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公开(公告)号：US3565576A
公开(公告)日：1971-02-23
申请号：US3565576D
申请日：1969-12-22
Applicant: CENTRE NAT ETD SPATIALES
Inventor： PANNETIER GUY
IPC: C01G55/00
CPC classification number: C01G55/005 , C01G55/00
Abstract: A PROCESS FOR REMOVING SODIUM CHLORIDE CONTAINED IN COMMERCIAL HEXACHLOROPHIC ACID, WITH COMPRISES A HEAT TREATMENT OF THE IMPURE ACID WITH NITRIC ACID, A PRECIPITATION OF A COMPLEX HYDROXIDE OF TETRAVALENT IRIDIUM BY ADDING AMMONIUM HYDROXIDE IN THE PRESENCE OF HYDROGEN PEROXIDE AND A HEAT TREATMENT OF THE WASHED PRECIPITATE WITH HYDROCHLORIC ACID IN ORDER TO OBTAIN SUBSTANTIALLY PURE HEXACHLOROIRIDIC ACID.
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