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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:
2012-02-22 - 2012-03-15
Reliability:
1 (reliable without restriction)
Qualifier:
no guideline followed
Principles of method if other than guideline:
Test Method
The viscometer is charged with sample to the upper charging mark with precaution, so that the walls above the mark are not made wet by sample. Sample is then allowed to flow in an unbroken column through the capillary to about 5 mm below the lower charging mark. The flow is stopped by closing the timing tube and more sample added to make up to the mark.
The viscometer is then allowed to attain temperature equilibrium, and then the timing tube is opened to allow the sample to flow to the lower charging mark. The tube is closed again and the upper level of the sample is adjusted by adding or removing sample.
The timing tube is opened to allow the liquid to flow under its own head. The time, to within 0.2 seconds, is measured as the sample transverse the tube from the bottom of the lower timing mark to the upper timing mark. Liquid surface is taken as the uppermost portion of the advance liquid.
The viscometer is cleaned with a suitable solvent, dried, then refilled and flow time measurement is repeated. The difference between the repeated measurements must not be more than 0.2 seconds.
The kinetic viscosity of the specimen for each run is then obtained from the expression
Kinetic viscosity = Ct (cSt)
GLP compliance:
yes (incl. QA statement)
Type of method:
other: Kinetic viscosity (Viscometer, Thermometer and stop watch).
Specific details on test material used for the study:
- Batch n°: PFW090017
- Date CoA: 27.10.2011
- Water content: 0.12%
- Test Substance Name Jeffamine EDR-176
- Chemical Name 3,3-etheylenedioxybis(propylamine)
- CAS number 2997-01-5
- Batch Number PFW090017
- Description Colourless liquid
- Molecular Formula C8H20N2O2
- Molecular Weight 176 g.mol-1
Key result
Temp.:
20°C
Parameter:
other: kinetic viscosity in cSt
Value:
7.84
Remarks on result:
other: value is the mean of 2 runs
Key result
Temp.:
40°C
Parameter:
other: kinetic viscosity in cSt
Value:
4.26
Remarks on result:
other: value is the mean of 2 runs

Full test results:

 Run Temperature in °C  Viscometer size  Calibration constant  Time (min)  Time (sec)  Viscosity (cSt) 
 1  20  2  0.01  13.03.00 783.00  7.830 
 2  20  2  0.01  13.04.98 784.98  7.850 
 3  40  2  0.01  7.05.86 425.86  4.259 
 4  40  2  0.01  7.05.91 425.91  4.259 

At 20°C 7.84 cSt (mean of 2 runs)

At 40°C 4.26 cSt (mean of 2 runs)

Conclusions:
At 20°C 7.84 cSt (mean of 2 runs)
At 40°C 4.26 cSt (mean of 2 runs)
Executive summary:

The viscosity was determined to be:

At 20°C 7.84 cSt (mean of 2 runs)

At 40°C 4.26 cSt (mean of 2 runs)

Description of key information

At 20°C 7.84 cSt (mean of 2 runs)

At 40°C 4.26 cSt (mean of 2 runs)

Key value for chemical safety assessment

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

Additional information