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.

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