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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:
2017-12-08
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7300 (Density / Relative Density / Bulk Density)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
pycnometer method
Key result
Type:
relative density
Density:
1.749
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 densitiy measurements

Sample

number

Sample mass
(g)
Sample volume
(cm³)
Density of the test item
(g/cm³)
1 2.8339 1.6146 1.7552
2 3.2622 1.8672 1.7471
3 3.0265 1.7160 1.7637
4 3.1167 1.7974 1.7340
5 3.1057 1.7776 1.7472
Mean: 1.7494
Confidence interval (95 %): 0.01368
RSD (CV%): 0.6
Conclusions:
The relative density of the test item was determined to be 1.7494 ± 0.01368 (with 95 % confidence interval) at 20 °C.
Executive summary:

A study was conducted according to OECD TG 109, Regulation (EC) No 440/2008 method A.3 and OPPTS 830.7300 in order to determine the relative density of the test item by using the air comparison pycnometer method. In the density tester the true volume of the test item was measured and the density calculated. Five parallel tests were performed. The mean relative density of the test item was determined to be 1.7494 ± 0.01368 at 20 °C.

Description of key information

The relative density of the test item was determined to be 1.7494 ± 0.01368 (with 95 % confidence interval) at 20 °C.

Key value for chemical safety assessment

Relative density at 20C:
1.749

Additional information

A study was conducted according to OECD TG 109, Regulation (EC) No 440/2008 method A.3 and OPPTS 830.7300 in order to determine the relative density of the test item by using the air comparison pycnometer method. In the density tester the true volume of the test item was measured and the density calculated. Five parallel tests were performed. The mean relative density of the test item was determined to be 1.7494 ± 0.01368 at 20 °C (reference 4.4-1).