Sodium [3-hydroxy-4-[(1-hydroxy-8-sulpho-2-naphthyl)azo]naphthalene-1-sulphonato(4-)]chromate(1-)

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:

February 13, 2014

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Deviations:

not specified

GLP compliance:

no

Type of method:

thermal analysis

Remarks:

Differential Scanning Calorimetry

Decomposition:

yes

Decomp. temp.:

> 320 °C

Sublimation:

no

Between 119 - 163 °C, there is a negative peak associated to the release of water/ solvent, followed by a degradation that begins at 320 °C.

Conclusions:

The test substance decomposes before melting at temperature above 320 °C.

Executive summary:

Method

The test was performed according to internationally accepted testing procedures, using the Differential Scanning Calorimetry method for the analysis.

Result

Between 119 - 163 °C, there is a negative peak associated to the release of water/ solvent, followed by a degradation that begins at 320 °C.

Description of key information

The substance decomposes before melting/boiling, starting from 320 °C 

Additional information

The Melting Point analysis was performed according to internationally accepted testing procedures, using the Differential Scanning Calorimetry (DSC) method for the analysis. Between 119 - 163 °C, there is a negative peak associated to the release of water/ solvent, followed by a degradation that begins at 320 °C.