Registration Dossier
Registration Dossier
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The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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EC number: 268-629-5 | CAS number: 68131-75-9 A complex combination of hydrocarbons produced by distillation of products from the cracking of crude oil. It consists of hydrocarbons having carbon numbers in the range of C3 through C4, predominantly of propane and propylene, and boiling in the range of approximately -51°C to -1°C (-60°F to 30°F.)
Flash point
Administrative data
Link to relevant study record(s)
- Endpoint:
- flash point, other
- Type of information:
- experimental study
- Adequacy of study:
- key study
- 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. data.
- GLP compliance:
- not specified
- Type of method:
- other: Not stated
- Flash point:
- -87 °C
- Atm. press.:
- 1 013 hPa
- Remarks on result:
- other: Pressure was not reported so was assumed to be standard pressure
- Conclusions:
- Flash point of Isobutane is -87˚C.
- 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. Propane is a gas at room temperature and therefore, in accordance with ECHA (2008) Guidance on information requirements and chemical safety assessment, chapter R7a: endpoint specific guidance, the flash point study does not need to be conducted. Endpoint for information only. Flash point of Isobutane is -87˚C.
- Endpoint:
- flash point, other
- Type of information:
- experimental study
- Adequacy of study:
- key study
- 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. data.
- GLP compliance:
- not specified
- Type of method:
- other: Not stated
- Flash point:
- -60 °C
- Atm. press.:
- 1 013 hPa
- Remarks on result:
- other: Pressure was not reported so was assumed to be standard pressure
- Conclusions:
- Flash point of butane is -60˚C.
- 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. Butane is a gas at room temperature and therefore, in accordance with ECHA (2008) Guidance on information requirements and chemical safety assessment, chapter R7a: endpoint specific guidance, the flash point study does not need to be conducted. Endpoint for information only. Flash point of butane is -60˚C.
- Endpoint:
- flash point, other
- Type of information:
- experimental study
- Adequacy of study:
- key study
- 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. data.
- GLP compliance:
- not specified
- Type of method:
- other: Not stated
- Flash point:
- -104 °C
- Atm. press.:
- 1 013 hPa
- Remarks on result:
- other: Pressure not reported, so assumed to be standard pressure
- Conclusions:
- Flash point of propane is -104°C.
- 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. Propane is a gas at room temperature and therefore, in accordance with ECHA (2008) Guidance on information requirements and chemical safety assessment, chapter R7a: endpoint specific guidance, the flash point study does not need to be conducted. Endpoint for information only. Flash point of propane is -104°C.
Referenceopen allclose all
Description of key information
The flash point of the substances in the category ranges from -104°C to -60°C.
Key value for chemical safety assessment
- Flash point at 101 325 Pa:
- -84 °C
Additional information
Data from the CRC handbook (Lide 2008) were available for propane, butane and 2 -methylpropane (isobutane). The information is taken from a reliable peer reviewed handbook and so can be considered reliable and suitable for use for this endpoint.
The flash point of propane is -104°C, butane is -60°C and isobutane is -87°C. The data available for these substances can be read across to other members of the category. The mean of the flash point values for the category is -84°C and this has been used to complete the 'key value for chemical safety assessment'.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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