Registration Dossier
Registration Dossier
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EC number: 616-639-9 | CAS number: 78620-07-2
Water solubility
Administrative data
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: conducted to OECD/EC guidelines with GLP
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 008
- Report date:
- 2008
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- flask method
Test material
- Details on test material:
- - Name of test material (as cited in study report): Hydroxyphosponoaceic acid, trisodium salt (TK13061/2)
- Physical state: Solid (white powder)
- Lot/batch No.: LIC 613/04
- Storage condition of test material: Room temperature in the dark
Constituent 1
Results and discussion
Water solubility
- Water solubility:
- 444 g/L
- Temp.:
- 20 °C
- pH:
- 9.3
Any other information on results incl. tables
The concentration (g/L) of Trisodium [carboxy(oxido)methyl]phosphonate in the sample solution is shown in the following table:
| Sample Number | Time Shaken at ~ 30C (hours) | Time Equilibrated at 20 C (hours) | Concentration (g/L) | Solution pH |
| 1* | 24 | 24 | 305.4 | 9.3 |
| 2 | 48 | 24 | 438.9 | 9.3 |
| 3 | 72 | 24 | 448.7 | 9.3 |
*considered to have not reached saturation equilibrium and therefore not used in the calculation of the mean water solubility.
Applicant's summary and conclusion
- Conclusions:
- Interpretation of results (migrated information): very soluble (> 10000 mg/L)
The water solubility of the Trisodium [carboxy(oxido)methyl]phosphonate has been determined to be 444 g/L of solution at 20.0 +/- 0.5 C.
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