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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:
15.09.2015 - 18.01.2016
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
GLP compliance:
no
Type of method:
air comparison pycnometer (for solids)
Key result
Type:
relative density
Density:
1.4 other: dimensionless
Temp.:
20 °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 (20.0°C).

Table 1: Results of the 1st test series

Weight: 1.3293 g

p1 / psi

p2 / psi

Volume / cm³

Density ρPR / g/cm³

1st measurement

19.560

10.429

0.9463

1.4048

2nd measurement

19.548

10.423

0.9457

1.4056

3rd measurement

19.579

10.439

0.9464

1.4045

Mean

 

 

0.95

1.41

 

Table 2: Results of the 2nd test series

Weight: 1.2602 g

p1 / psi

p2 / psi

Volume / cm³

Density ρPR / g/cm³

1st measurement

19.506

10.431

0.9020

1.3971

2nd measurement

19.569

10.465

0.9016

1.3978

3rd measurement

19.525

10.442

0.9008

1.3989

Mean

 

 

0.90

1.40

Mean density ρPR for the two test series: 1.40 g/cm³

Relative density (compared to water at 4 °C) :

D4R = ρPR / ρW4 = 1.40 g/cm³ / 1.00 g/cm³ = 1.40 ± 0.01

Conclusions:
The relative density of the test substance was determined to be 1.40.
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 runs each with three measurements. Using the air comparison pycnometer method the density was determined to be 1.40 g/cm³ at 20 °C and the relative density 1.40 with respect to water at 4 °C, respectively.

Description of key information

The relative density of the test substance was determined to be 1.40.

Key value for chemical safety assessment

Relative density at 20C:
1.4

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. The density was determined in two runs each with three measurements. Using the air comparison pycnometer method the density was determined to be 1.40 g/cm³ at 20 °C and the relative density 1.40 with respect to water at 4 °C, respectively (reference 4.4-1).