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EC number: 246-690-9
CAS number: 25167-70-8
were derived for freshwater, saltwater, sediment, soil and
micro-organisms using the HC5 model plus statistical extrapolation or
equilibrium partitioning calculations.
information gathered indicates that 2,4,4-trimethylpentene is of low
toxicity to environmental receptors. In the PBT assessment, none of the
studies evaluated exceed the acute LC50 toxicity (T) screening criteria
of <0.1 mg/L. A further evaluation of the data on the basis of the
available NOECs indicates that the criteria in Annex XIII of <0.01 mg/L
for toxicity to aquatic organisms (fresh and marine) is not exceeded in
the invertebrate study which reported a NOEC of 0.16 mg/L. These values
indicate that the toxicity criteria stipulated in Annex XIII would not
be met. Therefore, 2,4,4-trimethylpentene is not considered to be T on
the basis of the environmental screening criterion and there is evidence
that the criterion stipulated in Annex XIII is also not met.
The most conservative values reported are
0.58 mg/L for acute toxicity to fish and 0.16mg/L for the 21 day NOEC
for chronic toxicity to aquatic invertebrates. This would result in a
category 1 acute and chronic hazard to the environment with hazard
statement 'very toxic to aquatic life with long lasting effects' in the
classification and labeling assessment. The M factor would be 1.
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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