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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:
up to 2008
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Source is a published handbook, no data on GLP/guideline compliance/method. Acceptable with restriction as handbook is peer reviewed and considered a reliable source
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:
not reported
Type of method:
other: Not reported
Key result
Type:
relative density
Density:
0.62 g/cm³
Temp.:
20 °C
Conclusions:
2-methylbutane has a relative density of 0.6201 g.cm-3 at 20 °C
Executive summary:

There is no available information on the methods used to determine the value for this endpoint. However, this information is taken from the CRC Handbook which is considered to be a reliable peer reviewed handbook and suitable for use as the key study for this endpoint. Therefore 2-methylbutane has a relative density of 0.6201 g.cm-3 at 20 °C.

Description of key information

The density is between 0.61 and 0.65 g/cm3 at 15˚C  for 2-methylbutane based ISO 12185 methodology.

Key value for chemical safety assessment

Additional information

The density is between 0.61 and 0.65 g/cm3 at 15˚C for 2-methylbutane based ISO 12185 methodology. This range has been agreed by the consortium to represent the substance. This is supported by a value of 0.6201g.cm-3 at 20˚C from the CRC Handbook (Lide 2008). There is no information available on the methods used to determine the value for this endpoint. However, the CRC Handbook is considered to be a reliable, peer-reviewed handbook and suitable for use as a study for this endpoint.