Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
from 2008-06-03 to 2008-07-02
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
not specified
GLP compliance:
yes
Type of method:
differential scanning calorimetry
Melting / freezing pt.:
> 590 °C
Decomposition:
no
Sublimation:
no
Conclusions:
Potassium sulfite has no melting point between 20°C and 590 °C.
One small endothermic peak at about 420 °C (onset) possibly indicates the melting of secondary components.
Executive summary:

The melting point of Potassium sulfite was determined by Differential Scanning Calorimetry in accordance with the OECD guideline 102.

No melting temperature was found between 20 °C and 590 °C.

Description of key information

The melting point of the test substance, Potassium sulfite, is greater than 590 °C.

Key value for chemical safety assessment

Additional information

One unpublished study report from BASF is available. The melting point of Potassium sulfite was determined by Differential Scanning Calorimetry in accordance with the OECD guideline 102.

No melting temperature was found between 20 °C and 590 °C. The melting point of the test substance, Potassium sulfite, is greater than 590 °C.