Similarity Computation in Novelty Detection and Biomedical Text Categorization

Phosphorus pentasulfide is made. To this end gaseous nitrogen is introduced into the pipes feeding a reactor with a phosphorus melt and sulfur melt and/or into the outlet pipe for the phosphorus pentasulfide melt, the nitrogen being admitted under a pressure lower than the static pressure exerted in the pipes by the quantity of melt upstream of the gas inlets.