Ammonium N-methyl-N-(1-oxododecyl)glycinate

Viscosity

Link to relevant study record(s)

Reference

Endpoint:

viscosity

Type of information:

experimental study

Adequacy of study:

key study

Study period:

7 Jan 2016 to 8 Mar 2016

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Test Guideline 114 (Viscosity of Liquids)

Deviations:

no

Qualifier:

according to guideline

Guideline:

DIN 53015 (Viscometry - Measurement of viscosity by means of the rolling ball viscometer by Höppler)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks:

Landesamt für Umwelt, Wasserwirtschaft und Gewerbeaufsicht, Mainz, Germany

Type of method:

rolling ball viscometer (dynamic)

Temp.:

20°C

Parameter:

dynamic viscosity (in mPa s)

Value:

38.577

Temp.:

40°C

Parameter:

dynamic viscosity (in mPa s)

Value:

29.342

Individual Results

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 are presented in the following tables:

Results of all Determinations at 20°C

				Experiment 1			Experiment 2			Mean
	Determination			Viscosity in mPa*s			Viscosity in mPa*s			Viscosity in mPa*s
1			38.6819			38.5625
2			38.5326			38.5326
3			38.5923			38.5625
Mean			38.6023			38.5525			38.577
Standard Dev.			0.0751			0.0172			0.035
RSD			0.19%			0.04%			0.09%

RSD = Relative standard Deviation

Results of all Determinations at 40°C

				Experiment 1			Experiment 2			Mean
	Determination			Viscosity in mPa*s			Viscosity in mPa*s			Viscosity in mPa*s
1			29.4766			29.2279
2			29.3871			29.2975
3			29.3871			29.2776
Mean			29.4169			29.2677			29.342
Standard Dev.			0.0517			0.0359			0.106
RSD			0.18%			0.12%			0.36%

RSD = Relative standard Deviation

Final Results

The viscosiy of test item was determined as 38.577 ± 0.035 mPa * s at 20.00 ±

0.06 °C and as 29.342 ± 0.106 mPa * s at 40.0 °C.

 

Both values are the means of two triplicate determinations ± standard deviation for each temperature.

As the measured RSDs were 0.09 % for the determination at 20 °C and 0.36 % for the determination at 40 °C, the validity criterion for ball no. 3 is met for both determinations. Measurements were performed at 20.00 ± 0.06 °C and 40.0 °C respectively. No observations arousing doubts concerning the accuracy of the results and the validity of the study were made.

Description of key information

Viscosity is 38.577 mPa*s at 20 °C (OECD 114, dynamic method, rolling ball).

Viscosity is 29.342 mPa*s at 40 °C (OECD 114, dynamic method, rolling ball).

Key value for chemical safety assessment

Viscosity:

38.577 mPa · s (dynamic)

at the temperature of:

20 °C