Boron carbide

Auto flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

relative self-ignition temperature (solids)

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

other:

Reference 2

Endpoint:

auto-flammability

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

secondary literature

Qualifier:

according to guideline

Guideline:

other: VDI 2263

Deviations:

no

Principles of method if other than guideline:

The methods of the various determinations are in detail explained in the attached background material:

Determination of the minimum ignition energy
Determination of the ignition temperature
Determination of the maximum explosion (over)pressure pmax
Determination of the KSt value

GLP compliance:

not specified

Auto-ignition temperature:

> 600 °C

Remarks on result:

other:

Ignition Temperature BAM

no ignition up to 600 °C

Description of key information

Boron carbide does not noticeably react with oxygen below 1,000 °C, and therefore self-heating of the substance can be excluded up to 400 °C. In addition, a supporting study with boron carbide powder of particle size 1200mesh according to VDI 2263 show that boron carbide does not ignite up to 600 °C and is not flammable using an ignition source of 1,000°C.

Since preliminary results exclude self heating of the substance up to 400°C, the performance of a study to determine the self ignition temperature is not required and can be waived according to Column 2 of REACH Annex VII (standard information requirements for substances manufactured or imported in quantities of 1 tonne per year or more) of Regulation (EC) No 1907/2006.