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EC number: 905-588-0
CAS number: -
The 56 day NOEC for mortality and behavioural effects is >1.3 mg/L for Salmo gairdneri exposed to mixed xylenes.
Walsh et al (1977) exposed adult fish to mixed xylenes for 56 days in a
flow through system. Test concentrations were confirmed by analytical
monitoring throughout the exposure period. No exposure linked mortality
or changes in behaviour were observed at any of the test concentrations
(NOEC >1.3mg/L). This study predates the implementation of GLP and study
guidelines and deviates significantly from standard chronic fish
toxicity tests. In particular, the use of adult fish in the chronic test
and the choice of endpoints may result in a less sensitive result than
if an embryo-larval or juvenile fish test had been conducted. However,
it is well described and is acceptable for use as a key study bearing
these restrictions in mind.
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