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EC number: 271-974-4
CAS number: 68647-86-9
Testing of toxicity to soil microorganisms for charcoal is not required (see "discussion" below).
shell is highly insoluble in water (see IUCLID section 4.8) and the
potential of charcoal, coconut shell to become adsorbed is extremely low
(log Koc= 0.661; see IUCLID section 5.4.1). In addition,
waiving of terrestrial tests can be justified by the fact that charcoal,
coconut shell (from forest burning and forest clearing) is and was used
as a mean of fertilisation of soil. Thus a positive effect to soil and
its organisms can be assumed instead. The only reason to assume a
negative effect would be by indirect effects through substances,
elements, metals, polycyclic aromatic hydrocarbons (PAHs) being bound to
the charcoal itself ("charcoal contaminations"). These contaminations
(either as carry-over from the original source e.g. wood or from the
production process e.g. burning) might be toxic to test organisms as
soon as they are washed out of the charcoal. As long as these
contaminations are low, a risk to organisms of either type can not be
assumed. The present data demonstrate that a significant contamination
of charcoal, coconut shell with critical contaminants has not to be
expected according to GC-MS results from charcoal as such and an organic
extract of charcoal, only traces of some volatile organic compounds were
detectable at room temperature (see IUCLID section 8).
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