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A flammable liquid, C3H6O, with a suffocating odor, used in the manufacture of plastics and rubber chemicals, and as a preservative and disinfectant. Also called propanal.

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Noun1.propionaldehyde - a colorless liquid aldehyde
aldehyde - any of a class of highly reactive chemical compounds; used in making resins and dyes and organic acids
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Propionaldehyde finds uses in pharmaceutical applications and the production.
The world-scale plant, dubbed 'Propanol-2', will boost Oxea's propanol production capacity by around 100,000 metric tonnes/year, and its propionaldehyde capacity by 40,000 mt/year, added the Oman Daily Observer report.
It is majorly produced by oxo process that is a two-step process in which firstly hydroformylation of ethylene with syn gas gives propionaldehyde, that is further hydrogenated to give n-propanol.
A mixture of 8 g of St-l%DVB copolymer (S) functionalized with amino groups (2 mmol amino groups/g polymer), phenylphosphinic acid, benzaldehyde (S2) [or propionaldehyde (S4)] in 50 ml tetrahydrofuran was maintained under stirring for 24 h at 55[degrees]C.
The wood industry is most interested in methanol, formaldehyde, acetaldehyde, propionaldehyde, acrolein, and phenol because these are listed HAPs and specified in the Plywood and Composite Panel Maximum Achievable Control Technology (MACT) rule.
The enzyme showed no activity towards 4-aminobutyraldehyde, betainealdehyde, acetaldehyde, propionaldehyde, butyraldehyde, isovaleraldehyde and pivaleraldehyde.
4 Arecoline forms at least four nitrosamines upon nitration; these products include N-nitrosoguvacine, N-nitroguvacoline, 3-(methyl-nitrosamino) propionitrile (MNPN) and 3-(methylnitrosamino) propionaldehyde (MNPA) and two unknown N-nitrosamines.
4 20 14 (1) Data for ALDH1A1 and ALDH2*1 from Klyosov, 1996; data for ALDH2*2 oxidation of propionaldehyde from Farres et al.
Possible TRI Chemicals Used or Generated in Processes Metal and Metal Fume Gaseous Emissions * Copper and Compounds Aniline Chromium and Compounds Acetaldehyde Lead and Compounds Ammonia Manganese and Compounds Butyraldehyde Zinc and Compounds Propionaldehyde Zinc Dust/Fume Benzene Aluminum Dust/Fume Formaldehyde Cobalt and Compounds n-Hexane Nickel and Compounds Naphthalene Phenol Styrene Triethylamine Toluene Xylene (mixed isomers) * Based on CERP/Technikon LLC review of test data as of May 2007.
10[micro]l of mPEG- propionaldehyde conjugated D-amino acid oxidase had been injected into HPLC column to know the change in retention time using same conditions as above.
Different hardening agents were used, formaldehyde being the most effective in terms of low-water absorption, followed by furfural and propionaldehyde.