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EC number: 200-837-3
CAS number: 75-08-1
Ethanethiol has a measured OH reaction rate of 4.5 +/- 0.5 E-11 cm3 s-1 at 300K and 4.4 +/- 0.4 E-11 cm3 s-1 at 313K. This corresponds to a half-life of 0.36 days in air based on REACH defaults (REACH Technical Guidance Chapter R.16, ECHA 2012), calculated in EUSES v2.1.2. The reaction rate observed in the experiment falls within the range of reaction rates available in published literature for ethanethiol. The results from literature indicate a range of 2.7 E-11 cm3 s-1 (MacLeod 1983) to 4.65 E-11 cm3 s-1 (Wine 1984) for the reaction of ethanethiol with OH radicals.
Barnes (1986) is a non-GLP, non-guideline published study, which follows
scientific principles. The methods used were well described and were
tested using the reaction of n-butane, n-hexane and propene to OH
relative to the reaction of ethene with OH. The authors also compared
the results of the test to available literature values. The study is
considered reliable and suitable for use for this endpoint.
results of Barnes (1986) are supported by two other studies. Barnes
(1987) is a non-GLP, non-guideline study, with sound scientific
principles, analytical monitoring and a control group. Atkinson (1989)
is a review paper that includes and extends previous review
articles by the author and provides some general information about the
experimental methods and conditions. This paper is considered Klimisch
score 4, unassignable, as it has insufficient information for evaluation.
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.
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