Registration Dossier
Registration Dossier
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EC number: 240-178-9 | CAS number: 16039-53-5
Distribution modelling
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:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: standard routines
Data source
Reference
- Reference Type:
- other company data
- Title:
- Unnamed
- Year:
- 2 009
- Report date:
- 2009
Materials and methods
- Model:
- calculation according to Mackay, Level III
- Calculation programme:
- LEVEL3B.BAS, Centre for Environmental Modelling and Chemistry, Trent University, Canada, adapted to MATLAB
- Media:
- other: air - soil - water - sediment
Test material
- Reference substance name:
- L-(+)-lactic acid
- EC Number:
- 201-196-2
- EC Name:
- L-(+)-lactic acid
- Cas Number:
- 79-33-4
- IUPAC Name:
- 2-hydroxypropanoic acid
- Reference substance name:
- Lactic acid
- EC Number:
- 200-018-0
- EC Name:
- Lactic acid
- Cas Number:
- 50-21-5
- IUPAC Name:
- 2-hydroxypropanoic acid
Constituent 1
Constituent 2
Results and discussion
Percent distribution in media
- Air (%):
- 0.06
- Water (%):
- 99.93
- Soil (%):
- 0
- Sediment (%):
- 0
Applicant's summary and conclusion
- Conclusions:
- Lactic acid will partition predominantly to the aqueous compartment.
- Executive summary:
A level III Fugacity calculation was performed for lactic acid with a version of 'LEVEL3B.BAS', as downloaded from the website of Trent University, Canada, adapted for MATLAB. A fugacity calculation clearly shows that lactic acid will remain in the aqueous compartment and be degraded there. Under the default compartment sizes used in the LEVEL3.BAS model, > 99.8 % of the amount of lactic acid present in the system is found in water.
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