BE793712A - Procede et appareil pour la preparation de l'acide phosphoreux - Google Patents

Procede et appareil pour la preparation de l'acide phosphoreux

Info

Publication number
BE793712A
BE793712A BE793712DA BE793712A BE 793712 A BE793712 A BE 793712A BE 793712D A BE793712D A BE 793712DA BE 793712 A BE793712 A BE 793712A
Authority
BE
Belgium
Prior art keywords
preparation
phosphorus acid
phosphorus
acid
Prior art date
Application number
Other languages
English (en)
French (fr)
Original Assignee
Knapsack 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
Priority claimed from DE19722200653 external-priority patent/DE2200653C3/de
Application filed by Knapsack Ag filed Critical Knapsack Ag
Publication of BE793712A publication Critical patent/BE793712A/xx

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Treating Waste Gases (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
BE793712D 1972-01-07 1973-01-05 Procede et appareil pour la preparation de l'acide phosphoreux BE793712A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722200653 DE2200653C3 (de) 1972-01-07 Verfahren und Vorrichtung zur Herstellung von phosphoriger Säure

Publications (1)

Publication Number Publication Date
BE793712A true BE793712A (fr) 1973-07-05

Family

ID=5832494

Family Applications (1)

Application Number Title Priority Date Filing Date
BE793712D BE793712A (fr) 1972-01-07 1973-01-05 Procede et appareil pour la preparation de l'acide phosphoreux

Country Status (8)

Country Link
US (1) US3859419A (de)
BE (1) BE793712A (de)
CA (1) CA983669A (de)
CH (1) CH584653A5 (de)
FR (1) FR2167704B1 (de)
GB (1) GB1374545A (de)
IT (1) IT976757B (de)
NL (1) NL174133C (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3714657A1 (de) * 1987-05-02 1988-11-10 Hoechst Ag Verfahren zur reinigung von phosphoriger saeure
WO1995013285A1 (en) * 1993-11-10 1995-05-18 E.I. Du Pont De Nemours And Company Process for the preparation of phosphorous acid/carboxylic acid mixed anhydrides and anhydrous phosphorous acid

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2670274A (en) * 1951-10-25 1954-02-23 Monsanto Chemicals Method of producing orthophosphoric acid
DE1206406B (de) * 1964-09-19 1965-12-09 Knapsack Ag Verfahren zur Herstellung von phosphoriger Saeure

Also Published As

Publication number Publication date
NL174133B (nl) 1983-12-01
US3859419A (en) 1975-01-07
FR2167704A1 (de) 1973-08-24
CH584653A5 (de) 1977-02-15
IT976757B (it) 1974-09-10
CA983669A (en) 1976-02-17
DE2200653B2 (de) 1977-06-23
DE2200653A1 (de) 1973-07-19
NL7300137A (de) 1973-07-10
FR2167704B1 (de) 1976-05-14
NL174133C (nl) 1984-05-01
GB1374545A (en) 1974-11-20

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Legal Events

Date Code Title Description
RE20 Patent expired

Owner name: KNAPSACK A.G.

Effective date: 19930105