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EC number: 248-130-9
CAS number: 26952-13-6
Based on read across some components of alkenes C11/13/14 are acutely toxic to algae at concentrations below their limit of solubility.
Data were read across from
dodec-1-ene. The toxicity of dodec-1-ene toPseudokirchneriella
subcapitatawas investigated in an OECD 201 test (Brixham
Environmental Laboratories, 2010). Due to the low solubility of the test
substance the study used a solvent carrier. The test substance was mixed
with the solvent before being added to the dilution water. It was then
stirred for 48 hours under sealed conditions to maximise the exposure
concentrations. The test was carried out in sealed test vessels to
minimise the loss of the test substance.
At the lower loading rates
(0.032 - 0.25 mg/l) the measured concentrations were below the limit of
detection (0.01 mg/l) throughout the test. No effects were seen at these
loading rates. A 96% effect was observed at 0.5 mg/l, the next highest
loading rate and a similar level of effect was also observed at the 1
and 2 mg/l loading rates. Exposure concentrations at the 0.5 mg/l
loading rate were at the limit of detection at the start of the exposure
and had dropped below the limit of detection after 72 hours. An EC50 has
therefore not been calculated. Instead the results based on loading rate
are a 72 EC50 of 0.25 - 0.5 mg/l and are interpreted as indicating
effects below the limit of solubility.
Data are also read across
from tetradecene. Hudson (1999) tested the toxicity of tetradecene toSkeletonema
costatumin an ISO 10253 test. Due to the low solubility of the test
substance test organisms were exposed to water accommodated fractions
(WAF) and exposure concentrations were expressed as a loading rate. The
test was conducted with four exposure concentrations up to a maximum
loading rate of 1000 mg/l WAF. The 48 hour EL50 was >1000 mg/l WAF, a
NOELR was not reported.
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