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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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


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Administrative data

Link to relevant study record(s)

Description of key information

Reliable handbook data and the results of a proprietary study are available.

Key value for chemical safety assessment

Additional information

The results of a proprietary study indicate that phosphorus pentasuphide dust may explode in the presence of a source of ignition.

Ullmann also notes that there is a danger of dust explosions, particularly when grinding or on filling or discharging the substance. Dust-air mixtures containing >3% oxygen and >50 g/m3P4S10(particle size <0.07 mm) are explosive. An additonal study confirms the limiting oxygen concentration for flame propagation to be 5% (Italmatch).

Justification for classification or non-classification