Registration Dossier
Registration Dossier
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EC number: 247-045-4 | CAS number: 25498-49-1
Toxicity to aquatic plants other than algae
Administrative data
Link to relevant study record(s)
Description of key information
A study in Lemna published in the peer-reviewed literature is available for tripropylene glycol methyl ether.
Key value for chemical safety assessment
Additional information
TPM was incubated with Lemna minor (duck weed) fronds at concentrations of 0, 96.5, 482.5, or 965 µg/ml for 2 to 10 days, extending in some instances up to 28 days. At the highest exposure concentration of 965 µg/ml, TPM produced an initial significant functional impairment in the plants, indicted by depression of all monitored parameters except conductivity. Afterseveral days, a recovery in depressed parameters was noted. This recovery often exceeded baseline levels (overcompensation). Once removed completely from TPM following the initial depression (after 2-days exposure), plants recovered quickly. Daughter generations of mother fronds exposed to 965 µg/ml showed heritable effects. No effects were noted at lower concentrations. TPM did not accumulate in plant tissues. The LOEC for TPM is 965 µg/ml and the NOEC is 482.5 mg/ml. |
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