Diethyl carbonate

Viscosity

Link to relevant study record(s)

Reference

Endpoint:

viscosity

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Study plan 2012-01-13, Performance of study 2012-01-31, Draft report 2012-03-16, Final report 2012-03-22

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Study performed according to official OECD TG method and GLP with certificate.

Qualifier:

according to guideline

Guideline:

OECD Test Guideline 114 (Viscosity of Liquids)

Qualifier:

according to guideline

Guideline:

other: EN ISO 12058-1:2002

GLP compliance:

yes (incl. QA statement)

Type of method:

other: Rolling ball viscosimeter (following Hoeppler)

Temp.:

20°C

Parameter:

dynamic viscosity (in mPa s)

Value:

0.837

Measured values of viscosity:

First determination:

Measurement	Temperature [° C]	Falling time [s]	Total time [s]	Viscosity [mPa*s]
No. 1	19.96	55.87	55.87	0.8486
No. 2	20.10	55.78	55.78	0.8472
No. 3	20.04	55.72	55.72	0.8463
Mean			55.79	0.8474
Standard deviation			0.08	0.0011
relative SD				0.14 %

Second determination:

Measurement	Temperature [° C]	Falling time [s]	Total time [s]	Viscosity [mPa*s]
No. 1	19.96	54.93	54.93	0.8343
No. 2	19.95	54.69	54.69	0.8307
No. 3	20.00	55.15	55.15	0.8376
Mean			54.92	0.8342
Standard deviation			0.23	0.0035
relative SD				0.42 %

Third: determination:

Measurement	Temperature [° C]	Falling time [s]	Total time [s]	Viscosity [mPa*s]
No. 1	19.96	54.65	54.65	0.8300
No. 2	20.00	54.87	54.87	0.8334
No. 3	20.01	54.72	54.72	0.8311
Mean			54.75	0.8315
Standard deviation			0.11	0.0017
relative SD				0.21 %

Fourth determination:

Measurement	Temperature [° C]	Falling time [s]	Total time [s]	Viscosity [mPa*s]
No. 1	19.96	55.38	55.38	0.8411
No. 2	19.97	54.78	54.78	0.8320
No. 3	20.00	54.87	54.87	0.8334
Mean			55.01	0.8355
Standard deviation			0.32	0.0049
relative SD				0.59 %

Results of all determinations:

	Experiment 1	Experiment 2	Experiment 3	Experiment 4	Mean
Determination	Viscosity [mPa*s]	Viscosity [mPa*s]	Viscosity [mPa*s]	Viscosity [mPa*s]	Viscosity [mPa*s]
1	0.8486	0.8343	0.8300	0.8411
2	0.8472	0.8307	0.8334	0.8320
3	0.8463	0.8376	0.8311	0.8334
Mean	0.8474	0.8342	0.8315	0.8355	0.837
Standard deviation	0.0011	0.0035	0.0017	0.0049	0.007
relative SD	0.14 %	0.42 %	0.21 %	0.59 %	0.82 %

The mean of each series of four measurements was calculated. The allowed maximum deviation of the means of two experiments for the used borosilicate glass was 2.0 %. As the measured relative standard deviation was 0.82 %, the validity criterion was met.

Conclusions:

The viscosity of the test substance diethyl carbonate was determined according to OECD Test Guideline 114 (Viscosity of Liquids). At all measurements, the falling time was smaller than 60 sec (minimum falling time). However, the measurements can be considered valid because the measured viscosity was within the measuring range of the used ball (borosilicate glass). The viscosity of the test item diethyl carbonate was calculated as 0.837+/-0.007 mPa*s at 20.0 °C, which was the mean of four experiments and 12 single values. As the measured relative standard deviation was 0.82 %, the validity criterion for the used ball was met (maximum relative SD 2.0 %).

Description of key information

The dynamic viscosity of the test substance diethyl carbonate was determined to be 0.837 +/- 0.007 mPa*s at 20.0 °C

Key value for chemical safety assessment

Viscosity:

0.837 mPa · s (dynamic)

at the temperature of:

20 °C