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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:
2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reference:
Composition 1
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
GLP compliance:
no
Type of method:
pycnometer method
Remarks:
EU A3 Pycnometer Method
Test material information:
Composition 1
Type:
relative density
Density:
ca. 1.04
Temp.:
20 °C

The measurement of the relative density of test substance was carried out in duplicate using 25ml pycnometers and the average value was taken as the result. 

The true volume of the density bottles was determined using distilled water, then the weight of an equivalent volume, at 20°C, of the test substancewas determined and relative density calculated.

  

Test reults:

 

Test 1

Test 2

Volume of pycnometer (ml) (V) 

24.1599 

24.5695

Density of test substance (D1) 

1.0388

1.0388

Relative deinsity (D1/Y)

1.0388                   

1.0388

Conclusions:
The relative density of Isopentyl p-methoxycinnamate was 1.04±0.01 at 20°C.


Executive summary:

 A relative density of test substance determined using Pycnonmeter method in accordance with EU A3 was 1.04±0.01 at 20°C.

The measurement was performed in duplicate using 25 mL pycnometers and the average value was taken as the result. The true volume of the density bottles was determined using distilled water, then the weight of an equivalent volume, at 20°C, of the test substance was determined and the relative density was calculated.

The relative density of the two test substancce samples was 1.0388 for both. This average value was rounded up to 1.04.

As the test substance is immiscible in water and shows a relative density slightly above 1.0, it is not expected to sink in water.

Description of key information

The relative density of Isopentyl p-methoxycinnamate was 1.04 at 20°C.

Key value for chemical safety assessment

Relative density at 20C:
1.04

Additional information

The relative density of the test substance was determined using pycnometer method according to EU method A3.

The measurement was performed in duplicate using 25 mL pycnometers and the average value was taken as the result. The true volume of the density bottles was determined using distilled water, then the weight of an equivalent volume, at 20°C, of the test substance was determined and the relative density was calculated.

The relative density of the two test substancce samples was 1.0388 for both. This average value was rounded up to 1.04. As the test substance is immiscible in water and shows a relative density slightly above 1.0, it is not expected to sink in water.