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EC number: 701-241-0
CAS number: -
Reaction Products of C3 alcohols and
C3 alkenes obtained as
by-products from the manufacture of propan-2-ol by hydration of propylene
is a UVCB stream, therefore PNECs cannot be derived by conventional
means, that is by applying an assessment factor to whole stream
ecotoxicity data. Instead, the PNEC has been based on the constituent of
the stream considered to exert the greatest effect in the aquatic
environment, taking into account ecotoxicity and typical concentration.
For this stream, C9, n and iso- paraffins, were found to be the most
significant constituent and so, to present a worst case, the PNEC for
the stream will be based on this class of substance.
To calculate a PNEC for C9 paraffins,
the HC5 QSAR equation (Di Toro et al, 2000a, 2000b, McGrath and Di Toro
2004, McGrath and Di Toro 2009, Redmann et al 2009) was selected. This
model calculates an HC5 based on average physical chemical properties of
the C9 iso, n paraffin hydrocarbon block and has been derived using a
range of organisms (47 species) in the training set including plants,
invertebrates and fish, both fresh and marine.
The 96-hour LL50 for fish is 18 mg/L. For aquatic invertebrates the
48-hour EL50 is 35 mg/L. The lowest 72-hour EL50 for algae is 160 mg/L
for both biomass and growth. The EC50 for microorganisms was > 320 mg/L.
All these toxicity values are based on the nominal loading concentration
of the test material. Note that none of the LL50 or EL50 acute test
results were less than 1 mg/L.
In accordance with column 2 of REACH Annex IX, the long-term testing on
aquatic species does not need to be conducted as the chemical safety
assessment according to Annex I has not indicated a need to investigate
further the long-term effects on aquatic organisms. Chronic toxicity of
IPE for classification purposes was assumed based upon the lack of ready
biodegradability and an estimated log Kow > 4. Overall, the
environmental hazard classification for IPE is an Aquatic Chronic
Category 3 because acute toxicity data falls within 10 – 100 mg/L and
due to persistence and bioaccumulation potential .
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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