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Diss Factsheets

Physical & Chemical properties

Density

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Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2003-09-25
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)
Version / remarks:
July 27, 1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Version / remarks:
December 1992
Deviations:
no
GLP compliance:
yes
Type of method:
oscillating densitimeter
Key result
Type:
relative density
Density:
1.081 other: unitless
Temp.:
20 °C

Results:

First, the apparatus was tested by determination of the density of air and water at 20°C. The value for water was in the accepted range of 0.9982 ± 0.0003 g/cm3.

Table 1 shows the individual measurements for the density of the test item. From these, the mean value was calculated and reported in the same table. The tabulated values represent rounded results obtained from calculation using the exact raw data.

Table 1: Determination of density of test item

Test number

Temperature (°C)

Density of Silquest Y-5187 Silane (g/cm3)

 

 

Measured

Mean value

Corrected for relative density

1

20

1.0814

1.0814

1.0814

2

20

1.0814

Calculation of relative density = 1.0814/0.99997 = 1.0814

Conclusions:
A relative density of 1.0814 at 20°C was determined for the test substance using an appropriate test method and in compliance with GLP. The result is considered to be reliable.

Description of key information

Relative density: 1.08 at 20°C (OECD 109)

Key value for chemical safety assessment

Relative density at 20C:
1.08

Additional information

A relative density of 1.08 at 20°C was determined for the substance according to OECD Test Guideline 109 and in compliance with GLP. The result is considered reliable and is selected as key study.

A density of 1.07 g/cm3 at 25°C was reported for the submission substance in a secondary source to which no reliability could be assigned. The supporting study is in good agreement with the key study.