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Ecotoxicological information

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Concerning the toxicity to the aquatic compartment, tests for each trophic level are available. In none of the species a toxic effect was observed up to the limit concentration (nominally 100 mg/L).

Concerning fish and daphnids the test concentration was monitored by TOC. In case of algae an analytical monitoring with HPLC was performed. The monitoring showed a stability of Amino-THC-Acid in the test media.

 

Fish:

The short-term toxicity on fish was determined in a static test system according to the Council Directive 92/69/EEC C.1 "Acute Toxicity for Fish"; Official Journal of the EC L 383 Part A/163 (1992) which is in most parts identical to the OECD guideline for Testing of Chemicals No. 203 "Fish, Acute Toxicity Test" (1992) was conducted. No effects were observed up to the concentration limit.

Daphnia:

Daphnia magna was exposed und static conditions for 48 hours to a concentration (nominally 100 mg/L) of the test substance. The test was conducted according to Council Directive 92/69/EEC C.2; Official Journal of the EC L 383 Part A/172 (1992) which is in most parts equivalent to OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test). No effects were observed up to the concentration limit.

 

Alga:

Desmodesmus subspicatus was exposed for 72 h to amino-THC-acid (nominally 25, 50 and 100 mg/L). The test was conducted according to EU Method C.3 (Algal Inhibition test) and OECD Guideline 201 (Alga, Growth Inhibition Test). An ErC10 of >100 mg/L and ErC50 of >100 mg/L were measured; a NOEC [r] of 50 mg/L and a LOEC [r] of 100 mg/L were calculated.