Registration Dossier
Registration Dossier
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EC number: 207-975-3 | CAS number: 503-74-2
Distribution modelling
Administrative data
- Endpoint:
- distribution modelling
- Type of information:
- experimental study
- Adequacy of study:
- disregarded due to major methodological deficiencies
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: 4b: Secondary literature
Data source
Referenceopen allclose all
- Reference Type:
- secondary source
- Title:
- Unnamed
- Year:
- 2 003
- Report date:
- 2003
- Reference Type:
- publication
- Title:
- Unnamed
- Year:
- 1 992
- Report date:
- 1992
- Reference Type:
- review article or handbook
- Title:
- Handbook of Chemical Property Estimation Methods
- Author:
- Lyman WJ et al.
- Year:
- 1 990
- Bibliographic source:
- Washington, DC: Amer Chem Soc pp. 4-9, 5-10, 15-1 to 15-29 (cited from HSDB 2003)
- Report date:
- 1990
Materials and methods
- Model:
- other: other (measurement)
- Media:
- water - air
Test material
- Reference substance name:
- Isovaleric acid
- EC Number:
- 207-975-3
- EC Name:
- Isovaleric acid
- Cas Number:
- 503-74-2
- Molecular formula:
- C5H10O2
- IUPAC Name:
- 3-methylbutanoic acid
- Details on test material:
- TS-Freetext:
3-Methylbutanoic acid [CAS No. 503-74-2], not further specified
Constituent 1
Results and discussion
Any other information on results incl. tables
RS-Freetext:
Henry´s Law Constant: 8.33 E-7 atm m3/mol (= 8.65 E-2 Pa m3/mol): This value indicates that isovaleric acid will volatilise slowly from water surfaces, but in addition, the pKa value indicates that the acid will exist predominantly in its ionic form and, therefore, not be able to volatilize (Lyman et al., 1990).
Applicant's summary and conclusion
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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