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EC number: 200-756-3
CAS number: 71-55-6
The results of a number of studies are included in this section together with one comprehensive review. The study chosen for both freshwater and marine invertebrates were conducted in a closed system to reduce active ingredient losses by volatilisation. The best study on fresh water invertebrates for which a robust study is available is that by Abernethy et al 1986. However, the risk assessment conducted by De Rooij et al 2004 based on the EuroChlor review contains a better study Bobra et al 1984 which achieved a higher classification for reliability than the study included in the dossier. As this study has a lower LC50 value for freshwater invertebrates it is used as the endpoint. (as a matter of interest the Abernethy 1986 study restates the results from the Bobra 1983 study but calculates the LC50 incorrectly therefore the two studiesare in fact identical). For marine invertebrates the LC50 value is obtained in a similar way from the EuroChlor review.
The results of the risk
Rooij et al 2004 on theEuro
Chlor review of studies available on a freshwater and marine
invertebrates are shown below.
studies on freshwater invertebrates
Bobra et al 1984
Abernethy et al 1986
Bringmann & Kuhn 1982
Pearson & McConnel 1975
Lack of control data
Sanchez-Fortun et al 1997
US EPA 1980
– three stages tested (24, 48, 72h.
A = Yes, N = nominal concentration.
type S = static, SS = semi-static, FT = flow through. C = closed system.
for validity 1 = valid without restriction, 2 = valid with restrictions,
3 = invalid, 4 = not assignable (inadequate data).
See also Overall Remarks in EuroChlor 1999 endpoint study report.
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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