Registration Dossier

Environmental fate & pathways

Distribution modelling

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Administrative data

Endpoint:
distribution modelling
Adequacy of study:
other information
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Based on an acceptable computer model.

Data source

Reference
Reference Type:
other: modeling
Title:
Estimation Programs Interface Suite for Microsoft® Windows, Version 3.11. United States Environmental Protection Agency, Washington, DC, USA.
Author:
U.S. EPA
Year:
2000

Materials and methods

Model:
calculation according to Mackay, Level III
Release year:
2 006

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Any other information on results incl. tables

Level III Fugacity Model (Full-Output):
=======================================
  Chem Name   : Methanethiol
  Molecular Wt: 48.1
  Henry's LC  :  0.00312 atm-m3/mole (Henry database)
  Vapor Press : 1.51e+003 mm Hg  (user-entered)
  Log Kow     :   0.78  (Kowwin program)
  Soil Koc    :     2.47  (calc by model)

            Mass Amount         Half-Life    Emissions
                 (percent)                (hr)         
(kg/hr)
   Air              99.3                   7.8           
1000       
   Water         0.695                 360              0   
      
   Soil            0.0519                360              0 
        
   Sediment  0.00122         1.44e+003        0          

                    Fugacity     Reaction    Advection  
Reaction     Advection
                      (atm)          (kg/hr)        (kg/hr) 
    (percent)      (percent)
   Air           5.14e-011        899            101        
   89.9              10.1      
   Water       2.3e-011        0.136        0.0709       
0.0136         0.00709   
   Soil          4.96e-011      0.0102           0          
  0.00102            0         
   Sediment  1.9e-011     5.98e-005   2.48e-006   5.98e-006 
 2.48e-007 
        
   Persistence Time: 10.2 hr
   Reaction Time:      11.3 hr
   Advection Time:     101 hr
   Percent Reacted:    89.9
   Percent Advected:  10.1

   Half-Lives (hr), (based upon Biowin (Ultimate) and
Aopwin):
      Air:           7.802
      Water:      360
      Soil:          360
      Sediment: 1440
        Biowin estimate: 3.093  (weeks)

   Advection Times (hr):
      Air:           100
      Water:      1000
      Sediment: 5e+004

Applicant's summary and conclusion