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Density

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Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
16 Apr 2018
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)
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
GLP compliance:
yes (incl. QA statement)
Remarks:
Hess. Ministerium für Umwelt, Klimaschutz, Landwirtschaft und Verbraucherschutz, Wiesbaden, Germany
Type of method:
air comparison pycnometer (for solids)
Remarks:
helium gas
Specific details on test material used for the study:
Storage conditions: room temperature
Type:
relative density
Density:
1.69 other: dimensionless
Temp.:
20 °C

Results
Relative density
Two tests with different amounts of the test item were performed to determine the relative density D420at a temperature of 20 °C ± 0.01 °C.

Table 1 – results

Test no.

Temperature [°C]

Amount of test item [g]

Average sample volume [cm³]

Density [g/cm³]

1

20

11.38

6.74229

1.69

2

20

11.05

6.55195

1.69

* The pressurizing-expansion cycles are performed until 5 subsequent volume measurements have a relative standard deviation (RSD) of ≤ 0.2 %.

The mean density of the test item at 20 °C is 1.69 g/cm³. The relative density D420is calculated by dividing the density of the test item by the density of water at 4 °C (0.9999750 g/cm³).

The relative density is D420 = 1.69.
Conclusion
According to OECD Test Guidelines 109 (2012), Regulation EC No. 440/2008 Method A.3. and EPA OCSPP Test Guideline 830.7300 (2002), the relative density D420of the dried solid test item
ETA Lösung 181 / TRISODIUM EDTA SOLUTION 20% at 20 °C ± 0.01 °C (compared to water at 4 °C) is D420=1.69.

Description of key information

1.69 at 20 °C (OECD 109)

Key value for chemical safety assessment

Relative density at 20C:
1.69

Additional information

According to OECD Test Guideline 109 (2012), Regulation EC No. 440/2008 Method A.3. and OCSPP Test Guideline 830.7300 (2002), the relative density D420 of the test item at 20 °C ± 0.01 °C (compared to water at 4 °C) is D420 =1.69