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EC number: 270-658-3
CAS number: 68475-70-7
A complex combination of hydrocarbons obtained by the fractionation pyrolysis at 816°C (1500°F) of naphtha and raffinate. It consists predominantly of aromatic hydrocarbons having carbon numbers predominantly in the range of C6 through C8, including benzene.
Data on Short Term Toxicity to Fish was
available for 2 streams within this Category. The toxicity range for 96h
LL50 was 1.1 - 5.6mg/L (WAF).
short term toxicity to fish data came from ExxonMobil (2003).
No 68513-69-9 and 68921-67-5:
The 96-hour LL50 was reported to be 1.1 mg/L. LC50 was reported to be
1.0 mg/L. This study is GLP compliant and follows a standard guideline.
It is considered reliable and suitable for use as a key study. Although
the LC50 was reported to be 1.0 mg/L, as
the test substance is a hydrocarbon stream with various components
reporting a measured concentration does not relate to a concentration of
the raw stream. The results reported
as WAF which better represent the potential toxicity of the test
substance have been used instead.
The 96-hour LC50 was reported to be 4.4 mg/L and the 96-hour LL50 was
5.6 mg/L. This study follows a standard guideline and is GLP compliant.
There were some deviations from the protocol but these did not affect
the outcome of the study. This study is considered acceptable for use as
a supporting study.
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