Process for the purification of phosphorus pentasulphide by dist

Distillation: processes – separatory – Vaporization zone under positive pressure or vacuum

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423303, B01D 310

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active

043747060

ABSTRACT:
Process for the purification of phosphorus pentasulphide by means of distillation under vacuum at a residual pressure of about 6 mmHg and carried out according to a "thermal profile" comprising, immediately before and immediately after the liquid-vapor-liquid double passage of state, two stationary stages wherein said pentasulphide is maintained in the liquid state at a temperature very close to the boiling temperature of the pentasulphide itself.

REFERENCES:
patent: 3183062 (1965-05-01), Taylor
patent: 3205041 (1965-09-01), Cremer et al.
patent: 3524725 (1970-08-01), Cremer et al.
patent: 3800028 (1974-03-01), Robota et al.

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