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: 244-240-6
CAS number: 21145-77-7
The end points are based on measured values and
table 1 shows the AHTN concentrations in water.
Table 1 AHTN concentrations in water
The immonilisation and the number of
surviving/reproducing parents were also determined and are shown in
Table 2 Survival of parent daphnids
exposed to various concentrations of AHTN in a semi-static system for 21
days (values represent number of surviving parent daphnids).
mean reproduction per surviving and reproducing parent
tested at nominal concentrations ranging from 62.5-1000 µg/l
in Daphnia magna for reproduction and survival over 21 days in a
semi-static test following OECD guideline 202, part II. Mean
measured concentrations in 0.002% Tween 80 and 0.008% dimethylformamide
were determined to be 54.19, 112.9, 196.0, 400.5, and 804.0 µg/l
using HPLC. Test
media were renewed several times during the exposure period. No
significant immobility was reported at concentrations up to 196 µg/l
but 80% immobility was noted at 400.5 µg/l
and 100% was reported at 804 µg/l.
Reproductive output was not significantly affected at 54.19-196.0 µg/l
(ranging from 80-114% compared to solvent control) but was significantly
inhibited (p<=0.05) at 400.5 µg/l
by about 95%. No
reproduction occurred at the highest concentration. The 21-day NOEC and
LOEC values of the reproductive output (expressed as mean measured
concentrations) were 196 and 401µg/l,
respectively. The 21-day EC50 values (with 95% confidence limits) for
reproductive output and immobility of the parental generation were 244 µg/l
(238-249 ug/l) and 341µ/l
(243-433 ug/l), respectively.
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