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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
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods
Qualifier:
according to guideline
Guideline:
other: DIN 51 562 (kinematic viscosity)
Principles of method if other than guideline:
There are no data available on the testing method for measuring the dynamic viscosity.
GLP compliance:
not specified
Type of method:
other: Ubbelohde-viscometer
Specific details on test material used for the study:
- Name of test material (as cited in study report): sodium N-methyltaurinate
- Substance type: aqueous solution
- Physical state: liquid
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
5.7
Remarks on result:
other: 40 % aqueous solution
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
8.4
Remarks on result:
other: 45 % aqueous solution
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
13.3
Remarks on result:
other: 50 % aqueous solution
Temp.:
20°C
Parameter:
dynamic viscosity (in mPa s)
Value:
22
Remarks on result:
other: 55 % aqueous solution
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
6
Remarks on result:
other: 40 % aqueous solution
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
19
Remarks on result:
other: 50 % aqueous solution
Temp.:
20°C
Parameter:
kinematic viscosity (in mm²/s)
Value:
84
Remarks on result:
other: 62 % aqueous solution
Temp.:
other: 10°C
Parameter:
dynamic viscosity (in mPa s)
Value:
8.26
Remarks on result:
other: 40 % aqueous solution
Temp.:
other: 30°C
Parameter:
dynamic viscosity (in mPa s)
Value:
4.38
Remarks on result:
other: 40 % aqueous solution
Temp.:
40°C
Parameter:
dynamic viscosity (in mPa s)
Value:
3.37
Remarks on result:
other: 40 % aqueous solution
Temp.:
other: 50°C
Parameter:
dynamic viscosity (in mPa s)
Value:
2.26
Remarks on result:
other: 40 % aqueous solution
Conclusions:
The dynamic viscosity of the 40 % aqueous solution is 5.7 mPa s and kinematic viscosity is 6 mm/s² measured at 20 °C.
Executive summary:

The dynamic viscosity of the aqueous solution depends on concentration and temperature. The dynamic viscosity is positively related to concentration of sodium N-methyltaurinate, while dynamic viscosity is negatively related to temperature. The dynamic viscosity of the typically manufactured concentration of 40 % aqueous solution is 5.7 mPa s and the kinematic viscosity is 6 mm/s² (according to DIN 51 562) measured at 20 °C.

Description of key information

The dynamic viscosity of the typically manufactured 40 % aqueous solution is 5.7 mPa s and the kinematic viscosity is 6 mm/s² (according to DIN 51 562) measured at 20 °C.

Key value for chemical safety assessment

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

Additional information