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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Melting point / freezing point

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
other: data from handbook
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: peer-reviewed handbook
Qualifier:
according to guideline
Guideline:
other: not specified
Principles of method if other than guideline:
The information does not come from a test report and the minimum fields can not be filled in.
GLP compliance:
not specified
Type of method:
other: data from handbook
Key result
Melting / freezing pt.:
250 °C
Atm. press.:
101.3 kPa
Decomposition:
yes
Decomp. temp.:
250 °C
Sublimation:
no
Conclusions:
melting point: 250 °C (decomposes)
Executive summary:

According to the CRC Handbook of Chemistry and Physics (D.R. Lide) Magnesium perchlorate decomposes at 250 °C.

No further details are reported in the handbooks on the determination. The reported value is assumed to have been determined at STP (20°C, 101.3 kPa).

Description of key information

Decomposes at 250 °C (no details are reported in the handbook on the determination, the reported value is assumed to have been determined at 20°C and 101.3 kPa)

Key value for chemical safety assessment

Additional information

The melting point of different perchlorates is stated in the CRC Handbook of Chemistry and Physics (D.R. Lide, 2010). Magnesium perchlorate (CAS 10034 -81 -8) decomposes at 250 °C. This result is supported by the data of Sodium perchlorate (CAS 7601 -89 -0), which decomposes at 482 °C, and Ammonium perchlorate (7790 -98 -9), which decomposes and explodes before melting, wherfore no temperature could be determined at all. These data confirm that perchlorate decompose before melting and a true melting point can not be determined.