Registration Dossier
Registration Dossier
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EC number: 267-956-0 | CAS number: 67953-76-8
Additional physico-chemical information
Administrative data
- Endpoint:
- other: Stability constants
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
Data source
Referenceopen allclose all
- Reference Type:
- publication
- Title:
- Environmental properties and safety assessment of organic phosphonates used for detergent and water treatment applications
- Author:
- Gledhill, W.E. and Feijtel, T.C.J.
- Year:
- 1 992
- Bibliographic source:
- The Handbook of Environmental Chemistry, Vol. 3, Part F, (Ed.: Hutzinger, O.), Springer-Verlag, Berlin.
- Reference Type:
- publication
- Title:
- Stability constants - Supplement
- Author:
- Martell AG and Sillen LG
- Year:
- 1 968
- Bibliographic source:
- No.1 Special Publication 25. The London Chemical Society, Alden Press, London
Materials and methods
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:
- not specified
Constituent 1
Results and discussion
- Results:
- Memo: A wide range of stability constants for the association of the substance with metal ions is available. These all show high values, suggesting that in the environment the substance will be associated with ions such as calcium and magnesium.
Any other information on results incl. tables
In order of complexation strength, values of the log10 of
the stability constants of representative metals with HEDP are:
Cu 18.7
Co 17.3
Hg 16.9
Zn 16.7
Cd 15.8
Ni 15.8
Ca 6.8
Mg 6.2
Applicant's summary and conclusion
- Conclusions:
- The stability constants of HEDP with metals have been reported.
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