Dodecanoic acid, 1,1'-[1,6-hexanediylbis[nitrilo(2,2-dimethyl-1-propanyl-3-ylidene)]] ester

Viscosity

Link to relevant study record(s)

Reference

Endpoint:

viscosity

Type of information:

experimental study

Adequacy of study:

key study

Study period:

from 09-04-2013-03-05-2013

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Test Guideline 114 (Viscosity of Liquids)

Version / remarks:

adopted 2 Oct 2012

Deviations:

no

Qualifier:

according to guideline

Guideline:

other: EN ISO 12058-1 (2002)

Version / remarks:

2002

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

forced ball viscometer (dynamic)

Key result

Temp.:

20°C

Parameter:

dynamic viscosity (in mPa s)

Value:

68.644

Key result

Temp.:

40°C

Parameter:

dynamic viscosity (in mPa s)

Value:

26.661

All measured values and the corresponding calculation results are given in the following table:

 

Measured Values Viscosity 20 °C

	First Determination 20 °C
	Temperature	Falling Time		Total Time
Measurement		Time [min]	Time [s]	Total Time [s]	Viscosity [mPa*s]
No. 1	20.02	1	10.00	70.00	68.6965
No. 2	20.00	1	9.94	69.94	68.6376
No. 3	20.02	1	10.01	70.01	68.7063
Mean				69.98	68.6801
Standard Deviation				0.04	0.0372
RSD					0.05%
	Second Determination 20 °C
	Temperature	Falling Time		Total Time
Measurement		Time [min]	Time [s]	Total Time [s]	Viscosity [mPa*s]
No. 1	20.02	1	9.75	69.75	68.4511
No. 2	20.02	1	9.94	69.94	68.6376
No. 3	20.00	1	10.04	70.04	68.7357
Mean				69.91	68.6081
Standard Deviation				0.15	0.1446
RSD					0.21%

 

 

Measured Values Viscosity 40 °C

	First Determination 40 °C
	Temperature	Falling Time		Total Time
Measurement		Time [min]	Time [s]	Total Time [s]	Viscosity [mPa*s]
No. 1	40.1	4	34.94	274.94	28.6693
No. 2	40.1	4	34.63	274.63	28.6369
No. 3	40.0	4	34.78	274.78	28.6526
Mean				274.78	28.6529
Standard Deviation				0.16	0.0162
RSD					0.06%
	Second Determination 40 °C
	Temperature	Falling Time		Total Time
Measurement		Time [min]	Time [s]	Total Time [s]	Viscosity [mPa*s]
No. 1	40.1	4	35.00	275.00	28.6755
No. 2	40.0	4	34.81	274.81	28.6557
No. 3	40.0	4	35.03	275.03	28.6786
Mean				274.95	28.6700
Standard Deviation				0.12	0.0124
RSD					0.04%

Results of the single determinations with the respective standard deviation as well as the mean value and the standard deviation of all six individual experiments of both temperatures are presented in the following tables:

 

Results of all determinations at 20 °C

20°C	Experiment 1	Experiment 2	Mean
Determination	Viscosity in mPa*s	Viscosity in mPa*s	Viscosity in mPa*s
1	68.6965	68.4511
2	68.6376	68.6376
3	68.7063	68.7357
Mean	68.6801	68.6081	68.644
sd	0.0372	0.1446	0.051
RSD			0.07%

 

Results of all determinations at 40 °C

40°C	Experiment 1	Experiment 2	Mean
Determination	Viscosity in mPa*s	Viscosity in mPa*s	Viscosity in mPa*s
1	28.6693	28.6755
2	28.6369	28.6557
3	28.6526	28.6786
Mean	28.6529	28.6700	28.661
sd	0.0162	0.0124	0.012
RSD			0.04%

 

 

Conclusions:

The viscosity of the test item was determined to be 68.644 ± 0.051 mPa*s at 20 °C and 28.661 ± 0.012 mPa*s at 40 °C, respectively.

Executive summary:

A study was conducted according to OECD TG 114 and EN ISO 12058-1 (2002) to determine the viscosity of the test item. Using a rolling ball viscosimeter according to Hoeppler, the viscosity was determined in two independent triplicate determinations at 20 °C and 40 °C, respectively. The viscosity of the test item at 20 °C was determined to be 68.644 ± 0.051 mPa *s at 20.00 ± 0.02 °C which is the mean of two values. Precision of the value is given as standard deviation of all six individual measurements. As the measured RSD was 0.07 %, the validity criterion was met. The viscosity of the test item at 40 °C was determined to be 28.661 ± 0.012 mPa *s at 40.0 ± 0.1 °C which is the mean of two values. Precision of the value is given as standard deviation of all six individual measurements. As the measured RSD was 0.04 %, the validity criterion was met. No observations arousing doubts concerning the accuracy of the results and the validity of the study were made.

Description of key information

The viscosity of the test item was determined to be 68.644 ± 0.051 mPa*s at 20 °C and 28.661 ± 0.012 mPa*s at 40 °C, respectively.

Key value for chemical safety assessment

Viscosity:

68.644 mPa · s (dynamic)

at the temperature of:

20 °C

Additional information

A study was conducted according to OECD TG 114 and EN ISO 12058-1 (2002) to determine the viscosity of the test item. Using a rolling ball viscosimeter according to Hoeppler, the viscosity was determined in two independent triplicate determinations at 20 °C and 40 °C, respectively. The viscosity of the test item at 20 °C was determined to be 68.644 ± 0.051 mPa *s at 20.00 ± 0.02 °C which is the mean of two values. Precision of the value is given as standard deviation of all six individual measurements. As the measured RSD was 0.07 %, the validity criterion was met. The viscosity of the test item at 40 °C was determined to be 28.661 ± 0.012 mPa *s at 40.0 ± 0.1 °C which is the mean of two values. Precision of the value is given as standard deviation of all six individual measurements. As the measured RSD was 0.04 %, the validity criterion was met. No observations arousing doubts concerning the accuracy of the results and the validity of the study were made.