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: 200-756-3
CAS number: 71-55-6
The existing data available had been reviewed by Euro Chlor (De Rooij et al. 2004). This review document evaluated algae studies on seven freshwater species and two marine species. A summary of the results of which are shown in the tables below. The only study rated by De Rooij et al 2004 as acceptable without restriction was the article published by Brack and Rottler (1994) on a series of chemicals. This work makes use of specific design in order to test volatile substance but it presents several drawbacks for hazard or risk assessment: apart from the fact that the species used is not among the standard ones referred to in the OECD Guideline 201, only biomass is provided. Recently, studies carried out on same substances as those tested by Brack and Rottler have delivered resullts significantly different, casting doubts on the validity of the latter.A new study has been commissioned, under GLP conditions, according to OECD 201 and with specific technical provisions described in ISO 14442 standard dealing with algae testing of volatile substances. The results, retained as key study, gives an ErC50-72h = 41 mg/l and a NOECr = 7.8 mg/l.
The study summaries evaluated by
the reviewers in the Euro Chlor report are shown in table below.
studies on freshwater algae.
Brack & Rottler 1994
Hutchinson et al 1980
Bringmann & Kuhn 1978
US EPA 1978
Pearson & McConnell 1975
No data is available to provide
an EC10 value for marine algae is available in the literature. However
as trichloroethane does not possess specific activity it is reasonable
to suppose that the values would be similar to freshwater algae.
The new study commisioned in order
to check validity of the results of the article published by Brack and Rottler
confirms (as for other chemicals) that these results are to be considered
as not valid, for some reason (experimental details lacking in the article).
The new GLP compliant, carried out according to OECD 201 and specific conditions
described in ISO 14442 for algae testing of volatile substances gives:
ErC50-72h = 41 mg/l and a NOECr = 7.8 mg/l.
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.
Ce site web utilise des cookies afin de vous garantir la meilleure expérience possible sur nos sites web.
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