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EC number: 945-946-3
CAS number: -
Air: No experimental data on the phototransformation of the
substance in air are available. Based on estimation with the QSAR model
AopWin (v1.92), in air the substance undergoes rapid degradation after
reaction with hydroxyl radicals with DT50 values in the range of < 1 day
for both type of constituents using Cas no 38285 -49 -3 and 67634 -09
-7, respectively. This indicates that the substance is not a long-range
transported chemical in air according to the UNECE criteria
No ozone reaction estimations are available for any of the constituents.
These half-lives will not be used for the CSA because these are
calculated and not experimental values. Furthermore, the substance does
not have an ozone depletion potential because it does not contain
halogens and does not have the potential to reach the stratosphere (EU
CLP (ECno 1272/2008 and its updates).
Water: The hydrolysis endpoint is waived as the substance is
qualified as readily biodegradable. Some hydrolysis can be expected
based on the substance’s ester functionality. To be conservative a
hydrolysis half-life of 1 year is used.
The biodegradability is assessed based on read-across from the close
structural analogue Jasmal (Generic CAS# 18871-14-2). For
Jasmal a ready biodegradation study is available according to OECD TG
301F (Manometric Respirometry Test under GLP, Rel. 1). In this study,
Jasmal was biodegraded by 71% at day 28 and considered to be readily
The bioaccumulation of Jessemal
in fish is based on the experimental BCF of the analogue Verdox (CAS#
20298 -69 -5), which was tested in an OECD TG 305, Rel. 1. Steady-state
concentrations of 14C-labelled Verdox were achieved in fish tissues
after 33 days and based on 5% lipid content the BCF was 156 L/Kg.
Terrestrial: The BCF for terrestrial organisms was calculated
using the QSAR of Jager (1998), incorporated in the EUSES model, and
yielded a value of 65.3 L/kg ww.
Transport and distribution:
Adsorption / Desorption potential: For Jessemal the Koc of 760 is
derived based on read-across from the close structural analogue Jasmal
(CAS# 18871-14-2). For Jasmal, the Koc was tested in an HPLC estimation
method according to OECD TG 121 (Rel. 1). The log Koc values of the
major components range from 2.42 - 2.88 (Koc: 260 - 760). The log Koc
values of the minor components range from 2.37 - 2.51 (Koc ranges from
240 to 320). The Koc of 760 (log Koc 2.88) is reported as key value for
chemical safety assessment covering also the higher values.
The Henry's law constant is calculated using the equation from
EUSES using a weighted average molecular weight of 226 g/mole, and the
experimentally determined (averaged) vapour pressure of 0.38 Pa (at 24
°C) and water solubility of 714.1 mg/L (at 24 °C). The Henry's Law
constant at environmental temperature (12 °C) is calculated to be 0.061
Pa·m³/mol. The substance is not expected to volatilise from water to a
Based on Level III environmental distribution modelling using
EPISUITE for all constituents (assuming equal and continuous releases to
air, water and soil), using the EPISuite default physico-chemical
parameters for each constituent as input, it is estimated that the
majority of the constituents released to the environment will partition
mainly into soil (72%) and water (27%) with minor amounts to air (≤2%)
and sediment (<1%) using average values of the two main Cas no. 38285-49
-3and 67634-09 -7, respectively.
The SimpleTreat model,
which is incorporated in EUSES, simulates the distribution of the
substance in a Sewage Treatment Plant (STP). Based on the weighted
average molecular weight of 226 g/mole, a Koc value of 760 L/kg, a
vapour pressure of 0.38 Pa (at 24 °C) and a water solubility of 714.1
mg/L (at 24 °C), and the qualification as readily biodegradable, the
model predicts that 81.5% of the substance will be degraded and that
11.9, 6.5%, and 0.024% will partition to water, sewage sludge and air,
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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