Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

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

Constituent 1
Chemical structure
Reference substance name:
(1-methylethyl)-1,1'-biphenyl
EC Number:
247-156-8
EC Name:
(1-methylethyl)-1,1'-biphenyl
Cas Number:
25640-78-2
Molecular formula:
C15H16
IUPAC Name:
(1-methylethyl)-1,1'-biphenyl
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%).