MX9803559A - Manufacture of very low arsenic hydrogen fluoride. - Google Patents

Manufacture of very low arsenic hydrogen fluoride.

Info

Publication number
MX9803559A
MX9803559A MX9803559A MX9803559A MX9803559A MX 9803559 A MX9803559 A MX 9803559A MX 9803559 A MX9803559 A MX 9803559A MX 9803559 A MX9803559 A MX 9803559A MX 9803559 A MX9803559 A MX 9803559A
Authority
MX
Mexico
Prior art keywords
hydrogen fluoride
arsenic
manufacture
level
low arsenic
Prior art date
Application number
MX9803559A
Other languages
Spanish (es)
Other versions
MXPA98003559A (en
Inventor
Paul Frederick Kunkel
Charles Lewis Redmon
Somanahalli Naranappa Subbanna
Original Assignee
Allied Signal Inc
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.)
Filing date
Publication date
Application filed by Allied Signal Inc filed Critical Allied Signal Inc
Publication of MX9803559A publication Critical patent/MX9803559A/en
Publication of MXPA98003559A publication Critical patent/MXPA98003559A/en

Links

Classifications

    • 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
    • C01B7/195—Separation; Purification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

The invention provides a process for the preparation of hydrogen fluoride having a very low arsenic level. More specifically, the invention provides a process in which industrial grade anhydrous hydrogen fluoride, or an intermediate product obtained during the hydrogen fluoride manufacturing process, is contacted with an oxidizer in order to oxidize the arsenic impurity to produce anhydrous hydrogen fluoride with a level of arsenic impurity that is at least less than two parts per billion, or aqueous hydrogen fluoride with a correspondingly low level of arsenic.
MXPA/A/1998/003559A 1995-11-13 1998-05-06 Manufacture of hydrogen fluoride with very undertaken of arsen MXPA98003559A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US55565995A 1995-11-13 1995-11-13
US555659 1995-11-13

Publications (2)

Publication Number Publication Date
MX9803559A true MX9803559A (en) 1998-09-30
MXPA98003559A MXPA98003559A (en) 1998-11-16

Family

ID=

Also Published As

Publication number Publication date
AU7610796A (en) 1997-06-05
WO1997018158A1 (en) 1997-05-22
EP0879211A1 (en) 1998-11-25

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