Registration Dossier
Registration Dossier
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EC number: 203-571-6 | CAS number: 108-31-6
Water solubility
Administrative data
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Guideline study (OECD TG 105) with GLP standard.
Data source
Reference
- Reference Type:
- publication
- Title:
- Unnamed
- Year:
- 2 005
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- GLP compliance:
- yes
- Type of method:
- other: not specified
Test material
- Reference substance name:
- Maleic anhydride
- EC Number:
- 203-571-6
- EC Name:
- Maleic anhydride
- Cas Number:
- 108-31-6
- Molecular formula:
- C4H2O3
- IUPAC Name:
- furan-2,5-dione
Constituent 1
Results and discussion
Water solubilityopen allclose all
- Water solubility:
- 407 000 mg/L
- Temp.:
- 20 °C
- pH:
- < 1
- Water solubility:
- 402 000 mg/L
- Temp.:
- 20
- pH:
- 4
- Water solubility:
- 407 000 mg/L
- Temp.:
- 20
- pH:
- 7
- Water solubility:
- 409 000 mg/L
- Temp.:
- 20
- pH:
- 9
Any other information on results incl. tables
Hydrolysis to maleic acid occurs in aqueous conditions, so test substance was likely a mixture of maleic anhydride, maleic acid and its salts.
Maleic acid was the analyte measured. Measured concentrations are the result of the mathematical conversion of the actual unrounded concentration of maleic acid to maleic anhydride equivalents. At test termination, pH measurements for all test solutions were <1, indicating that the buffer capacity of the test solution had been exceeded.
Applicant's summary and conclusion
- Conclusions:
- Interpretation of results (migrated information): very soluble (> 10000 mg/L)
Solubility is 407,000 mg/L at 20 ± 0.5 ºC.
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