Tall oil, reaction products with ethanolamine

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

04 February - 02 April 2015

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

other: gas comparison pycnometer

Type:

density

Density:

974 kg/m³

Temp.:

20 °C

Key result

Type:

relative density

Density:

0.974

Temp.:

20 °C

CALIBRATION

- Pressure readings and the calculated volume for the reference and sample cells are shown in Table 3.5 (attached).

- As the reference cell volume and sample cell volume were within the defined tolerances (90.953 ± 1.0 cm3 and 149.225 ± 1.0 cm3 for the reference and sample cells respectively), the gas compression pycnometer was considered acceptable for use.

SAMPLE

- The mass of the vessel, vessel and test item, and the calculated mass of test item are shown in Table 3.6 (attached).

- Pressure readings obtained for the vessel and vessel containing test item are shown in Table 3.7 (attached).

- The calculated volumes and density obtained are shown in Table 3.8 (attached).

DISCUSSION

- Due to the test item's viscosity, it was considered that the pycnometer method for liquids would be impractical.

- Therefore, test item was transferred into glass vessels which would fit inside the sample cell of the gas comparison pycnometer and melted at 40 °C to allow the removal of any air bubbles or trapped air pockets.

- The samples were then allowed to solidity by equilibration to 20 °C for at least one hour.

- Two determinations were performed to ensure a reproducibility of less than ± 20 kg/m3 was obtained.

Conclusions:

The relative density of the test item was assessed in accordance with OECD Guideline 109. The density of the test item was determined to be 974 kg/m3 at 20.0 ± 0.5 °C and a relative density of 0.974.

Executive summary:

GUIDELINE

Relative density was determined using a procedure designed to be compatible with Method 109 of the OECD Guidelines for Testing of Chemicals, 02 October 2012, and Method A.3 Relative Density of Commission Regulation (EC) No 440/2008 of 30 May 2008.

METHOD

Relative density was determined using the gas comparison pycnometer method. After suitable calibration using reference cells, a test sample was measured in triplicate at 20 °C, and the mean relative density was calculated.

RESULTS

Reproducibility of less than ± 20 kg/m3 was obtained during two determinations.

CONCLUSION

The density of the test item was determined to be 974 kg/m³ at 20.0 ± 0.5 °C and a relative density of 0.974.

Description of key information

 The relative density of the test item was assessed in accordance with OECD Guideline 109.  The density of the test item was determined to be 974 kg/m3 at 20.0 ± 0.5 °C and a relative density of 0.974.

Key value for chemical safety assessment

Relative density at 20C:

0.974

Additional information

GUIDELINE

Relative density was determined using a procedure designed to be compatible with Method 109 of the OECD Guidelines for Testing of Chemicals, 02 October 2012, and Method A.3 Relative Density of Commission Regulation (EC) No 440/2008 of 30 May 2008.

METHOD

Relative density was determined using the gas comparison pycnometer method. After suitable calibration using reference cells, a test sample was measured in triplicate at 20 °C, and the mean relative density was calculated.

RESULTS

Reproducibility of less than± 20 kg/m3 was obtained during two determinations.

CONCLUSION

The density of the test item was determined to be 974 kg/m³at 20.0 ± 0.5°Cand a relative density of 0.974.