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EC number: 287-401-6
CAS number: 85507-79-5
toxicity to a number of freshwater fish species has been determined over
a 96 hour period. The LC50 in rainbow trout was in excess of 1.4 mg/L,
in fathead minnow was in excess of 1.3 mg/L and in bluegill was in
excess of 0.73 mg/L. These values represent the highest concentrations
examined which was at, or in excess of, the water solubility of the
subsance. Acute toxicity to a marine species, sheepshead minnow, has
also been determined. The 96 hour LC50 was in excess of 0.22 mg/L, the
highest concentration investigated which was at, or in excess of, the
water solubility of the substance
immobilisation to Daphnia has been investigated over a 48 hour period.
Entrapment on the surface occurred at higher concentrations, regarded as
beyond the water solubility of the substance. The EC50 was > 0.022 mg/L
and a NOEC of 0.0195 mg/L was established. A second study reports an
EC50 of 15 mg/L. This concentration is in excess of the normal water
solubility of the substance and was obtained by the use of solubilising
investigation of algal growth inhibition resulted in an EC50, based on
cell numbers, after 72 hours and 8 days of >3.3 mg/L. The NOEC was 3.3
toxicity to fish has been determined in a fish early life stage test
with rainbow trout. Under the conditions of the test the NOEC, based on
the mean measured concentration, was 0.30 mg/L, the highest
concentration investigated and regarded as the maximum water solubility
under the test conditions.
21 -day chronic study on Dapnia magna resulted in a NOEC for survival
and reproduction of daphnids of 0.059 mg/L. Another report of a 21 -day
chronic test described no adverse effects on the reproduction of daphnia
magna when compared with the test medium control or dispersion
control. The NOEC was estimated to be 1.0 mg/L and the EC50 >1.0 mg/L.
Solubilising agents were used to increase concentration of the substance
beyond its water solubility.
Data on toxicity to microbial organisms has
been derived from the toxicity controls used in ready biodegradation
testing. A NOEC of 15 mg/L has been asssigned based on the concentration
used in the ready bidegradability test(s).
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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