Buta-1,3-diene

Vapour pressure

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

vapour pressure

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: method not reported

Key result

Temp.:

17 °C

Vapour pressure:

217 kPa

Key result

Temp.:

22 °C

Vapour pressure:

255 kPa

Conclusions:

The vapour pressure of 1,3-butadiene is 217 kPa at 17ºC and 255 kPa at 22 ºC.

Executive summary:

The vapour pressure of 1,3-butadiene is 217 kPa at 17ºC and 255 kPa at 22 ºC. No information on the test methods used is available in the publication. However, this information is taken from a peer reviewed handbook and so can be considered reliable and suitable for use as the key study for this endpoint.

Reference 2

Endpoint:

vapour pressure

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: GLP status not known, guideline not known, information from a reliable peer-reviewed source and considered adequate for assessment.

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 International Chemical Safety Cards (ICSC) are produced by the WHOs International Programme on Chemical Safety (IPCS). The introduction to the ICSC states that they report “information collected, verified and peer reviewed by internationally recognized scientists”. Therefore, the values presented are acceptable as they are from a reliable secondary source of phys chem. data.

GLP compliance:

not specified

Type of method:

other:

Key result

Temp.:

20 °C

Vapour pressure:

245 kPa

No further details available

Conclusions:

The vapour pressure of buta-1,3-diene is 245 kPa at 20°C.

Executive summary:

The vapour pressure of 1,3-butadiene is 245 kPa at 20°C.

No information on the test methods used is available in the ICSC. However, this information is taken from a peer reviewed source and so can be considered reliable and suitable for use as the supporting study for this endpoint.

Description of key information

The vapour pressure of 1,3-butadiene is 217 kPa at 17 °C and 255 kPa at 22ºC.

Key value for chemical safety assessment

Vapour pressure:

217 kPa

at the temperature of:

17 °C

Additional information

The CRC Handbook (Lide, 2008) is peer reviewed and is considered reliable and suitable for use as the key study for this endpoint. This value is consistent with the value cited in the EU RAR (2002) for 1,3-butadiene, and is supported by the data from the peer reviewed International Chemical Safety Card (WHO ICSC, 2000) which gives a vapour pressure for 1,3 -butadiene of 245 kPa at 20°C.