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EC number: 205-087-0
CAS number: 133-06-2
Chloroacetamide at a concentration of 3.0 to 243.0 mg/kg led to 27.5 -
100% mortality after 14 days. Mortality with captan is summarised in
Table 6.3.1 -1.
Table 6.3.1-1 Summary of
effects of captan on earthworms after 14 days exposure
Test compound: Captan
OECD guidelines (1984) for testing of chemicals, entitled "Earthworm,
Acute Toxicity Tests".
Test species: Earthworm,
Duration of treatment: A
Single soil treatment followed by a 14-day exposure period.
included a negative control group and five groups treated with test
compound at levels ranging from 5.2 mg/kg to 519.3 mg/kg .
Because of the limited
number of mortalities in the test groups, it was not possible to
determine LC50 values for Captan at 7 and 14 days. These values must lie
in excess of the maximum dose level of 519.3 mg/kg.
The LC50 values for control
group (chloroacetamide) were as follows:
LC50 value (ppm ai) 35.9
(95% confidence limits 20.6 – 68.9 ppm ai)
LC50 value (ppm ai) 20.8
(95% confidence limits 9.5 – 47.8 ppm ai)
The results indicate that
Captan technical is of low toxicity to earthworms at concentrations of
5.2 to 519.3 mg/kg in soil.
Toxicity to soil macroorganisms except arthropods (Eisenia foetida): LC50 (14 day) >519,3 mg/kg for earthworms (Eisenia foetida), OECD Guideline No. 207 (1984) "Earthworm acute toxicity test"
The results indicate that captan is of low toxicity to earthworms at
concentrations of 5.2 to 519.3 mg/Kg in soil. LC50 was not reached.
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