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EC number: 915-748-1
CAS number: -
Table 1. Results of test with test media prepared as
water-accommodated fractions (mean cell concentrations in cells/ml in
each treatment loading rate)
Table 2. Results of test with test substance added directly (mean
cell concentrations in cells/ml in each treatment loading rate)
Table 1. Test results
Short-term toxicity to algae: 96 hour EC50 700 mg/l (nominal)
and EL10 60 mg/l (nominal) yield after logistic growth (OECD
Guideline 201 (Alga, Growth Inhibition Test)), read across from an
analogous/structurally related substance, polysulfides,
bis[3-(triethoxysilyl)propyl] (CAS 211519-85-6 ).
No data are available for toxicity of the
registration substance to aquatic algae. This endpoint is therefore
addressed by weight of evidence from reliable data for two related
constituent, CAS 56706-10-6) and polysulfides,
bis[3-(triethoxysilyl)propyl] (CAS 211519-85-6).
A 96-h EL50
value of 700 mg/l (WAF) and a 96-h EL10
of 60 mg/l have been determined for the effects of CAS 211519-85-6
on yield after logistic growth of Scenedesmus subspicatus. A
NOELR of 1000 mg/l has been estimated from the test results by the
report authors but does not seem realistic given the EL50 and
A 72-h EL50
value of >500 mg/l and a NOELR of 32 mg/l have been determined for
the effects of CAS 56706-10-6 on growth rate of Scenedesmus
subspicatus in the presence of ethanol as a vehicle. However, effects
may be attributable to the presence of undissolved test material.
The 96-hour EL50
value of 700 mg/l is considered to be the appropriate value for
the registration substance.
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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