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EC number: 905-588-0
CAS number: -
The lowest 96 hour LC50 is 2.6 mg/L for p-xylene.
Data are available on the acute toxicity of
each of the xylene isomers and ethylbenzene to fish. The studies by
Galassi et al (1988), Springborn (1994) and DiMarzio et al (2004) follow
OECD 203, whilst Holcombe et al (1987) used a flow through system to
expose different species simultaneously. Galassi et al (1988),
Springborn (1994) and Holcombe et al (1987) used a standard test
species, whilst DiMarzio et al (2004) tested a non-standard freshwater
fish. All studies included analytical confirmation of the exposure
concentrations. The result from Galassi et al (1988) is also the lowest
result listed in the EU RAR (ECB 2007) and the Draft Screening
Assessment Report (Environment Canada 2014) for acute toxicity of
ethylbenzene to fish.
The 96 hour LC50 results reported from these
studies are very similar, with a range of 2.6 -11.23 mg/L. The lowest
result will be used in the risk assessment.
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