Registration Dossier

Administrative data

Endpoint:
distribution modelling
Type of information:
(Q)SAR
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: US EPA accepted QSAR method for organic chemicals properties assessment.
Justification for type of information:
QSAR prediction: migrated from IUCLID 5.6

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2009

Materials and methods

Model:
calculation according to Mackay, Level III
Calculation programme:
EPI Suit v.4.00
Release year:
2 009
Media:
air - biota - sediment(s) - soil - water

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Any other information on results incl. tables

Distribution of tributyl phosphate in environment as predicted level III fugacity model

 

Modelling Scenario, Emissions (kg/hour)

Environmental Media

 

Persistence time, hr

Amount reacted;

Amount advected

Air

Water

Soil

Sediment

Release to air, water and soil:

Air: 1000 kg/hr

Water: 1000 kg/hr

Soil: 1000 kg/hr

0.525

27.1

71

1.35

283 hours

Reacted: 90.8%

Advected: 9.18%

Release to air:

Air: 1000 kg/hr

Water: 0 kg/hr

Soil: 0 kg/hr

 

45.5

7.04

47.1

0.35

9.76 hours

Reacted: 95.5%

Advected: 4.51%

Release to water:

Air 0 kg/hr

Water 1000 kg/hr

Soil 0 kg/hr

0.00604

95.3

0.00626

4.74

241 hours

Reacted: 77%

Advected: 23%

Release to soil:

Air 0 kg/hr

Water 0 kg/hr

Soil 1000 kg/hr

0.0004

0.103

99.9

0.005

599 hours

Reacted: 99.9%

Advected: 0.645%

Release to air and water:

Air 1000 kg/hr

Water 1000 kg/hr

Soil 0 kg/hr

1.78

91.8

1.84

4.56

125 hours

Reacted: 86.3%

Advected: 13.7%

Release to air and soil:

Air 1000 kg/hr

Water 0 kg/hr

Soil 1000 kg/hr

0.73

0.214

99

0.0107

304 hours

Reacted: 97.7%

Advected: 2.29%

Release to water and soil:

Air 0 kg/hr

Water 1000 kg/hr

Soil 1000 kg/hr

0.00204

27.4

71.3

1.36

420 hours

Reacted: 88.5%

Advected: 11.5%

Applicant's summary and conclusion

Conclusions:
The data on environmental distribution of tributyl phosphate obtained from the level III fugacity model confirms that tributyl phosphate is likely to degrade fast and depending on various emission scenarios, most of tributyl phosphate will be degraded within days-weeks.