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: 232-092-5
CAS number: 7786-17-6
ErL50 and NOELR > maximum substance solubility, OECD 201, EU Method C. 3, ISO 8692 and OECD series on testing and assessment number 23, Migchielsen 2013c.
In the key study (Migchielsen, 2013c) the toxicity of the test material
to algae was determined in a fresh water growth inhibition test with Pseudokirchneriella
subcapitata. The study was performed under GLP conditions and
in line with standardised guidelines. Algae were exposed at the maximum
soluble concentration of the test material in a combined limit/range
finding test, under static conditions for 72 hours.
Due to the low solubility of the test material, test solutions were
prepared as Water Accommodated Fractions (WAFs) at loading rates of 1.0,
10 and 100 mg/L an additional test solution was prepared at a ten-fold
dilution of the 1.0 mg/L WAF.
Analyses of the samples taken from the WAF prepared at 100 mg/L showed
that the measured concentration could not be detected. Hence, the
measured concentration was below 0.18 mg/L, the concentration present in
the lowest calibration solution. Despite the fact that actual exposure
concentrations could not be measured, it was considered that the maximum
soluble concentration in algal test medium was tested.
Under the conditions of the test, no significant differences were
recorded between the values for growth rate or yield at any of the test
concentrations when compared to the control group. Furthermore,
microscopic observations at the end of the test revealed a normal and
healthy appearance of the algae exposed to the WAF prepared at 100 mg/L
when compared to the control.
Since no signs of toxicity were observed in any of the treated samples,
the EL50 and NOELR are considered to exceed the maximum solubility of
the test material.
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