Registration Dossier
Registration Dossier
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EC number: 811-684-2 | CAS number: 1255735-07-9
Hydrolysis
Administrative data
- Endpoint:
- hydrolysis
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 016
- Report date:
- 2016
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 111 (Hydrolysis as a Function of pH)
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- 3-(difluoromethyl)-5-fluoro-1-methyl-1H-pyrazole-4-carbonyl fluoride
- EC Number:
- 811-684-2
- Cas Number:
- 1255735-07-9
- Molecular formula:
- C6 H4 F4 N2 O
- IUPAC Name:
- 3-(difluoromethyl)-5-fluoro-1-methyl-1H-pyrazole-4-carbonyl fluoride
Constituent 1
- Radiolabelling:
- no
Study design
- Analytical monitoring:
- yes
Results and discussion
- Transformation products:
- yes
Identity of transformation productsopen allclose all
- No.:
- #1
Reference
- Reference substance name:
- Unnamed
- IUPAC name:
- 3-(DifluoroMethyl)-5-fluoro-1-Methyl-1H-Pyrazole-4-carboxylic acid
- CAS number:
- 1255735-09-1
- Molecular formula:
- C6H5F3N2O2
- Molecular weight:
- 194.11
- SMILES notation:
- FC(F)c1nn(C)c(F)c1C(=O)O
- InChl:
- InChI=1S/C6H5F3N2O2/c1-11-5(9)2(6(12)13)3(10-11)4(7)8/h4H,1H3,(H,12,13)
- No.:
- #2
Reference
- Reference substance name:
- Unnamed
- IUPAC name:
- fluoride
- Inventory number:
- InventoryMultipleMappingImpl [inventoryEntryValue=EC 231-634-8]
- CAS number:
- 7664-39-3
- Identity:
- Hydrofluoric acid
- Molecular formula:
- FH
- Molecular weight:
- 18.999
- SMILES notation:
- [F-]
- InChl:
- InChI=1/FH/h1H/p-1
Total recovery of test substance (in %)open allclose all
- % Recovery:
- >= 2.59 - <= 2.65
- pH:
- 4
- Temp.:
- 25 °C
- Duration:
- 14.135 min
- % Recovery:
- >= 1.09 - <= 1.26
- pH:
- 7
- Temp.:
- 25 °C
- Duration:
- 6.235 min
- % Recovery:
- 0
- pH:
- 9
- Temp.:
- 25 °C
- Duration:
- 2.301 min
Dissipation DT50 of parent compoundopen allclose all
- pH:
- 4
- Temp.:
- 25 °C
- Hydrolysis rate constant:
- 0.26 min-1
- DT50:
- 2.71 min
- Type:
- (pseudo-)first order (= half-life)
- pH:
- 7
- Temp.:
- 25 °C
- Hydrolysis rate constant:
- 0.68 min-1
- DT50:
- 1.02 min
- Type:
- (pseudo-)first order (= half-life)
- pH:
- 9
- Temp.:
- 25 °C
- DT50:
- < 0.4 min
- Type:
- (pseudo-)first order (= half-life)
Applicant's summary and conclusion
- Conclusions:
- At 25 °C the test item was highly instable at pH 4, 7, and 9. The measured half-life times at 25 °C ranged from < 0.4 to 2.7 min, depending on pH. Therefore, determinations of the water solubilities are not possible under any of the given pH values.
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