Registration Dossier
Registration Dossier
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EC number: 267-956-0 | CAS number: 67953-76-8
pH
Administrative data
- Endpoint:
- pH
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
Data source
Reference
- Reference Type:
- other company data
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
- Principles of method if other than guideline:
- pH-measurements (10 g/l) taken in the laboratory for solutions of pure, crystalline HEDP with increasing stoichometric amounts of the corresponding base (NaOH).
- GLP compliance:
- not specified
Test material
- Reference substance name:
- Etidronic acid
- EC Number:
- 220-552-8
- EC Name:
- Etidronic acid
- Cas Number:
- 2809-21-4
- Molecular formula:
- C2H8O7P2
- IUPAC Name:
- (1-hydroxyethylidene)bisphosphonic acid
- Test material form:
- solid: crystalline
Constituent 1
Results and discussion
pH valueopen allclose all
- pH value:
- 2.5
- Concentration:
- 10 g/L
- Remarks on result:
- other: Stoichiometric loading of base equivalent to HEDP-1Na
- pH value:
- 4.6
- Concentration:
- 10 g/L
- Remarks on result:
- other: Stoichiometric loading of base equivalent to HEDP-2Na
- pH value:
- 10.4
- Concentration:
- 10 g/L
- Remarks on result:
- other: Stoichiometric loading of base equivalent to HEDP-3Na
- pH value:
- 11.7
- Concentration:
- 10 g/L
- Remarks on result:
- other: Stoichiometric loading of base equivalent to HEDP-4Na
Applicant's summary and conclusion
- Conclusions:
- pH values of 2.5, 4.6, 10.4 and 11.7 were determined for the substance using a relevant method.
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