Registration Dossier
Registration Dossier
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EC number: 232-089-9 | CAS number: 7785-87-7
Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study conducted according to current accepted guidelines.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
- Report date:
- 2009
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- thermal analysis
Test material
- Reference substance name:
- Manganese sulphate monohydrate
- IUPAC Name:
- Manganese sulphate monohydrate
- Details on test material:
- - Name of test material (as cited in study report): Manganese sulfate (note that the batch number is the same as used in the GLP water solubility study, which stated the substance name as manganese sulphate monohydrate, with a CoA in that report confirming this)
- Substance type: Pink crystalline solid
- Physical state: Solid
- Lot/batch No.: 08729
- Storage condition of test material: Room temperature in the dark.
Constituent 1
Results and discussion
Melting / freezing point
- Melting / freezing pt.:
- > 723 K
- Remarks on result:
- other: ± 0.5
Any other information on results incl. tables
As there were no significant thermal events, it was determined that no changes in the physical state of the test material occurred over the range of 25 to 450 °C.
During both determinations, an endotherm was displayed by both Thermograms. These are tabulated in table 3 (see below).
Table 3: Thermographic Data from Determinations 1 and 2
Determination |
Thermal Event |
Interpretation |
Temperature |
|
°C |
K |
|||
1 (Air, Static) |
Endotherm |
Loss of water (water of crystallisation) |
~280 |
~553 |
2 (Nitrogen) |
Endotherm |
Loss of water (water of crystallisation) |
~280 |
~553 |
Applicant's summary and conclusion
- Conclusions:
- The melting temperature of manganese sulphate was determined to be > 723 ± 0.5 K. The endotherms observed in both thermograms were attributable to the loss of water from the monohydrate. The final mpt will be for the anhydrous substance, as registered.
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