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EC number: 242-362-4
CAS number: 18479-58-8
Table 1. Inhibition concentrations
In a OECD 209 guideline study, activated sludge (treating
predominantly domestic waste) was exposed to linalool at nominal
test concentrations of 1.01, 3.22, 10.07, 32.22, 100.7 mg/l for 30
minutes and 3 hours. No microbial inhibition of respiration was
observed at test concentrations used in this study. The
results of this study show that linalool is of low toxicity to
microorganisms, with an EC50 value of >100 mg/l for respiration
inhibition (at both 30 minute and 3 hour exposure periods).
One key study has been identified which adequately assessed the toxicity of the close the test item analogue, linalool, to microorganisms. This study followed the OECD 209 guideline and was GLP-compliant.
Linalool is a close chemical analogue of the test item,
with similar physico-chemical properties. Results of its testing
for microbial toxicity are therefore deemed suitable to assess
the equivalent toxicity of dihydromyrcenol.
No microbial inhibition of respiration was observed at the
test concentrations used in the linalool key study, suggesting
dihydromyrcenol is of low toxicity to microorganisms, with an EC50
value of >100 mg/l for respiration inhibition (at both 30 minute
and 3 hour exposure times).
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