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: 200-543-5
CAS number: 62-56-6
Available literature on phototransformation
of thiourea in air reports that the substance is degraded from 0.23 to
4.7 % under the conditions of the GSF test (Schmidt-Bleek et al., 1982)
and when irradiated at a wavelength of 290 nm (Freitag et al., 1985),
respectively. In addition, Meylan & Howard (1993; as cited in the
Hazardous Substances Data Bank) determined an atmospheric half-life t1/2
of about 3 hours at an atmospheric concentration of 5.0E+05
hydroxyl radicals per cm³.
Regarding the phototransformation of thiourea
in water, the calculated half-life of thiourea in sunlit natural water
at a hydroxyl radical concentrations of 1.0E-17 M is 171 days (HSDB,
citing results of Mill et al. (1980).
HSDB states that Kolyada observed measurable
degradation in sterilized soils, although the mechanism for the
degradation was not studied. The extent of degradation is also not
Two data sources are available that describe
the hydrolysis of thiourea at different pH. Schmidt-Bleek et al. (1982)
report that thiourea is stable to hydrolysis at pH 4, 7, and 9. These
results are consistent with the findings of Korte & Greim (1981) who
observed no hydrolysis of thiourea at pH 1.2, 3, 7, and 9 under the
conditions of OECD guideline A-79.74D.
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.
Welcome to the ECHA website. This site is not fully supported in Internet Explorer 7 (and earlier versions). Please upgrade your Internet Explorer to a newer version.
Do not show this message again