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EC number: -
CAS number: -
Alkylated naphthalene, EC Number 700-826-8, is a close structural analog
of the Alkylnaphthalene being assessed in this dossier. The substances
have similar chemical and physical properites and therefore the
biodegradation testing for Alkylated naphthalene, EC Number 700-826-8
can be used as read-across to the alkylnaphthalene in this dossier.
Alkylated Naphthalene was not readily biodegradable under the conditions
of the modified Sturm test (OECD Guideline 301 B (Ready
Biodegradability: CO2 Evolution). The substance biodegraded 1 - 2% in 28
days. A study was also conducted to determine inherent biodegradability
with Alkylated naphthalene. The study was performed according to the
modified test method based on the OECD guideline No. 310, 2006. The
relative biodegradation values calculated from the measurements
performed during the test period revealed no significant biodegradation
of Alkylated naphthalene. Thus, Alkylated naphthalene is designated as
not inherently biodegradable.
A substance with same
EC number (410-190-0) identified during the Inquiry Process reported a
ready biodegradation study.
This study also
demonstrated that the substance is not readily biodegradable.
Based on the information from the two ready biodegradation studies (28 d
degradation: <10%) described above and an inherent biodegradation test
(56 d degradation: 4.4 %) with the analog Alkylated naphthalene and, in
view of the very low water solubility (<2.0 µg/l), it is unlikely
hydrolyze in the environment. It is therefore assumed that the test
substance is persistent in the environment as no biotic degradation was
observed. Further biodegradation testing would probably come to the same
results. As the chemical safety assessment does not indicate a hazard
for the environment, further simulation tests are neither necessary nor
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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