Niobium

Additional physico-chemical information

Link to relevant study record(s)

Reference

Endpoint:

other: dust explosion

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

other: CIPAC MT 171

Version / remarks:

gravimetrical and optical method

GLP compliance:

yes (incl. QA statement)

Results (gravimetrical method)

The test was performed on one batch of FeNb Fines M45 in double determination.

Sample	Weight of filter [mg]	Weight of filter and dust [mg]	Weight of test item [g]	Dust [mg]	Mean Dust [mg]	% of the weighed sample	Interpretation
1	101.0	115.6	30.079	14.6	14.5	0.048	Essentially non dusty
2	99.6	113.9	30.011	14.3

 

 

Results (optical method)
The test was performed on one batch of FeNb Fines M45 in double determination.

Results from the determination of dustiness of FeNb Fines M45 with white light source.

Sample	Weight of test item [g]	Optical dust value	Interpretation
1	30.071	13.7	Essentially non dusty
2	30.057	14.5

 

Discussion and Conclusion:
The mean gravimetrical dust value was measured to be 14.5 mg and is therefore between 12-30 mg dust.
Using the optical method the optical dust value was between 10 and 25. Therefore, the test item appears as essentially non dusty using the gravimetrical method and the optical method.

Conclusions:

- non dusty
The mean gravimetrical dust value was measured to be 14.5 mg and is therefore between 12-30 mg dust. Using the optical method the optical dust value was between 10 and 25. Therefore, the test item appears as essentially non dusty using the gravimetrical method and the optical method.

Description of key information

- not dust explosive (Fines M45 (40 - 250 µm)