MA20128A1 - Procede de defluoration de solutions de phosphates alcalins. - Google Patents

Procede de defluoration de solutions de phosphates alcalins.

Info

Publication number
MA20128A1
MA20128A1 MA20352A MA20352A MA20128A1 MA 20128 A1 MA20128 A1 MA 20128A1 MA 20352 A MA20352 A MA 20352A MA 20352 A MA20352 A MA 20352A MA 20128 A1 MA20128 A1 MA 20128A1
Authority
MA
Morocco
Prior art keywords
defluorination
alkaline phosphate
phosphate solutions
solutions
alkaline
Prior art date
Application number
MA20352A
Other languages
English (en)
Original Assignee
Hoechst Ag
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 Hoechst Ag filed Critical Hoechst Ag
Publication of MA20128A1 publication Critical patent/MA20128A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/26—Phosphates
    • C01B25/30—Alkali metal phosphates
    • C01B25/308—Methods for converting an alkali metal orthophosphate into another one; Purification; Decolorasing; Dehydrating; Drying

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Removal Of Specific Substances (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
MA20352A 1983-06-23 1984-05-29 Procede de defluoration de solutions de phosphates alcalins. MA20128A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833322503 DE3322503A1 (de) 1983-06-23 1983-06-23 Verfahren zur entfluorierung von alkaliphosphatloesungen

Publications (1)

Publication Number Publication Date
MA20128A1 true MA20128A1 (fr) 1984-12-31

Family

ID=6202106

Family Applications (1)

Application Number Title Priority Date Filing Date
MA20352A MA20128A1 (fr) 1983-06-23 1984-05-29 Procede de defluoration de solutions de phosphates alcalins.

Country Status (13)

Country Link
US (1) US4620966A (fr)
EP (1) EP0129784B1 (fr)
JP (1) JPS6011213A (fr)
BR (1) BR8403015A (fr)
CA (1) CA1217025A (fr)
DE (2) DE3322503A1 (fr)
ES (1) ES532832A0 (fr)
IL (1) IL72182A (fr)
MA (1) MA20128A1 (fr)
MX (1) MX161627A (fr)
PH (1) PH21066A (fr)
TR (1) TR22223A (fr)
ZA (1) ZA844737B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4011716A1 (de) * 1990-04-11 1991-10-17 Hoechst Ag Verfahren zur herstellung von alkaliphosphatloesungen

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA573592A (fr) * 1959-04-07 International Minerals And Chemical Corporation Methode de preparation de matiere de phosphate defluorure
US1456594A (en) * 1922-04-03 1923-05-29 Grasselli Chemical Co Process of making sodium-silico fluoride
US2053319A (en) * 1934-06-07 1936-09-08 Blockson Chemical Co Purifying treatment for alkali metal phosphate solutions
US2271712A (en) * 1939-12-19 1942-02-03 Du Pont Manufacture of sodium phosphate
US3055733A (en) * 1959-03-04 1962-09-25 Swift & Co Upgrading alkali metal silicofluoride
US3625648A (en) * 1969-12-15 1971-12-07 American Cyanamid Co Recovery of fluorine and p2o5 from dilute aqueous acidic phosphatic solutions
US4134964A (en) * 1974-10-04 1979-01-16 Hoechst Aktiengesellschaft Process and apparatus for purifying wet-processed phosphoric acid
US4053561A (en) * 1975-08-14 1977-10-11 Stauffer Chemical Company Removal of fluorine from phosphatic solutions
SU724440A1 (ru) * 1979-02-19 1980-03-30 Ленинградский Государственный Научно-Исследовательский И Проектный Институт Основной Химической Промышленности Способ получени обесфторенного диаммонийфосфата

Also Published As

Publication number Publication date
EP0129784A2 (fr) 1985-01-02
PH21066A (en) 1987-07-10
CA1217025A (fr) 1987-01-27
BR8403015A (pt) 1985-05-28
EP0129784A3 (en) 1986-07-30
IL72182A0 (en) 1984-10-31
DE3322503A1 (de) 1985-01-10
EP0129784B1 (fr) 1988-10-26
JPS6011213A (ja) 1985-01-21
ZA844737B (en) 1985-02-27
MX161627A (es) 1990-11-23
ES8502060A1 (es) 1985-01-01
US4620966A (en) 1986-11-04
IL72182A (en) 1987-09-16
TR22223A (tr) 1986-10-07
ES532832A0 (es) 1985-01-01
DE3474811D1 (en) 1988-12-01

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