Tricobalt bis(orthophosphate)

Explosiveness

Administrative data

Endpoint:

explosive properties of explosives

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

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

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2022

Report date:

2022

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: VDI 2263

Principles of method if other than guideline:

An explosibility screening test was conducted based on Verein Deutscher Ingenieure (VDI) 2263, Part 1 (Section 2.1.1), “Dust fires and dust explosions; hazards, assessment, protective measures”, using a 1.2-L Modified Hartmann-Apparatus with a 10 J AC electric arc. A positive result is evidenced by visible flames in the apparatus. If a negative result is obtained with the Modified Hartmann, a confirmatory test is conducted in the 20-L chamber using ASTM E1226, “Standard Test Method for Explosibility of Dust Clouds” (Section 13). The criterion used for an “explosion” in the 20-L chamber is a 1-bar overpressure after accounting for the influence of the 5-kJ ignition source. These screening tests are used to identify if the sample is combustible in a dust cloud form.
Also, a combustibility screening test, based on VDI 2263, “Dust fires and dust explosions; hazards, assessment, protective measures”, was conducted. This test is designed to determine the ignitability and the combustibility/burning behavior of a dried solid product in a pile (i.e. not suspended in a cloud; but dust deposited on a flat surface) when it is subjected to a 1000°C torch flame for approximately 5 seconds (20 seconds for metals).

GLP compliance:

not specified

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

Results of test series for explosives

Results of test series for explosives 1

Test series:

other: Explosibility screening test

Method:

other: based on Verein Deutscher Ingenieure (VDI) 2263, Part 1 (Section 2.1.1), “Dust fires and dust explosions; hazards, assessment, protective measures'

Parameter:

other: 1.2-L Hartmann

Result:

negative, no explosion

Remarks on result:

no ignition, explosion, self-heating or visible decomposition

Results of test series for explosives 2

Key result

Test series:

other: Explosivity screening test

Method:

other: based on Verein Deutscher Ingenieure (VDI) 2263, Part 1 (Section 2.1.1), “Dust fires and dust explosions; hazards, assessment, protective measures'

Parameter:

other: 20-L chamber using ASTM E1126

Result:

negative, no explosion

Remarks on result:

no ignition, explosion, self-heating or visible decomposition

Results of test series for explosives 3

Key result

Test series:

other: Combustibility screening test

Method:

other: based on Verein Deutscher Ingenieure (VDI) 2263, Part 1 (Section 2.1.1), “Dust fires and dust explosions; hazards, assessment, protective measures'

Parameter:

other: Combustion cllassification

Value:

1

Result:

result is considered "-" (negative)

Remarks:

No ignition: CL-1

Remarks on result:

no ignition, explosion, self-heating or visible decomposition

Any other information on results incl. tables

Screening Test Results for Dust Cloud Explosion Hazards:

Moisture content: 0.5%w/w

Mean particle size: 5 µm - 100% < 75 µm - 100% < 500 µm

1.2 -L Hartman		20 -L Chamber
Volume (ml)	Explosible (Yes/No)	Dust Concentration Tested (g/m3)	Explosion overpressure (bar)	Explosible (Yes/No)
5	No	500	0.0	No
5	No	1000	0.0	No
5	No	2000	0.0	No
-	No	3000	0.0	No

Combustibility Screening Test Results for Dust Layers:

Time to ignition (sec)	Combustion Classification	Observations
n/a	CL-1	No ignition

Applicant's summary and conclusion

Interpretation of results:

GHS criteria not met

Conclusions:

Under the conditions of the explosibility screening test conducted based on Verein Deutscher Ingenieure (VDI) 2263, the test item is considered to be non-explosible in dust cloud form.
The results from the combustibility screening test based on VDI 2263 demonstrated that the test item did not ignite when in contact with the ignition source.