LIQUID SULFUR TRIOXIDE FOR USE

Brand Owner Address Description
SULFAN GENERAL CHEMICAL COMPANY NEW YORK, N.Y. LIQUID SULFUR TRIOXIDE FOR USE AS A SOURCE OF HIGH STRENGTH SO3 IN THE INDUSTRIAL ARTS, AS, FOR EXAMPLE, IN THE FORTIFICATION OF OLEUM, IN SULFONATION PROCESSES, AND IN THE FORMATION OF CHEMICAL COMPOUNDS;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. A process for the recovery of arsenic trioxide from acid solutions, particularly the aqueous acid effluent produced by a gas-washing process in the pyrometallurgy of copper sulfide ores is provided. Generally, the process comprises concentrating the acid solution in one or more evaporators in series; crystallizing arsenic contained in the concentrated solution as arsenic trioxide crystals; filtering the crystallized solution to obtain a solid phase comprising impure arsenic trioxide crystals; and purifying the solid phase to obtain a purified crystal product comprising arsenic trioxide. The process produces a commercially salable arsenic trioxide product without producing any solid or liquid residues subject to special handling or treatment regulations.