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The article contains sections titled: 1. Introduction 2. Properties 2.1. Physical Properties 2.2. Chemical Properties 3. Production 3.1. Acrolein by Propene Oxidation 3.2. Methacrolein 4. Quality and Analysis 5. Handling, Storage, and Transportation 6. Uses and Production Data 7. Toxicology and Ecotoxicology 7.1. Toxicology 7.2. Ecotoxicology Acrolein is the simplest unsaturated aldehyde. It is an important intermediate in the production processes of a variety of substances. The main use of isolated acrolein is in the production of d,l ‐methionin, but in far more production processes, acrolein is used without purification. Acrolein is an extremely reactive chemical and, in very low concentrations, acts as a very effective broad‐spectrum biocide. Methacrolein is produced commercially as an organic intermediate, which is used as building block for chain expansions or, in limited application, in the synthesis of flavors and fragrances.

The hydrogenation of 3-hydroxypropanal (HPA) to 1,3-propanediol (PD) over Ni/SiO2/Al2O3 catalyst powder was carried out at 318−353 K and 2.60−5.15 MPa in a batchwise-operated stirred autoclave. A kinetic model which can well describe the reactions of this process was developed. The model parameters were estimated by the maximum likelihood function of the concentration of HPA and PD according to concentration−time profiles measured at different temperatures and pressures. To obtain high selectivity of PD the reaction temperature should be lower than 333 K.

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