Registration Dossier
Registration Dossier
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EC number: 215-208-9 | CAS number: 1313-59-3
Hydrolysis
Administrative data
- Endpoint:
- hydrolysis
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Operating and technical experience of the producer
Data source
Reference
- Reference Type:
- other company data
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guideline
- Qualifier:
- no guideline required
- Principles of method if other than guideline:
- Daily manipulation of the substance by the producer
- GLP compliance:
- no
- Remarks:
- Routine tests in the laboratory
Test material
- Reference substance name:
- Disodium oxide
- EC Number:
- 215-208-9
- EC Name:
- Disodium oxide
- Cas Number:
- 1313-59-3
- Molecular formula:
- Na2O
- IUPAC Name:
- Disodium oxide
- Reference substance name:
- Disodium peroxide
- EC Number:
- 215-209-4
- EC Name:
- Disodium peroxide
- Cas Number:
- 1313-60-6
- Molecular formula:
- Na2O2
- IUPAC Name:
- disodium peroxide
- Details on test material:
- Impurity : disodium peroxide (EC 215-209-4, CAS 1313-60-6) < 15% m/m
Constituent 1
impurity 1
- Specific details on test material used for the study:
- Source/ batch : quality control once a week.
- Radiolabelling:
- no
Study design
- Analytical monitoring:
- no
- Details on sampling:
- Not applicable
- Buffers:
- Not applicable
- Details on test conditions:
- When manipulate in laboratory and exposed to humidity of air, Na2O decomposes instantenaously producing change in pH (>12).
Duration of test
- Duration:
- 1 h
- pH:
- 12
- Temp.:
- 25 °C
- Remarks:
- Decomposition instantenaously
- Number of replicates:
- Not applicable
- Positive controls:
- no
- Negative controls:
- no
- Statistical methods:
- Not applicable
Results and discussion
- Preliminary study:
- No pertinent
- Test performance:
- No pertinent
- Transformation products:
- yes
Identity of transformation products
- No.:
- #1
Reference
- Reference substance name:
- Unnamed
- IUPAC name:
- sodium hydroxide
- Inventory number:
- InventoryMultipleMappingImpl [inventoryEntryValue=EC 215-185-5]
- CAS number:
- 1310-73-2
- Molecular formula:
- HNaO
- Details on hydrolysis and appearance of transformation product(s):
- pH modification
Dissipation DT50 of parent compound
- pH:
- 7
- Temp.:
- 20 °C
- DT50:
- < 1 h
- Type:
- not specified
- Other kinetic parameters:
- No
- Details on results:
- No details
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not applicable
- Conclusions:
- When exposed to humidity, Na2O instantaneously decomposes in NaOH, following the equation: Na2O + H2O -> 2NaOH
This reaction is verified weekly in a laboratory by pH measures
Testing for hydrolysis is then technically impossible and scientifically unjustified: instantaneous decomposition of Na2O in presence of humidity of air do not allow hydrolysis testing.
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