Dodecanoic acid, 2,2-dimethyl-3-oxopropyl ester

Viscosity

Link to relevant study record(s)

Reference

Endpoint:

viscosity

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2014-04-28 to 2014-05-05

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

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:

11.6

Temp.:

40°C

Parameter:

dynamic viscosity (in mPa s)

Value:

6.5

Detailed result
	Table 1: Measured viscosity of Aldehyde L at
	Properties of the ball				Density of Test Item, (g/cm^3)		Falling time (sec)	Dynamic Viscosity (mPa*s)
	Number		2		0.9104		76.03	11.6
							76.15	11.6
	Density, g/cm3		2.229				76.62	11.7
							76.02	11.6
	Constant mPa*sec*cm^3/(g*sec)		0.11595				75.85	11.6
							76.28	11.7
	Mean							11.6
	RSD							0.4 %
Table 2: Measured viscosity of Aldehyde L at 40°C
Properties of the ball				Density of Test Item, (g/cm^3)		Falling time (sec)		Dynamic Viscosity (mPa*s)
Number		1		0.8957		197.06		6.5
						198.60		6.5
Density, g/cm3		2.224				198.12		6.5
						198.78		6.5
Constant mPa*sec*cm^3/(g*sec)		0.02472				197.16		6.5
						197.25		6.5
Mean								6.5
RSD								0.4 %

 

Conclusions:

The dynamic viscosity was determined to be 11.6 mPa*s at 20 °C and 6.5 mPa*s at 40 °C, respectively.

Executive summary:

A study was conducted according to OECD test guideline 114 to determine the dynamic viscosity of the test item using the forced ball viscometer. Therefore the test item was introduced, free of bubbles into the falling tube enclosed by a cylindrical water bath permitting exact thermostatisation with temperature constancy of ± 0.1 °C of the test substance. After the temperature equilibrium was reached, the cylinder was inverted and, using a stopwatch, the time taken for the ball to move over the distance between the ring marks, was recorded. The dynamic viscosity of test item was calculated using the detected falling time, the ball constant and the density difference between the liquid and the ball. The dynamic viscosity was determined to be 11.6 mPa*s at 20 °C and 6.5 mPa*s at 40 °C, respectively. No observations were made which cause doubt on the validity of the outcome of the study.

Description of key information

The dynamic viscosity was determined to be 11.6 mPa*s at 20 °C and 6.5 mPa*s at 40 °C, respectively.

Key value for chemical safety assessment

Viscosity:

11.6 mPa · s (dynamic)

at the temperature of:

20 °C

Additional information

A study was conducted according to OECD test guideline 114 to determine the dynamic viscosity of the test item using the forced ball viscometer. The dynamic viscosity was determined to be 11.6 mPa*s at 20 °C and 6.5 mPa*s at 40 °C, respectively. No observations were made which cause doubt on the validity of the outcome of the study.