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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:
2018-01-17
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
Qualifier:
according to
Guideline:
EPA OPPTS 830.7300 (Density / Relative Density / Bulk Density)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
pycnometer method
Key result
Type:
relative density
Density:
1.781
Temp.:
20 °C
Type:
density
Density:
1.781 g/cm³
Temp.:
20 °C

The density of the test item was determined from five replicates at 20 °C. The results are given in Table 1.

Table 1: Results of the density measurements

Sample number Sample mass (g) Sample volume (cm³) Density of the test item (g/cm³)
1 1.6464 0.9148 1.7998
2 1.6552 0.9305 1.7789
3 1.6262 0.906 1.7949
4 1.2425 0.7054 1.7615
5 1.1634 0.6575 1.7694
Mean:  1.7809
Confidence interval (95 %): 0.02026
RSD (CV %): 0.9
Conclusions:
The relative density of the test item was determined to be 1.7809 ± 0.02026 (with 95 % confidence interval) at 20 °C.
Executive summary:

A study was conducted according to OECD TG 109, Commission Regulation (EC) No. 440/2008, method A.3 (REACH) and EPA OPPTS 830.7300 in order to determine the relative density of the test item using the pycnometer method (multipycnometer density tester).The test item was filled into the empty, clean sample cell and the weight was measured. The volume of the test item was measured in inert gas (helium) in a cylinder of variable calibrated volume. The density tester determined automatically the volume of sample and the density was calculated. The test was performed five times. The mean density was determined to be 1.7809 g/cm³ ± 0.02026 with 95% confidence interval at 20 °C (equates to a relative density of 1.7809 ± 0.02026 at 20 °C).

Description of key information

The relative density of the test item was determined to be 1.7809 ± 0.02026 (with 95 % confidence interval) at 20 °C.

Key value for chemical safety assessment

Relative density at 20C:
1.781

Additional information

A study was conducted according to OECD TG 109, Commission Regulation (EC) No. 440/2008, method A.3 (REACH) and EPA OPPTS 830.7300 in order to determine the relative density of the test item using the pycnometer method (multipycnometer density tester). The test item was filled into the empty, clean sample cell and the weight was measured. The volume of the test item was measured in inert gas (helium) in a cylinder of variable calibrated volume. The density tester determined automatically the volume of sample and the density was calculated. The test was performed five times. The mean density was determined to be 1.7809 g/cm³ ± 0.02026 with 95% confidence interval at 20 °C (equates to a relative density of 1.7809 ± 0.02026 at 20 °C) (reference 4.4-1).