Reaction mass of chromium (+ 3) hydroxide sulfate and sodium sulfate

Melting point / freezing point

Link to relevant study record(s)

Reference

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

04 AUG 2009 to 11 JAN 2010

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Melting / freezing pt.:

> 350 °C

Chromium (III) hydroxide sulphate exhibits no melting effects up to 350 °C. An endothernic effect was observed at about 60 °C. This was caused by the release of water during crystallization.

Conclusions:

Chromium (III) hydroxide sulphate exhibits no melting effects up to 350 °C.

Executive summary:

The melting point of the sample was assessed in a GLP-study according to EU Method A.1 via differential scanning calorimetry. The sample exhibits no melting effects up to 350 °C. Multiple endothernic effects were observed at about 60 °C. This was caused by the release of water during crystallization.

Description of key information

The melting point of the sample was assessed in a GLP-study according to EU Method A.1 via differential scanning calorimetry. The sample exhibits no melting effects up to 350 °C. Multiple endothermic effects were observed at about 60 °C. This was caused by the release of water during crystallization.