Reaction mass of Cobaltate(2-), [2-[[[4-hydroxy-3-[[2-oxo-1-[(phenylamino)carbonyl]propyl]azo]phenyl]sulfonyl]amino]benzoato(3-)][2-[[2-hydroxy-5-[(phenylamino)sulfonyl]phenyl]azo]-3-oxo-N-phenylbutanamidato(2-)]-, disodium and Cobaltate(3-), bis[2-[[[4-hydroxy-3-[[2-oxo-1-[(phenylamino)carbonyl]propyl]azo]phenyl]sulfonyl]amino]benzoato(3-)]-, trisodium and sodium bis[2-[[2-hydroxy-5-[(phenylamino)sulphonyl]phenyl]azo]-3-oxo-N-phenylbutyramidato(2-)]cobaltate(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:

January from the 16th to the 29th, 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

test procedure in accordance with generally accepted scientific standards and described in sufficient detail

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Version / remarks:

1995

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Remarks:

and capillary method

Decomposition:

yes

Decomp. temp.:

260 °C

In the temperature range from 40 to 220 °C a broad endothermic effect was observed, which shows no typical melting or boiling signal. An exothermic effect was observed starting from 260 °C with an averaged energy release of -190 J/g.

Sample weight / mg	Start of Effect / °C	Energy / (J/g)	Weight loss / mg	Atmospheric pressure / hPa
5.41	40	+140 (endo)	2.50	982.3
	260	-100 (exo)
5.4	40	+250 (endo)	2.49	987.5
	260	-90 (exo)

For verification of the results the test item was additionally tested according to the capillary method. There, no melting and no boiling of the test item were observed up to a temperature of 400 °C. Hence, the endothermic effects found in the DSC measurements cannot be assigned to melting or boiling of the test item.

In summary, the test item has no melting point and no boiling point up to a temperature of 500 °C.

Conclusions:

No melting/boiling point up to 500 °C

Executive summary:

The thermal behaviour of test item was assessed using the DSC analysis, according to the OECD guideline 102. To verify the results of the DSC measurement, three additional measurements with the capillary method were performed from 25 to 400 °C at a heating rate of 3 K/min.

In the temperature range from 40 to 220 °C a broad endothermic effect was observed, which shows no typical melting or boiling signal. An exothermic effect was observed starting from 260 °C with an averaged energy release of -190 J/g. For verification of the results the test item was additionally tested according to the capillary method. There, no melting and no boiling of the test item were observed up to a temperature of 400 °C. Hence, the endothermic effects found in the DSC measurements cannot be assigned to melting or boiling of the test item.

In summary, the test item has no melting point and no boiling point up to a temperature of 500 °C.

Conclusion

No melting/boiling point up to 500 °C

Description of key information

No melting/boiling point up to 500 °C

Additional information

OECD 102 - DSC analysis and capillary method