Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of NL249965ApublicationCriticalpatent/NL249965A/xx
C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
C01B33/00—Silicon; Compounds thereof
C01B33/08—Compounds containing halogen
C—CHEMISTRY; METALLURGY
C01—INORGANIC CHEMISTRY
C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
C01B7/00—Halogens; Halogen acids
C01B7/19—Fluorine; Hydrogen fluoride
C01B7/191—Hydrogen fluoride
C01B7/193—Preparation from silicon tetrafluoride, fluosilicic acid or fluosilicates
C—CHEMISTRY; METALLURGY
C05—FERTILISERS; MANUFACTURE THEREOF
C05B—PHOSPHATIC FERTILISERS
C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
