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EC number: 287-401-6
CAS number: 85507-79-5
Phototransformation in air
of the substance in the atmosphere was calculated using the computer
program AOPWIN (v 1.92). It is predicted that the substance will be
degraded in the atmosphere by reaction with photochemically-produced
hydroxyl radicals. The half-life for this reaction in air is estimated
to be approximately 13 hours
In accordance with REACH Regulation
1907/2006, Annex VIII, Column 2 hydrolysis as a function of pH does not
need to be determined as the substance can be regarded as readily
of the substance against hydrolysis was calculated using the computer
program HYDROWIN (v 2.00).A base-catalysed second-order hydrolysis rate
constant of 0.03486 L/(mol-sec) at 25 deg C was estimated using a
structure estimation method. This corresponds to half-lives of 6.3 years
at pH 7 and 230.2 days at pH 8.
Ready biodegradability has been determined
with a non adapted activated sludge in the Modified Sturm test. The
substance reached the 10% level (beginning of biodegradation) after 9
days. The test item did not reach the 60% pass level within the
10-day-window, but after 24 days. The substance is regarded, as a
minimum, as inherently biodegradable and can be regarded as readily
biodegradable though failing the 10 -day window criterium.
With adapted sludge, primary degradation in
excess of 99% occurred over 28 days and ultimate degradation, measured
as CO2 evolution, was 76% after 28 days.
In accordance with REACH Regulation
1907/2006/EC (Annex IX - 184.108.40.206, 220.127.116.11, 18.104.22.168 - column 2)
simulation tests of biodegradation in water, sediment and soil do not
need to be conducted.
BCF has been calculated using the
computer program BCFBAF (v3.01). It is predicted that the substance has
a BCF of 153 L/kg wet weight.
The adsorption coefficient (Koc) on
soil and on sewage sludge using high performance liquid chromatography
(HPLC) has been estimated andadsorption coefficients estimated to be log
Koc,soil = 21.41 and log Koc, sewage sludge = 23.21. These values
correspond to a Koc,soil = 2.582E21 and Koc,sewage sludge = 1.642E23.
The McCall classification scheme classifies the substance as immobile in
soil (Koc > 5000).
Henry's Law constant
The Henry's Law constant was estimated using
the software HENRYWIN
(v3.20). The value of 6.69 Pa m³/mol indicates that the substance
is moderately volatile from surface water.
in environmental compartments was calculated using a Fugacity model
according to Mackay, Level III. Distribution in various environmental
compartments is estimated as: Air - 0.413%;
Water - 3.5%; Soil - 27.2% and Sediment - 68.9%.
Sediment and soil are therefore considered
to be the major target compartments.
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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