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Additional physico-chemical information

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Endpoint:
additional physico-chemical information
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Results obtained from scientifically accepted methods, but reporting of methodology was limited.
Principles of method if other than guideline:
Explosion indices were measured using two methods: modified Hartmann apparatus and a 20-Iiter-spherical combustion chamber.
GLP compliance:
not specified
Endpoint investigated:
other: dust cloud explosion

The substance was determined not to be negative in the modified Hartmann apparatus evaluation, with an estimated minimum ignition energy of >1J, and static electricity can be excluded as effective ignition source.

The substance was found to have an ignition energy of 10000 J and a pressure rise rate of 108 bar/s in the 20 -liter-apparatus evaluation and was deemed to be of Dust explosion Class 1.

Conclusions:
The substance (2.0 um particle size) was determined not to be explosive in the modified Hartmann apparatus evaluation, with an estimated minimum ignition energy of >1J. However, the substance was found to have an ignition energy of 10000 J and a pressure rise rate of 108 bar/s in the 20 -liter-apparatus evaluation and was deemed to be of Dust explosion Class 1.
Endpoint:
additional physico-chemical information
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Results obtained from scientifically accepted methods, but reporting of methodology was limited.
Reason / purpose:
reference to same study
Principles of method if other than guideline:
Explosion indices were measured using two methods: modified Hartmann apparatus and a 20-Iiter-spherical combustion chamber.
GLP compliance:
not specified
Endpoint investigated:
other: dust cloud explosion

The substance was determined not to be negative in the modified Hartmann apparatus evaluation, with an estimated minimum ignition energy of >1J, and static electricity can be excluded as effective ignition source.

The substance was found to have an ignition energy of 10000 J and a pressure rise rate of 98 bar/s in the 20 -liter-apparatus evaluation and was deemed to be of Dust explosion Class 1.

Conclusions:
The substance (0.9 um particle size) was determined not to be explosive in the modified Hartmann apparatus evaluation, with an estimated minimum ignition energy of >1J. However, the substance was found to have an ignition energy of 10000 J and a pressure rise rate of 98 bar/s in the 20 -liter-apparatus evaluation and was deemed to be of Dust explosion Class 1.

Description of key information

The substance (0.9 um particle size) was determined not to be explosive in the modified Hartmann apparatus evaluation, with an estimated minimum ignition energy of >1J. However, the substance was found to have an ignition energy of 10000 J and a pressure rise rate of 98 bar/s in the 20 -liter-apparatus evaluation and was deemed to be of Dust explosion Class 1.

The substance (2.0 um particle size) was determined not to be explosive in the modified Hartmann apparatus evaluation, with an estimated minimum ignition energy of >1J. However, the substance was found to have an ignition energy of 10000 J and a pressure rise rate of 108 bar/s in the 20 -liter-apparatus evaluation and was deemed to be of Dust explosion Class 1.

Additional information