Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 203-453-4 | CAS number: 107-02-8
Endpoint summary
Administrative data
Description of key information
Additional information
The stability of acrolein in the atmosphere is limited by the rapid gas-phase reactions with the hydroxyl radical and ozone. The calculated half-life of acrolein for the reaction with the OH-radical in the troposphere (*OH concentration 5 x 105 molecules/cm³, 24 hours) is less than one day and is in accordance with the half-life values derived from experiments. Unlike to the US ATSDR Report and the EU RAR the WHO Report stated the calculated atmospheric half-life of acrolein, based on rate constants for hydroxyl radical reaction, to be between 3.4 and 33.7 h. Other degradation routes, such as the reaction with nitrate radical (night-time; half-life: 16 days) and ozone (half-life: 59 days) as well as photolysis (daytime; half-life: 10 days in the lower troposphere and less than 5 days in the upper troposphere), are considered to be less significant. Based on the short estimated half-lives, acrolein is not a candidate for long-range atmospheric transport. The estimated reaction rate constant for the reaction of OH radicals with acrolein in water is k(OH) =6.52 x 10E9 (1/(M x s). Assuming a OH radical concentration in water in the range between 1 x 10E-15 and 1 x 10E-18 M and taking into account the calculated reaction rate constant the half-lives can be calculated using the equation t1/2=0.69/k(OH) x OH concentration. The calculations yielded half-lives t1/2 in the range between 30 and 30000 h. Photolysis in water is low. No information is available with respect to the phototransformation in soil.
Acrolein does not contain any hydrolysable groups, but it does react with water in a reversible hydration reaction to 3-hydroxypropanal (HPA). The half-life for this reaction was found to be 15 hours in sewage water, 45 hours in drinking water and up to 11 days in de-ionised water. Besides this reaction step HPA reacts in a secondary reaction with acrolein to 3,3’-oxydipropionaldehyde, which further reacts to other secondary products. In field studies (irrigation canals) half-life values for the elimination of acrolein between 3 and 7 hours were calculated. Apparently, processes other than hydration, e. g. volatilisation, also contribute to acrolein dissipation in the aquatic environment.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
