Triethyl phosphonoacetate

Viscosity

Link to relevant study record(s)

Reference

Endpoint:

viscosity

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 16 December 2011 to 3 September 2012

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

Study conducted in compliance with international and OECD standard guidelines under GLP conditions. The study report was well documented with all mandatory information included.

Qualifier:

according to guideline

Guideline:

OECD Test Guideline 114 (Viscosity of Liquids)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks:

2011-08-31

Type of method:

capillary viscometer (static)

Temp.:

20°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

5.2

Temp.:

40°C

Parameter:

kinematic viscosity (in mm²/s)

Value:

3.08

Calibration check:

The results are shown in the following table:

Determination	Temperature (°C)	Time (s)	Viscosity (mm²/s)	Mean Viscosity (mm²/s)	Certified Viscosity Standard Value (mm²/s)
A	25.0 ± 0.5	514	4.89	4.90	4.92
B		516	4.91

Test item determinations:

The results are shown in the following table:

Determination	Temperature (°C)	Time (s)	Viscosity (mm²/s)	Mean Viscosity (mm²/s)
A	20.0 ± 0.5	547	5.21	5.20
B		546	5.20
A	40.0 ± 0.5	323	3.08	3.08
B		323	3.08

Conclusions:

The viscosity of the test item is 5.20mm²/s at 20°C and 3.08mm²/s at 40°C.

Executive summary:

The determination was carried out using a capillary viscometer procedure, according to Method 114 of OECD Guidelines for Testing of Chemicals, 12 May 1981 and according to GLP. No deviation from the guideline was observed.

The kinematic viscosity was determined by measuring the time of flow for substance through a capillary of know dimensions (U-tube).

The calibration check was performed in duplicate at 25 °C. The viscometer is considered valid for use, because the experimental values obtained for the viscosity standard are within ± 4% of the certified value.

The viscosity of the test item is 5.20 mm²/s at 20°C and 3.08 mm²/s at 40°C.

Description of key information

Experimental value of viscosity for the test item at 20°C: 5.20 mm²/s

Experimental value of viscosity for the test item at 40°C: 3.08 mm²/s

Key value for chemical safety assessment

Viscosity:

5.2 mm²/s (static)

at the temperature of:

20 °C

Additional information

The determination was carried out using a capillary viscometer procedure, according to Method 114 of OECD Guidelines for Testing of Chemicals, 12 May 1981 and according to GLP. No deviation from the guideline was observed.

The viscometer is considered valid for use, because the experimental values obtained for the viscosity standard are within ±4% of the certified value.