3D model (JSmol)
|Molar mass||86.13 g·mol−1|
|Odor||Strong, acrid, pungent|
|Density||0.8095 at 20 °C|
|Melting point||−60 °C (−76 °F; 213 K)|
|Boiling point||102 to 103 °C (216 to 217 °F; 375 to 376 K)|
|Very slightly soluble|
|Vapor pressure||26 mmHg (20° C)|
|Flash point||12 °C; 54 °F; 285 K |
|US health exposure limits (NIOSH):|
|TWA 50 ppm (175 mg/m3)|
IDLH (Immediate danger)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
Pentanal is obtained by hydroformylation of butene. Also C4 mixtures can be used as starting material like the so-called raffinate II, which is produced by steam cracking and contains (Z)- and (E)-2-butene, 1-butene, butane and isobutane. The conversion to the product is accomplished with synthesis gas in the presence of a catalyst consisting of a rhodium-bisphosphite complex and a sterically hindered secondary amine with a selectivity toward pentanal of at least 90%.
2-Propyl-2-heptenal is obtained from pentanal by aldol condensation, which is hydrogenated to the saturated branched 2-propylheptanol. This alcohol serves as a starting material for the PVC plasticizer di-2-propylheptyl phthalate (DPHP).
- Merck Index, 11th Edition, 9813.
- n-Valeraldehyde at chemicalland21.com
- "NIOSH Pocket Guide to Chemical Hazards #0652". National Institute for Occupational Safety and Health (NIOSH).
- Patent WO 2009/146985 der Evonik Oxeno GmbH.