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Registration Dossier
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EC number: 249-978-2 | CAS number: 29964-84-9
Distribution modelling
Administrative data
- Endpoint:
- distribution modelling
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- accepted calculation method
Data source
Reference
- Reference Type:
- other company data
- Title:
- Unnamed
- Year:
- 2 013
Materials and methods
- Model:
- calculation according to Mackay, Level III
- Calculation programme:
- A Mackay level III distribution was calculated using the EPI Suite ver. 4.10 (US-EPA, 2008)
- Release year:
- 2 011
- Media:
- air - biota - sediment(s) - soil - water
Test material
- Reference substance name:
- Isodecyl methacrylate
- EC Number:
- 249-978-2
- EC Name:
- Isodecyl methacrylate
- Cas Number:
- 29964-84-9
- Molecular formula:
- C14H26O2
- IUPAC Name:
- 2-methylnonyl 2-methylprop-2-enoate
- Test material form:
- liquid
Constituent 1
Study design
- Test substance input data:
- Distributions were calculated with the following factors:
Level III Fugacity Model (Full-Output):
=======================================
Chem Name : 2-Propenoic acid, 2-methyl-, isodecyl ester
Molecular Wt: 226.36
Henry's LC : 0.0175 atm-m3/mole (calc VP/Wsol)
Vapor Press : 0.0117 mm Hg (user-entered)
Log Kow : 7 (user-entered)
Soil Koc : 1.71e+003 (KOCWIN MCI method)
Results and discussion
Percent distribution in media
- Other distribution results:
- The potential environmental distribution of Isodecyl methacrylate obtained from generic level III fugacity model under two emission scenarios is
shown in the table.
The results show that if Isodecyl methacrylate is released mainly into air, it mainly remains in the air. And if it is released into water, it also mainly
remains in the water. Isodecyl methacrylate is predicted to partition to a small degree into soil and sediment.
Compartment Amount %
Release 100% to air Release 100% to water
Air 99.1 1.64
Water 0.155 94.8
Soil 0.74 0.0123
Sediment 0.00587 3.58
Any other information on results incl. tables
Level III Fugacity Model (Full-Output):
=======================================
Chem Name : 2-Propenoic acid, 2-methyl-, isodecyl ester
Molecular Wt: 226.36
Henry's LC : 0.0175 atm-m3/mole (calc VP/Wsol)
Vapor Press : 0.0117 mm Hg (user-entered)
Log Kow : 7 (user-entered)
Soil Koc : 1.71e+003 (KOCWIN MCI method)
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 99.1 8.18 1000
Water 0.155 360 0
Soil 0.74 720 0
Sediment 0.00587 3.24e+003 0
Fugacity Reaction Advection Reaction Advection
(atm) (kg/hr) (kg/hr) (percent) (percent)
Air 1.14e-011 894 106 89.4 10.6
Water 4.26e-012 0.0318 0.0165 0.00318 0.00165
Soil 8.19e-012 0.0759 0 0.00759 0
Sediment 2.89e-012 0.000134 1.25e-005 1.34e-005 1.25e-006
Persistence Time: 10.6 hr
Reaction Time: 11.9 hr
Advection Time: 101 hr
Percent Reacted: 89.4
Percent Advected: 10.6
Half-Lives (hr), (based upon Biowin (Ultimate) and Aopwin):
Air: 8.176
Water: 360
Soil: 720
Sediment: 3240
Biowin estimate: 2.839 (weeks )
Advection Times (hr):
Air: 100
Water: 1000
Sediment: 5e+004
Level III Fugacity Model (Full-Output):
=======================================
Chem Name : 2-Propenoic acid, 2-methyl-, isodecyl ester
Molecular Wt: 226.36
Henry's LC : 0.0175 atm-m3/mole (calc VP/Wsol)
Vapor Press : 0.0117 mm Hg (user-entered)
Log Kow : 7 (user-entered)
Soil Koc : 1.71e+003 (KOCWIN MCI method)
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 1.64 8.18 0
Water 94.8 360 1000
Soil 0.0123 720 0
Sediment 3.58 3.24e+003 0
Fugacity Reaction Advection Reaction Advection
(atm) (kg/hr) (kg/hr) (percent) (percent)
Air 4.08e-012 321 37.8 32.1 3.78
Water 5.63e-008 421 219 42.1 21.9
Soil 2.94e-012 0.0272 0 0.00272 0
Sediment 3.81e-008 1.77 0.165 0.177 0.0165
Persistence Time: 231 hr
Reaction Time: 310 hr
Advection Time: 899 hr
Percent Reacted: 74.3
Percent Advected: 25.7
Half-Lives (hr), (based upon Biowin (Ultimate) and Aopwin):
Air: 8.176
Water: 360
Soil: 720
Sediment: 3240
Biowin estimate: 2.839 (weeks )
Advection Times (hr):
Air: 100
Water: 1000
Sediment: 5e+004
Applicant's summary and conclusion
- Conclusions:
- Using a valid modeling method, if Isodecyl methacrylate is released into air, it mainly remains in the air; if it is released into water, it mainly remains in the water. Isodecyl methacrylate is predicted to partition to a small degree into soil and sediment.
- Executive summary:
Using a valid modeling method, if Isodecyl methacrylate is released into air, it mainly remains in the air; if it is released into water, it mainly remains in the water. Isodecyl methacrylate is predicted to partition to a small degree into soil and sediment.
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