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EC number: 200-927-2
CAS number: 76-03-9
Toxicity to soil macroorganisms except arthropods:
Key study: LC50 (14 days) for Eisenia fetida = 1139.9 mg/kg soil dw (test method according to EU C8 guideline). This result suggests a low toxicity of trichloroacetic acid to Eisenia fetida.
Toxicity to terrestrial arthropods:
Supporting study: Fourteen months after trichloroacetic acid treatment, the number of Agriotes obscurus (wireworms) and springtails decreased, but not significantly. Otherwise, the number of millipedes and mites increased. Twenty-six months after treatment, the number of Agriotes sputator (wireworms) decreased, but not significantly.
Toxicity to terrestrial plants:
Key study: Several results with three different species. The 14 -d EC50 value for Avena sativa in a loam sand soil culture was 4.6 mg/kg. The NOEC value was 1 mg/kg. (test method acccording to OECD guideline 208). In fact, trichloroacetic acid is a known monocotyledon toxicant. A potential risk to the terrestrial environment is identified due to high toxicity to plants.
The 14 -d EC50 value for Lactuca sativa in a loam sand soil was 37 mg/kg.
The 14 -d EC50 value for Lycopersicum esculentum in a loam sand soil was 154 mg/kg.
Toxicity to soil microorganisms:
The NOEC for nitrogen transformation was determined to be 100.0 mg test item/kg soil dry.
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