevant study record(s)

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 [mm^2/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.