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EC number: 238-270-9
CAS number: 14324-55-1
In the assessment a 96-h LC50 value of
0.23 mg/L in rainbow trout (Oncorhynchus mykiss tested as Salmo
gairdneri) is used from a static GLP-compliant, EPA-660/3-75-009
guideline study without analytical monitoring (Analytical Bio-Chemistry
Laboratories, Inc., 1983a).
In the assessment a 48-h EC50 value of
0.24 mg/L in Daphnia magna from a semi-static OECD 202 guideline
study without analytical monitoring is used (van Leeuwen et al., 1985b).
In the assessment a 72-h ErC50 value of 47.5
µg/L and a 72-h ErC10 value of 47.4 µg/L for aquatic algae (Pseudokirchneriella
subcapitata) are used from a GLP-compliant algal growth inhibition
study according to OECD TG 201 conducted with zinc
diethyldithiocarbamate (Arkema, 2017).
One long-term toxicity study with
Daphnia magna is available for zinc diethyldithiocarbamate. The test is
a semi-static non-GLP, non-guideline study with Daphnia without
analytical monitoring (van Leeuwen et al., 1985c. The 21-d NOEC value is
3.2 µg/L and is used in the assessment.
The available long-term toxicity study to
fish (Akzo Nobel Research Laboratories, 1991) was considered not reliable
and was not used in the assessment. The endpoint has been waived.
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