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Physical & Chemical properties

Density

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Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2015-03-13
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
The study was conducted according to an appropriate test method and in compliance with known quality system (ISO 9001:2008)
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
DIN 51757
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Version / remarks:
DIN 51757
Deviations:
no
GLP compliance:
no
Other quality assurance:
other: ISO 9001:2008
Type of method:
oscillating densitimeter
Key result
Type:
relative density
Density:
1.198 other: Unitless
Temp.:
20 °C

 

Measurement

Density 20°C [g/cm3]

Relative density D20/4*

Test 1

1.19769

1.19773

Test 2

1.19766

1.19770

Mean value

1.198

1.198

*The relative density D20/4 is the ratio between the measured density of the test substance at 20°C and the density of water at 4°C (= 0.99997 g/cm3). The relative density has no dimension.

 

Check measurement: Density of degassed deionized water at 20°C: 0.99821 g/cm3

Reference value: 0.99820±0.00005 (20°C)

Conclusions:
A relative density of 1.198 at 20°C was obtained for the substance using a relevant test method. The result is considered to be reliable.

Description of key information

Relative density: 1.198 at 20°C (OECD 109)

Key value for chemical safety assessment

Relative density at 20C:
1.198

Additional information

Three reliable density values are available for trichloro(propyl)silane. A measured relative density value of 1.198 at 20°C was determined for the substance using an oscillating densimeter in accordance with OECD Test Guideline 109 and in compliance with a known quality system (ISO 9001:2008). The result is considered to be reliable and is selected as key study.

The key study is supported by density value of 1.195 g/cm3 at 20°C which was reported for the substance in a handbook or collection of reliable data which has been subject to peer-review and in which the original sources are traceable. Also, a predicted density value of 1.19 g/cm3 at 20°C was obtained for the substance using a validated QSAR estimation method. The supporting studies are in agreement with the key study that the density of the substance is greater than 1.

In a secondary source to which reliability could not be assigned, density value of 1.2 g/cm3 at 20°C was reported for the substance.