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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

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: Conducted according to current accepted guidelines.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2009
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

Constituent 1
Chemical structure
Reference substance name:
Manganese dichloride
EC Number:
231-869-6
EC Name:
Manganese dichloride
Cas Number:
7773-01-5
Molecular formula:
Cl2Mn
IUPAC Name:
manganese(2+) dichloride
Details on test material:
- Name of test material (as cited in study report): Manganese (II) chloride
- Molecular formula (if other than submission substance): MnCl2
- Molecular weight (if other than submission substance): Not reported
- Substance type: Light pink solid flakes
- Physical state: Solid
- Analytical purity: Not reported
- Impurities (identity and concentrations): Not reported
- Composition of test material, percentage of components: Not reported
- Purity test date: Not reported
- Lot/batch No.: 104896-05
- Expiration date of the lot/batch: Not reported
- Stability under test conditions: Not reported
- Storage condition of test material: Room temperature in the dark.

Results and discussion

Melting / freezing point
Melting / freezing pt.:
> 723 K
Remarks on result:
other: ± 0.5

Any other information on results incl. tables

To confirm that the endotherm observed in the first heating cycle was due to water of crystallisation, the test material was heated and cooled then reheated. The second heating cycle showed that no endotherm was present, therefore it could be concluded that the endotherm observed in the first cycle was due to water of crystallisation and not due to melting of the test material. There were no changes in the appearance of the test material before and after heating, which indicated that melting did not occur.

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

Endotherm

Loss of water (water of crystallisation)

~240

~513

2

Endotherm

Loss of water (water of crystallisation)

~240

~513

Applicant's summary and conclusion

Conclusions:
The melting temperature of manganese dichloride was determined to be > 720 ± 0.5 K. The endotherms observed in both thermograms were attributable to the loss of water.