Registration Dossier

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, well-documented calculation method

Data source

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

Materials and methods

Model:
calculation according to Mackay, Level III
Calculation programme:
Fugacity level III model within the program US EPA EPI Suite v4.11 (US EPA 2012. Estimation Programs Interface Suite™ for Microsoft® Windows, v 4.11; United States Environmental Protection Agency, Washington, DC, US). The model within EPI Suite is a direct adaption of the methodology of Mackay (Mackay et al 1996 and Mackay 1991).
Release year:
2 012
Media:
other: air-sediment-soil-water

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Name of test material (as cited in study report): (1-Methylethyl)-1,1'-biphenyl; Isopropylbiphenyl

Study design

Test substance input data:
Molecular Wt: 196.29
Henry's LC : 0.00171atm-m3/mole (user entered, measured)
Vapour Press : 0.00572 mm Hg (user entered, measured)
Log Kow : 5.33 (user entered, measured)
Soil Koc : 2.51e+004 (KOCWIN MCI method)

Results and discussion

Percent distribution in media

Air (%):
1.35
Water (%):
7.91
Soil (%):
79.5
Sediment (%):
11.2

Any other information on results incl. tables

Persistence Time:       1060 hr

Reaction Time:            1370 hr

Advection Time:        4630 hr

Percent Reacted:         77.2

Percent Advected:       22.8

 

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

Air:                      26.35

Water:                   900

Soil:                     1800

Sediment:          8100

Biowin estimate: 2.713 (weeks-month)

 

Advection Times (hr):

Air:                100

Water:            1000

Sediment:      5e+004

Applicant's summary and conclusion

Conclusions:
(1-Methlyethyl)-1,1'-biphenyl will predominantly be distributed in soil (ca. 80%). Much lesser percentages are present in sediment and water (ca. 11% and ca. 8% respectively). Fraction in air is minor (2.4%).