Ethane

Density

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

density, other

Remarks:

density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Up to 2008

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Non-GLP, non-guideline, Information from published handbook, acceptable with restrictions.

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 CRC Handbook of Chemistry and Physics states that data for physical constants have been taken from many sources, including both compilations and the primary literature. Where conflicts were found, the value deemed most reliable was chosen. 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

Remarks:

No data reported

Type of method:

other: No data reported

Specific details on test material used for the study:

N/A

Dynamic viscosity of test material:

N/A

Key result

Type:

density

Density:

0.57 g/cm³

Temp.:

25 °C

Remarks on result:

other: Pressure >1 atm

N/A

Conclusions:

The density of butane is 0.573 g/cm^3 at 25°C.

Executive summary:

The density of butane is 0.573g/cm³ at 25˚C. This information is taken from a reliable peer reviewed handbook and so can be considered reliable and suitable for use as the key study for this endpoint.

Reference 2

Endpoint:

density, other

Remarks:

density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Up to 2008

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.

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 CRC Handbook of Chemistry and Physics states that data for physical constants have been taken from many sources, including both compilations and the primary literature. Where conflicts were found, the value deemed most reliable was chosen. 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.

GLP compliance:

not specified

Type of method:

other: Method not known

Specific details on test material used for the study:

N/A

Dynamic viscosity of test material:

N/A

Key result

Type:

density

Density:

0.545 g/cm³

Temp.:

-89 °C

Remarks on result:

other: Liquid ethane

N/A

Conclusions:

The density of liquid ethane at -89˚C is 0.545 g/cm^-3.

Executive summary:

No information on the primary source of the 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 as the key study for this endpoint. Most up to date source at the time.

Reference 3

Endpoint:

density, other

Remarks:

density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Up to 2008

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Non-GLP, non-guideline, Information from published handbook, acceptable with restrictions.

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 CRC Handbook of Chemistry and Physics states that data for physical constants have been taken from many sources, including both compilations and the primary literature. Where conflicts were found, the value deemed most reliable was chosen. 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

Remarks:

No data reported

Type of method:

other: No data reported

Specific details on test material used for the study:

N/A

Dynamic viscosity of test material:

N/A

Key result

Type:

density

Density:

0.589 g/cm³

Temp.:

25 °C

Remarks on result:

other: Pressure >1 atm

N/A

Conclusions:

The density of isobutane is 0.589 g/cm^3 at 25°C.

Executive summary:

The density of isobutane is 0.589g/cm³ at 25˚C. This information is taken from a reliable peer reviewed handbook and so can be considered reliable and suitable for use as the key study for this endpoint.

Reference 4

Endpoint:

density, other

Remarks:

density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Up to 2008

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Non-GLP, non-guideline, Information from published handbook, acceptable with restrictions.

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 CRC Handbook of Chemistry and Physics states that data for physical constants have been taken from many sources, including both compilations and the primary literature. Where conflicts were found, the value deemed most reliable was chosen. 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

Remarks:

No data reported

Type of method:

other: No data reported

Specific details on test material used for the study:

N/A

Dynamic viscosity of test material:

N/A

Key result

Type:

density

Density:

0.423 g/cm³

Temp.:

-162 °C

N/A

Conclusions:

The density of methane is 0.423 g/cm^3 at -162°C.

Executive summary:

The density of methane is 0.423g/cm3 at -162°C. This information is taken from a reliable peer reviewed handbook and so can be considered reliable and suitable for use as the key study for this endpoint.

Reference 5

Endpoint:

density, other

Remarks:

density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Up to 2008

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Non-GLP, non-guideline, Information from published handbook, acceptable with restrictions.

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 CRC Handbook of Chemistry and Physics states that data for physical constants have been taken from many sources, including both compilations and the primary literature. Where conflicts were found, the value deemed most reliable was chosen. 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

Remarks:

No data reported

Type of method:

other: No data reported

Specific details on test material used for the study:

N/A

Dynamic viscosity of test material:

N/A

Key result

Type:

density

Density:

0.493 g/cm³

Temp.:

25 °C

Remarks on result:

other: Pressure >1 atm

N/A

Conclusions:

The density of propane is 0.493 g/cm^3 at 25°C.

Executive summary:

The density of propane is 0.493 g/cm³ at 25˚C. This information is taken from a reliable peer reviewed handbook and so can be considered reliable and suitable for use as the key study for this endpoint.

Description of key information

The density of the substances in the category ranges from 0.423 to 0.589 g/cm3.

Key value for chemical safety assessment

Relative density at 20C:

0.525

Additional information

Data from the CRC handbook (Lide 2008) were available for the substances methane, ethane, propane, butane and isobutane. Data are also available from the Merck handbook (O’Neill 2006) for methane, ethane, propane and butane. The information is taken from reliable peer reviewed handbooks and so can be considered reliable and suitable for use for this endpoint.

The density of methane is 0.423 g/cm3 at -162°C, ethane is 0.545 g/cm3 at -89˚C, propane is 0.493 g/cm3 at 25°C, butane is 0.573g/cm3 at 25°C and isobutane is 0.589 g/cm3 at 25°C. The mean of the density values for the category is 0.525 at 25°C and this has been used to complete the 'key value for chemical safety assessment'.