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EC number: 204-427-5
CAS number: 120-80-9
atmospheric lifetime of catechol is estimated to be less than 1 day. The
primary mechanism influencing its lifetime is the OH radical reaction.
the publication contains no information on its transformation products.
Here is reported an overview of ambient
measurements and atmospheric transformation data on 189 chemicals listed
in the Clean Air Act Amendment (CAAA) of the US-EPA. The methodology
used to obtain the data on atmospheric transformation is not precised
for each chemicals. Instead, it is indicated that, depending on the
products, the estimated atmospheric lifetimes either came from
literature, or were calculated by the authors for the purpose of the
current publication using rate constants obtained through measurement or
derived from structure-reactivity relationship. In the case of catechol
an estimated atmospheric lifetime of less than one day is reported;
revealing catechol is rapidly transformed or removed.
Atmospheric half-life < 1 day.
Two publications, scored of reliability 2
(Kelly et al., 1994) and 4 (CEPA, 2008) according to Klimisch, give
consistent results in terms of photodegradation. Both report atmospheric
half-life inferior to 1 day; revealing that catechol is rapidly
transformed or removed in air through reaction with OH radicals.
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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