Registration Dossier
Registration Dossier
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EC number: 218-191-6 | CAS number: 2068-80-6
Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- - Principle of test:
Although the principle is described in another publication of Apelblat, the shortened description og the present publication indicates that the principle is similar to the flask method.
- Parameters analysed / observed: The solubility of organic salts of magnesium were measured at different temperatures (283K to 333K). - GLP compliance:
- no
- Type of method:
- other: similar to flask method
- Key result
- Water solubility:
- 0.138 other: mol/kg
- Temp.:
- 23.5 °C
- Remarks on result:
- other: pH not reported
- Remarks:
- corresponding to 21.36 g/L
- Conclusions:
- According to published data from Apelblat (1993) the water solubility of magnesium-DL-aspartate-tetrahydrate is 0.1375 mol/L corresponding to 21.36 g/L at 23.5°C.
- Executive summary:
According to published data from Apelblat (1993) the water solubility of magnesium-DL-aspartate-tetrahydrate is 0.1375 mol/L corresponding to 21.36 g/L at 23.5°C.
Reference
Description of key information
According to the publication of Apelbat et al. (1993) the water solubility of the substance is 21.36 g/L at 23.5 °C.
Key value for chemical safety assessment
- Water solubility:
- 21.36 g/L
- at the temperature of:
- 23.5 °C
Additional information
No guideline compliant study report is available for the Magnesium-L-hydrogenaspartate-2 -hydrate, however, in the study conducted bxy Apelblat (1993) the solubilities and its denpendence of temperature of different organic salts of magnesium was investigated. The substance magnesium DL-aspartatc tetrahydrate, , C8H20N2Mg x 4H2O > 98.0 mass per cent was used .
The compositions of solid phases in equilibrium with the saturated solutions were not determined, but in the studied temperature range, the solid hydrates remain each with the same number of water molecules. The solubility at 23.5°C corresponding to 296.60 K was 0.01375 mol/kg corresponding to 21.36 g/L.
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