Registration Dossier
Registration Dossier
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EC number: 918-594-3 | CAS number: 7723-14-0
Explosiveness
Administrative data
Link to relevant study record(s)
Description of key information
Loose heaped powder is not explosive but might get subject to dust explosions by being dispersed in mixture with air.
Key value for chemical safety assessment
- Explosiveness:
- non explosive
Additional information
Loose heaped red phosphorus powder itself is not explosive even so it can be ignited by very small ignition energies and burns with a fast deflagration (see CSR Chapter 6.2.).
But dust clouds of red phosphorus powder in air are highly explosive with a high maximum rate of pressure rise and a very small minimum ignition energy (see CSR chapter 6.4) leading to the highest classification of the dust explosion class (3).
Justification for classification or non-classification
Red phosphorus in form of pure loose heaped powder is classified as non explosive, because even so it can be ignited by very small energies it just burns with a burning rate typical for a highly flammable substance without any explosion.
This behaviour changes in contact with oxidising substances. Such mixtures might already explode by applying small energies. This behaviour is well known because such mixtures are used in the ammunition industry.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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