Registration Dossier
Registration Dossier
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EC number: 295-405-4 | CAS number: 92045-23-3 A complex combination of hydrocarbons produced by the distillation of the products of a steam cracking process. It consists predominantly of hydrocarbons having a carbon number of C4, predominantly 1-butene and 2-butene, containing also butane and isobutene and boiling in the range of approximately minus 12°C to 5°C (10.4°F to 41°F).
Density
Administrative data
Link to relevant study record(s)
Description of key information
Density data was not available for any of the streams within this Category. However as the category consists of mainly C4 hydrocarbons, data were read across from hydrocarbon C4 substances (CAS numbers 107-01-7: 0.588 g/cm3(cis) and 0.616 g/cm3(trans), 115-11-7: 0.59 g/cm3, 106-98-9: 0.588 g/cm3, 25167-67-3: 0.56 g/cm3to 0.62 g/cm3). All information came from a peer reviewed handbook (CRC, 2008) and all measurements are at 20°C. The density range for this Category was determined as 0.555 - 0.62 g/cm3.
The mean of the density values for the category is 0.594 g/cm3at 20°C and this has been used to complete the 'key value for chemical safety assessment'.
Key value for chemical safety assessment
- Relative density at 20C:
- 0.594
Additional information
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