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EC number: 233-520-3
CAS number: 10213-78-2
order to classify a standard laboratory toxicity study as valid,
it is of particular importance that - besides information on test
substance, test method / conditions and test organism used - suitable
precautions are taken to prevent the loss of test substance by
adsorption and that exposure concentrations are based upon measured
ecotoxicity tests performed using the bulk approach, however,
adsorption to suspended matter and DOC is acceptable and only adsorption
to glassware should be accounted for. For a valid bulk approach test the
concentration-effect relationship should be based on the sum of adsorbed
and dissolved substance in the volume of the medium tested. One of the
advantages of the bulk approach tests with these difficult substances is
that in the presence of suspended matter, humic acids and/or algae, the
residual sorption to glassware will be negligible. The results of these
bulk approach tests are therefore much easier to interpret, more
environmental realistic, and if compared to PECbulkclearly
provide a more appropriate assessment of risks for the environment. All
effect values given are therefore based on the nominal test item
concentrations. The PNECaquatic bulk is calculated
using the assessment factor proposed by the TGD.
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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