Reaction products of diazotised 2-amino-5-nitrobenzenesulfonic acid coupled with resorcinol, subsequently coupled with diazotized 2-amino-4-nitro-6-sulfo-phenol, chelated with iron, sodium salt

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:

June 15, 2015

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Principles of method if other than guideline:

Study conducted according to internal method SOP- STR 028.

GLP compliance:

no

Type of method:

differential scanning calorimetry

Decomposition:

yes

Decomp. temp.:

> 251 - < 393 °C

Water/imbibition solvent release: 25 - 150°C

Endothermic effect between 251 and 393°C (onset 312.1°C, enthalpy 594.7 J/g).

Conclusions:

Decomposition between 251 and 393°C.

Executive summary:

Method:

The study has been conducted according to the OECD guideline 102, corresponding to the internal method SOP-STR 028 by means of a Differential Scanning Calorimetry.

Results:

A release of water/imbibition solvent between 25 and 150°C has been observed. The solvent release has been followed by decomposition between 251 and 393°C (onset 312.1°C, enthalpy: 594.7 J/g).

Description of key information

OECD TG 102 - the test substance does not melt. Decomposition between 251 and 393°C.