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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Explosiveness

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Reference
Endpoint:
explosiveness
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Justification for type of information:
data is from authoritative database
Qualifier:
equivalent or similar to guideline
Guideline:
other: as mentioned below
Principles of method if other than guideline:
To determine the explosive limits of the test chemical
GLP compliance:
not specified
Parameter:
other: More sensitive to shock than m-dinitrobenzene
Remarks:
migrated information
Remarks on result:
other: no data
Parameter:
other: More sensitive to friction than m-dinitrobenzene
Remarks:
migrated information
Remarks on result:
other: no data
Parameter:
other: Explosive under influence of flame
Remarks:
migrated information
Remarks on result:
other: no data
Parameter:
other: Explosive (not specified)
Remarks:
migrated information
Remarks on result:
other: no data

Lower explosion limit = 30 g/m³, Upper explosion limit = powder

Maximum explosion pressure = 9.1 bar (i.e 910000 Pa)

Interpretation of results:
non explosive
Conclusions:
The limits and conditons for causing an explosion due to exposure of calcium stearate in air are as follows:
Lower explosion limit = 30 g/m³, Upper explosion limit = powder and Maximum explosion pressure = 9.1 bar (i.e 910000 Pa).
Executive summary:

A study was conducted to determine the limits of explosion for calcium stearate. There is a risk of a dust explosion if the following conditions are met:

The substance is given in very finely distributed form (powder, dust), The substance is whirled up in sufficient quantity in the air. and finally an ignition source is present (flame, spark, electrostatic discharge, etc.)

The limits and conditons for causing an explosion due to exposure of calcium stearate in air are as follows:

Lower explosion limit = 30 g/m³, Upper explosion limit = powder and Maximum explosion pressure = 9.1 bar (i.e 910000 Pa).

Description of key information

A study was conducted to determine the limits of explosion for calcium stearate. There is a risk of a dust explosion if the following conditions are met:

The substance is given in very finely distributed form (powder, dust), The substance is whirled up in sufficient quantity in the air. and finally an ignition source is present (flame, spark, electrostatic discharge, etc.)

The limits and conditons for causing an explosion due to exposure of calcium stearate in air are as follows:

Lower explosion limit = 30 g/m³, Upper explosion limit = powder and Maximum explosion pressure = 9.1 bar (i.e 910000 Pa).

Key value for chemical safety assessment

Explosiveness:
non explosive

Additional information

A study was conducted to determine the limits of explosion for calcium stearate. There is a risk of a dust explosion if the following conditions are met:

The substance is given in very finely distributed form (powder, dust), The substance is whirled up in sufficient quantity in the air. and finally an ignition source is present (flame, spark, electrostatic discharge, etc.)

The limits and conditons for causing an explosion due to exposure of calcium stearate in air are as follows:

Lower explosion limit = 30 g/m³, Upper explosion limit = powder and Maximum explosion pressure = 9.1 bar (i.e 910000 Pa).

Justification for classification or non-classification

In accordance with column 2 of Annex VII of the REACH regulation, the study does not need to be conducted since there are no chemical groups associated with explosive properties present in the molecule of calcium stearate (CAS No. 1592-23-0).Thus, this end point was considered for waiver and the chemical is considered to be "Non explosive".