Tricobalt bis(orthophosphate)

Melting point / freezing point

Administrative data

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

October 2021

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

comparable to guideline study with acceptable restrictions

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2021

Materials and methods

Test guideline

Test guideline 1

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Deviations:

yes

Remarks:

only one measurement was performed; no reference material was subjected to the same controlled temperature programme

Test guideline 2

Qualifier:

equivalent or similar to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Deviations:

yes

Remarks:

only one measurement was performed; no reference material was subjected to the same controlled temperature programme

Principles of method if other than guideline:

The test was carried out with a thermal analysis TA Instruments Q600 equipment.

GLP compliance:

no

Type of method:

thermal analysis

Test material

Test material information

Constituent 1

Reference substance name:

Tricobalt bis(orthophosphate)

EC Number:

236-655-6

EC Name:

Tricobalt bis(orthophosphate)

Cas Number:

13455-36-2

Molecular formula:

Co3(PO4)2

IUPAC Name:

tricobalt bis(orthophosphate)

impurity 1

Reference substance name:

Dicobalt diphosphate

EC Number:

238-689-7

EC Name:

Dicobalt diphosphate

Cas Number:

14640-56-3

Molecular formula:

Co2P2O7

IUPAC Name:

dicobalt diphosphate

impurity 2

Reference substance name:

cobalt phosphate octahydrate

Cas Number:

10294-50-5

Molecular formula:

Co3(PO4)2.8H2O

IUPAC Name:

cobalt phosphate octahydrate

Test material form:

solid: particulate/powder

Results and discussion

Melting / freezing point

Key result

Melting / freezing pt.:

>= 800 °C

Sublimation:

no

Remarks on result:

other: no significant thermal effects up to 800°C.

Any other information on results incl. tables

The test item shows an endothermic weight loss early on, about 140°C or so, then gradual minor weight loss thereafter. The minor weight loss above 200°C is less than 0.2 -0.4%. The analysis shows that the test item is stable up to 800°C.

Applicant's summary and conclusion

Conclusions:

The test item has no melting point up to 800 °C. No significant thermal effects from room temperature to 800 °C were determined in a differential thermal analysis.