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EC number: 278-770-4
CAS number: 77804-81-0
According to the criteria
set in Annex XI of REGULATION (EC) No 1907/2006 a ready biodegradation
study is scientifically unnecessary based on the following arguments
applied for the Acetolone Pigments. Since it is generally known that
pigments are not or only marginally (bio)degradable, the
Persistance-criterion is accepted for Acetolone pigments.
Therefore only one
biodegradation study was performed. As Acetolone Pigments are of very
poor water solubility, rather inherent than ready biodegradability was
assessed for Pigment Yellow 154 in the Modified MITI Test (II) according
to OECD 302 C. The substance was not inherently biodegradable.
In the preliminary
Hydrolysis study at 50°C and applied buffer pH-values of 4.0, 7.0 and
9.0 no hydrolysis (< 1%) could be observed during the 9 days of the
experiment. The submission substance is regarded hydrolytically stable
under normal environmental conditions.
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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