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EC number: 203-777-6
CAS number: 110-54-3
available weight of evidence demonstrates that this substance
not absorb light within a range of 290 to 750 nm, the range in which
photolysis occurs. Therefore, direct photolysis will not contribute to
the degradation of this substance in the aquatic environment. Further
testing is not required under Annex XI, section 1.2.
direct photolysis of an organic molecule occurs when it absorbs
sufficient light energy to result in a structural transformation. The
absorption of light in the ultra violet (UV) -visible range, 110-750 nm,
can result in the electronic excitation of an organic molecule. The
stratospheric ozone layer prevents UV light of less than 290 nm from
reaching the earth's surface. Therefore, only light at wavelengths
between 290 and 750 nm can result in photochemical transformations in
conservative approach to estimating a photochemical degradation rate is
to assume that degradation will occur in proportion to the amount of
light wavelengths >290 nm absorbed by the molecule. This substance
contains hydrocarbon molecules that absorb UV light below 290 nm, a
range of UV light that does not reach the earth's surface. Therefore,
this substance does not have the potential to undergo photolysis in
water and soil, and this fate process will not contribute to a
measurable degradative loss of this substance from the environment.
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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