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EC number: 285-597-8
CAS number: 85117-47-1
The registered substance is produced, supplied and marketed in the
presence of a liquid
mineral oil solvent. Removal of this solvent is expected to cause a
change in the equilibrium of the chemical
structure of the alkyrated benzene sulfonates resulting in a degradation
of the chemical structure to a
structure that is not representative of the substance being placed on
the market in the EU. Based on QSAR,
the partition coefficient of the substance is considered to be 22.17.
A partition coefficient in excess of 4.5 is considered to be of concern
as potential for bioaccumulation,
according to screening criteria for bioaccummulation in ECHA guidance
(Chapter R.11 PBT Assessment).
The likely reliability of the log Pow is, however, considered to
diminish above a value of 6, as noted in
Appendix R.11-1 Annex 1 of ECHA guidance on PBT Assessment. Substances
with log Pow between 4.5
and 6 are considered likely to be highly accumulating; however no
substantial bioconcentration is assumed
for compounds having log Pow with values less than 4.5 or greater than
6. For compounds having log Pow
greater than 6, a gradual decrease of the BCF is observed and it has
been hypothesised within the published
literature that a high log Pow is more an effect of solubility than a
tendency of the substance to be lipophilic.
This is further supported by the estimation based on EPIWIN that the BCF
is 70.79, considerably below the
threshold of concern derived by the REACH criteria of 2000 (B) and 5000
Furthermore, controls required for the use of the material are designed
ensure no exposure of the substance
to the aquatic environment removing any opportunity for bioaccumulation.
It is therefore considered that the substance is considered to not have
the potential to bioaccumulate and it is
therefore not scientifically justified to undertake a study in fish.
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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