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EC number: 204-815-4
CAS number: 126-97-6
Based on the overall information
available for thioglycolic acid, its salts and its main degradation (via
oxidation) product, the substances can be considered as of low toxicity
for aquatic species. The information available for the anionic form
allows to conclude that the thioglycolate is harmful to Daphnia magna only.
Acute ecotoxicity knowledge is strengthened by information existing on
diammonium dithioglycolate which is the main degradation product of
thioglycolic acid. Diammonium dithioglycolate occurs rapidly in the
environment based on practical case (Devaux, 2003) and therefore this
case is a good surrogate for the thioglycolate ecotoxicity. On this
basis it can be concluded that the thioglycolate anion is neither toxic
nor harmful for algae. Diammonium dithioglycolate data also exists for Daphnia
and demonstrates that this form is neither toxic nor harmful for Daphnia.
Additionally, it can be considered that the thioglycolate anion is of no
concern for Daphnia based on its half-life in water. Nevertheless
as valid experimental data exists on the thioglycolic acid, the
applicant prefers to retain this result and concludes that thioglycolic
acid is harmful to Daphnia.
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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