Sulphur and compounds

The System Phosphorus-Sulphur and Compounds.—The two elements mixed in various proportions were fused in sealed tubes at about 200° C. The solids so formed were heated and the temperatures determined at which complete liquefaction took place. These temperatures are the initial freezing-points of liquid at that temperature in equilibrium with the solid phases. 

Phosphorus and Sulphur —Historical—Physical Mixtures—The System Phosphorus-Sulphur and Compounds—Tetraphosphorus Trisulphide—Diphosphorus Trisulphide — Tetraphosphorus Heptasulphide — Phosphorus Pentasulphide—Uses of the Sulphides of Phosphorus—Oxysulphides—Thio-phosphites, Thiohypophosphates and Thiophosphates. 

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