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EC number: 214-275-1
CAS number: 1119-34-2
Waiving of experimental study. EC50 for algae was calculated to be ca. 26857 mg/L.
Data from a higher trophic level (fish and invertebrates) are available
which lead to the conclusion that aquatic toxicity does not occur. In
accordance with Annex XI No. 1.2 an experimental study is not conducted
as there is sufficient weight of evidence from several independent
sources of information leading to the assumption/conclusion that the
substance does not cause aquatic toxicity to algae.
for algae was calculated to be ca. 26857 mg/L. Considering the fact that
calculation models for aquatic toxicity to algae usually produce values
which are conservative to unrealistic conservative, even the estimated
high EC50 might not reflect actual toxicity to algae by L-arginine-HCl. Higher
EC50 might be possible.
L-arginine-HCl is present as L-arginine under physiological
conditions. L-arginine a is a naturally occuring amino acid which is
omnipresent bin nature. It is a basic metabolit and building block of
all living organisms and cells and is also a nutrient for algae.Thus
significant toxicity to algae by L-arginine-HCl can be excluded.
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