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EC number: 701-068-0
CAS number: 2156592-58-2
Primary alkyl amines released into the atmosphere are likely to be
degraded by reaction with hydroxyl radicals, with a half-life around 7.5
h.Because there are no important releases into the atmosphere and
volatilisation is expected to be negligible, this removal mechanism is
considered not to be relevant.
Primary alkyl amines are unlikely to undergo photolytical or hydrolytic
degradation. Thus abiotic degradation in the environment is not expected.
Based on the available studies on biodegradation, the substances are
estimated to be readily biodegradable, fulfilling the 10-days-window
An OECD 307 aerobic soil transformation study (3 soils) was carried out
with [1-14C]-Hexadecanamine (Harlan, 2010). Although this C16 amine is
strongly sorbing to soil (median Kpsoil of 3875 L/kg at lowest measured
concentration) half-lives between 8.1 and 9 days at 20 degree C were
determined. The median Half-life of 8.9 d at 20 degree C corresponds to
a median Half-life of 16.9 d at an environmental temperature of 12
degree C (see REACH Guidance).
No other simulation tests for degradation rates under environmental
conditions are available.
Therefore, for the aquatic environment the default value suggested by
the REACH Guidance based on ready biodegradability results is used.
For aerobic sediments, based on the result of the study on aerobic
transformation in soil (see IUCLID Chapter 5.2.3) and in line with the
REACH Guidance R16. (2016) A.16 -3.2.2, a DT50 freshwater sediment
(aerobic) of 16.9 d at 12 deg. C would be assigned (value equal to
half-life in soil). In the table below, the degradation rates used for
the exposure assessment are summarized.
rates used in the exposure assessment:
N-Primary alkyl amines are rapidly metabolised
not only by microorganisms but also by other biota like 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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