Registration Dossier
Registration Dossier
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EC number: 200-795-6 | CAS number: 73-22-3
Toxicity to soil macroorganisms except arthropods
Administrative data
Link to relevant study record(s)
Description of key information
In a screening test, the 48 h toxicity of L-tryptophan to Eisenia foetida was determined to be >1000 µg/cm².
Key value for chemical safety assessment
Additional information
The toxicity of L-tryptophan to Eisenia foetida was investigated in a study conducted similar to the filter paper contact test laid down in the OECD Guideline 207 (Earthworm, Acute Toxicity Tests, 1984). The 48 h LC50 for L-Tryptophan was found to be >1000 µg/cm². According to guideline, 1000 µg/cm² is the highest concentration to be tested.
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