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Environmental fate & pathways

Distribution modelling

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Administrative data

Endpoint:
distribution modelling
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Accepted calculation method.

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2013

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:
2 008
Media:
air - biota - sediment(s) - soil - water

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Test substance input data:
Distributions were calculated with the following factors:
ethyl methacrylate
molecular weight: 114.15

Physical Property Inputs:
Log Kow (octanol-water): 1.87
Boiling Point (deg C) : 118.20
Melting Point (deg C) : -75.00
Vapor Pressure (mm Hg) : 15
Water Solubility (mg/L): 4690
EPIWIN inputs:
Henry's LC : 0.000573 atm-m3/mole (calc VP/Wsol)
Soil Koc : 16.7 (KOCWIN MCI method)

Results and discussion

Percent distribution in media

Other distribution results:
The potential environmental distribution of ethyl methacrylate obtained from generic level III fugacity model under two  emission scenarios is shown in the table. 
The results show that if ethyl 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.  Very little is predicted to be partitioning into soil and sediment.
Compartment                         Amount %                              
 Release 100% to air     Release 100% to water         
Air                          96.4                          2.3
Water                         3.1                       97.4
Soil                         0.5                         0.0
Sediment                0.0                        0.3

Any other information on results incl. tables

Level III Fugacity Model (Full-Output):

=======================================

Chem Name : 2-Propenoic acid, 2-methyl-, ethyl ester

Molecular Wt: 114.15

Henry's LC : 0.000573 atm-m3/mole (Henry database)

Vapor Press : 15 mm Hg (user-entered)

Log Kow : 1.87 (user-entered)

Soil Koc : 16.7 (KOCWIN MCI method)

   Mass Amount (percent)  Half-Life (hr)    Emissions (kg/hr)
 Air  6.04  10.8    1000
 Water  48.8  360  1000
 Soil  45 720   1000
 Sediment  0.124  3.24e+003  0

             

   Fugacity (atm)  Reaction (kg/hr)  Advection (kg/hr)  Reaction (percent)  Advection (percent)
 Air  6.11e-011  1.83e+003  285  61.2  9.51
 Water  5.79e-009    444  231  14.8  7.69
 Soil  8.42e-008  205  0  6.83  0
 Sediment  5.24e-009  0.125  0.0117  0.00416  0.000389
    

Persistence Time: 158 hr

Reaction Time: 190 hr

Advection Time: 916 hr

Percent Reacted: 82.8

Percent Advected: 17.2

Half-Lives (hr), (based upon Biowin (Ultimate) and Aopwin):

Air: 10.78

Water: 360

Soil: 720

Sediment: 3240

Biowin estimate: 3.087 (weeks )

Advection Times (hr):

Air: 100

Water: 1000

Sediment: 5e+004

Level III Fugacity Model (Full-Output):

=======================================

Chem Name : 2-Propenoic acid, 2-methyl-, ethyl ester

Molecular Wt: 114.15

Henry's LC : 0.000573 atm-m3/mole (Henry database)

Vapor Press : 15 mm Hg (user-entered)

Log Kow : 1.87 (user-entered)

Soil Koc : 16.7 (KOCWIN MCI method)

 Mass Amount (percent)  Half-Life (hr)    Emissions (kg/hr)
 Air  96.4  10.8  1000
 Water  3.12  360  0
 Soil  0.454  720  0
 Sediment  0.0079  3.24e+003  0

 Fugacity (atm)  Reaction (kg/hr)  Advection (kg/hr)  Reaction (percent)  Advection (percent)
 Air  2.88e-011  864 134  86.4 13.4
 Water  1.09e-011  0.838  0.436  0.0838  0.0436
 Soil  2.51e-011 0.0609 0 0.00609  0
 Sediment  9.88e-012  0.000236  2.2e-005  2.36e-005  2.2e-006

Persistence Time: 13.9 hr

Reaction Time: 16.1 hr

Advection Time: 103 hr

Percent Reacted: 86.5

Percent Advected: 13.5

Half-Lives (hr), (based upon Biowin (Ultimate) and Aopwin):

Air: 10.78

Water: 360

Soil: 720

Sediment: 3240

Biowin estimate: 3.087 (weeks )

Advection Times (hr):

Air: 100

Water: 1000

Sediment: 5e+004

Level III Fugacity Model (Full-Output):

=======================================

Chem Name : 2-Propenoic acid, 2-methyl-, ethyl ester

Molecular Wt: 114.15

Henry's LC : 0.000573 atm-m3/mole (Henry database)

Vapor Press : 15 mm Hg (user-entered)

Log Kow : 1.87 (user-entered)

Soil Koc : 16.7 (KOCWIN MCI method)

 Mass Amount (percent)  Half-Life (hr)    Emissions (kg/hr)
 Air  2.29  10.8  0
 Water  97.4  360  1000
 Soil  0.0108  720  0
 Sediment  0.247  3.24e+003  0

 Fugacity (atm)  Reaction (kg/hr)  Advection (kg/hr)  Reaction (percent)  Advection (percent)
 Air  1.08e-011  324 50.4  32.4 5.04
 Water  5.37e-009  412  214  41.2  21.4
 Soil  9.39e-012 0.0228 0 0.00228  0
 Sediment  4.85e-009  0.116  0.0108  0.0116  0.00108

Persistence Time: 220 hr

Reaction Time: 298 hr

Advection Time: 831 hr

Percent Reacted: 73.6

Percent Advected: 26.4

Half-Lives (hr), (based upon Biowin (Ultimate) and Aopwin):

Air: 10.78

Water: 360

Soil: 720

Sediment: 3240

Biowin estimate: 3.087 (weeks )

Advection Times (hr):

Air: 100

Water: 1000

Sediment: 5e+004

Level III Fugacity Model (Full-Output):

=======================================

Chem Name : 2-Propenoic acid, 2-methyl-, ethyl ester

Molecular Wt: 114.15

Henry's LC : 0.000573 atm-m3/mole (Henry database)

Vapor Press : 15 mm Hg (user-entered)

Log Kow : 1.87 (user-entered)

Soil Koc : 16.7 (KOCWIN MCI method)

 Mass Amount (percent)  Half-Life (hr)    Emissions (kg/hr)
 Air  4.2  10.8  0
 Water  6.88 360   0
 Soil  88.9  720  1000
 Sediment  0.0174  3.24e+003  0

 Fugacity (atm)  Reaction (kg/hr)  Advection (kg/hr)  Reaction (percent)  Advection (percent)
 Air  2.15e-011  647 101  64.7 10.1
 Water  4.13e-010  31.7  16.5  3.17  1.65
 Soil  8.42e-008 205 0 20.5  0
 Sediment  3.73e-010  0.0089 0.000833   0.00089  8.33e-005

Persistence Time: 239 hr

Reaction Time: 271 hr

Advection Time: 2.04e+003 hr

Percent Reacted: 88.3

Percent Advected: 11.7

Half-Lives (hr), (based upon Biowin (Ultimate) and Aopwin):

Air: 10.78

Water: 360

Soil: 720

Sediment: 3240

Biowin estimate: 3.087 (weeks )

Advection Times (hr):

Air: 100

Water: 1000

Sediment: 5e+004

Applicant's summary and conclusion

Conclusions:
Using a valid modeling method, if ethyl  methacrylate is released into air, it mainly remains in the air; if it is released into water, it mainly remains in the water. Very little is predicted to be partitioning into soil and sediment.
Executive summary:

Using a valid modeling method, if ethyl  methacrylate is released into air, it mainly remains in the air; if it is released into water, it mainly remains in the water. Very little is predicted to be partitioning into soil and sediment.