Neodecanoic acid, cobalt 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:

2010-11-15 to 2010-11-16

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:

no

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Deviations:

no

GLP compliance:

no

Type of method:

differential scanning calorimetry

Atm. press.:

>= 1 003 - <= 1 009 hPa

Decomposition:

yes

Decomp. temp.:

>= 420 - <= 450 °C

Remarks on result:

other: Based on DSC-measurement, performed under nitrogen. No distinctive melting point has been observed up to the endothermic effect (420 - 450 °C). It is assumed that the test item decomposes while melting.

Thermal Stability

The DSC-measurement in a closed glass crucible (measured at 1009 hPa) with the test item showed one endothermic effect in the temperature range of 435 °C to 450 °C.

Melting Point / Melting Range (DSC)

Both DSC-measurements in open glass crucible (first: measured at 1009 hPa, measuring range 25 to 500 °C; second: measured at 1003 hPa, measuring range -50 to 500 °C) with the test item showed an endothermic effect in the temperature range 420 °C to 450 °C. After the measurements the test item was a blue liquid. The mass loss after the measurements was in the range of 95 to nearly 100 %. Due to the high mass loss it can be assumed that the endothermic effect was caused by boiling of the test item.

It is assumed that the test item decomposes while melting and that the decomposition products start boiling at approx. 427 °C.

Conclusions:

Neodecanoic acid, cobalt salt has no distinctive melting point up to the endothermic effect (420 - 450 °C). It is assumed that the test item decomposes while melting.

Description of key information

No melting point can be stated. Neodecanoic acid, cobalt salt has no distinctive melting point up to the endothermic effect (420 - 450 °C). It is assumed that the test item decomposes while melting.

Additional information

The melting point of the test substance was determined according to OECD guideline 102 with the differential scanning calorimetry method (DSC). The test item was heated up from ambient and -50 °C, respectively, to the final temperature (500 °C) at a constant heating rate (10 K/min) in a defined atmosphere (nitrogen). The quantity of heat absorbed or released was measured and recorded. Open glass crucibles were used as containers for the test item and as empty reference crucible since the test item reacts with aluminium standard crucible (pre-testing). The results from the DSC-measurements in open glass crucible showed that neodecanoic acid, cobalt salt decomposes while melting.