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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:
supporting 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:
2009
Report date:
2009

Materials and methods

Model:
calculation according to Mackay, Level III
Calculation programme:
US EPA EPI Suite (v4.00), program component Level III fugacitiy model
Release year:
2 009
Media:
other: air - sediment - soil - water

Test material

Constituent 1
Chemical structure
Reference substance name:
Bis(isopropyl)naphthalene
EC Number:
254-052-6
EC Name:
Bis(isopropyl)naphthalene
Cas Number:
38640-62-9
Molecular formula:
C16H20
IUPAC Name:
bis(isopropyl)naphthalene
Details on test material:
- Name of test material (as cited in study report): Diisopropylnaphthalene (DIPN); Naphthalene, bis(1-methylethyl)-

Study design

Test substance input data:
- Molar mass: 212.34
- Data temperature: 25°C
- Water solubility: 0.125 mg/L
- Vapour pressure: 0.00225 mm Hg (ca. 0.3 Pas)
- log Pow: 6.08
- Mineral matter - water partition coefficient
- Melting point: -40°C
- Reaction half-life estimates for
- Air: 7.651 hr
- Water: 900 hr
- Soil: 1800 hr
- Sediment: 8100 hr
- Suspended sediment:
- Aerosols:
- Aquatic biota:

Results and discussion

Percent distribution in media

Air (%):
0.45
Water (%):
7.8
Soil (%):
76.7
Sediment (%):
15

Any other information on results incl. tables

Level III Fugacity Model

 

 

Mass Amount
[%]

Half-Life
[hr]

Emissions
[kg/hr]

Air

0.448

7.65

1000

Water

7.8

900

1000

Soil

76.7

1,800

1000

Sediment

15

8,100

0

 

Persistence Time 1,110 hr

Applicant's summary and conclusion

Conclusions:
Emissions of diisopropylnaphthalene will distribute prevalently in soil (76.7%) and to a much lesser degree in sediment (15%) and in water (7.8%). The fraction in air is minimal (0.448%).
The estimated persistence time is 1,110 hr (46 d).