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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:
from 2016-01-22 to 2016-04-19
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:
no
Type of method:
air comparison pycnometer (for solids)
Key result
Type:
relative density
Density:
1.22 other: dimensionless
Temp.:
20.3 °C

A measurement chamber with a volume of Vc = 7.8961 cm3 and an expansion chamber with a volume of Vr = 6.0848 cm3 were used. Two test series with different weights were performed at ambient temperature (20.3 °C).

 

Table 1. Results of the 1st test series

Weight: 1.7616 g

p1 / psi

p2 / psi

Volume / cm3

Density ρPR / g/cm3

1st measurement

19.573

10.074

1.4429

1.2209

2nd measurement

19.558

10.064

1.4459

1.2183

3rd measurement

19.548

10.058

1.4470

1.2174

Mean

 

 

1.4453

1.2189

 

Table 2. Results of the 2nd test series

Weight: 1.6890 g

p1 / psi

p2 / psi

Volume / cm3

Density ρPR / g/cm3

1st measurement

19.561

10.108

1.3896

1.2154

2nd measurement

19.524

10.091

1.3868

1.2179

3rd measurement

19.535

10.097

1.3864

1.2183

Mean

 

 

1.3876

1.2172

 

Mean density ρPR for the two test series: 1.2181 g/cm3. The relative density at ambient temperature (compared to water at 4 °C) was determined to be 1.22 (20.3 °C).

Conclusions:
The relative density at ambient temperature (compared to water at 4 °C) was determined to be 1.22 (20.3 °C).
Executive summary:

A study was conducted according to OECD TG 109 and Regulation (EC) No 440/2008 method A.3 to determine the relative density of the test item. The density was determined in two test series with three determinations each. Using the air comparison pycnometer method the density was determined to be 1.2181 g/cm3 at 20.3 °C and the relative density 1.22 with respect to water at 4 °C, respectively.

Description of key information

The relative density at ambient temperature (compared to water at 4 °C) was determined to be 1.22 (20.3 °C).

Key value for chemical safety assessment

Relative density at 20C:
1.22

Additional information

A study was conducted according to OECD TG 109 and Regulation (EC) No 440/2008 method A.3 to determine the relative density of the test item (reference 4.4-1). The density was determined in two test series with three determinations each. Using the air comparison pycnometer method the density was determined to be 1.2181 g/cm3 at 20.3 °C and the relative density 1.22 with respect to water at 4 °C, respectively.