| Although ketones are not as reactive as aldehydes, they are also important intermediates in the synthesis of many compounds. |
| The aromatic aldehydes have a benzene or phenyl ring connected to the aldehyde group. |
| The fumes also contain sulfur dioxide, and various aldehydes, primarily formaldehyde as well as acetaldehyde and acrolein. |
| Typical reactions of ketones are addition reactions although as a group they are less reactive than the aldehydes. |
| Experience in distilling aldehydes led us to believe that acetaldehyde would form acetals in the overheads of the low pressure column. |
| The volatile profile of fruits determined by gas chromatography and mass spectroscopy is complex, including many alcohols, aldehydes and esters. |
