Ethylene

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Remarks:

Other density types indicated: density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

up to 2006

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: GLP status not known, guideline not known, information from a published handbook, acceptable with restrictions

Justification for type of information:

N/A

Guideline:

other: Not specified

Principles of method if other than guideline:

The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. The introduction to the Merck Index states that physical data are cited as found in the literature. When several alternate data values appear in the literature, the data is evaluated and representative selections are made; values are then reported with the corresponding source. Therefore, although the method used is not known, the values presented here are acceptable as they are from a reliable secondary source of phys chem. data.

GLP compliance:

not specified

Type of method:

other: No data reported

Specific details on test material used for the study:

not specified

Dynamic viscosity of test material:

not specified

Key result

Type:

density

Remarks:

at 760 mm Hg

Density:

1.26 g/L

Temp.:

0 °C

Key result

Type:

relative density

Density:

ca. 0.98 other: Relative density is a ratio

Temp.:

20 °C

Remarks on result:

other:

Remarks:

Relative density is a ratio

One litre of ethylene gas at 760 mmHg and 0°C weighs 1.260g.

Conclusions:

The relative vapour density of the test subtance is 0.978.
The density of the test substance is 1.260 g/L at temperature of 0°C and pressure of 760 mmHg.

Executive summary:

The relative vapour density of the test subtance is 0.978. No information on the primary source of this data or the methods used is available. However, this information is taken from a reliable peer reviewed handbook and so can be considered reliable and suitable for use for this endpoint.

Description of key information

The relative density of ethylene is 0.978.

Key value for chemical safety assessment

Relative density at 20C:

0.978

Additional information

The Merck Handbook (O'Neil 2006) is peer reviewed and is considered reliable and suitable for use as a key study for this endpoint. It reports a density for the gas of 1.290 g/L at 0°C and 760 mm Hg pressure and a relative density of 0.978. The supporting study, CRC Handbook (Lide 2008) is also a peer reviewed handbook and reports a density for the gas of 0.5678 g/cm3 at -104°C.