CA983669A - Process and apparatus for the manufacture of phosphorous acid - Google Patents

Process and apparatus for the manufacture of phosphorous acid

Info

Publication number
CA983669A
CA983669A CA160,672A CA160672A CA983669A CA 983669 A CA983669 A CA 983669A CA 160672 A CA160672 A CA 160672A CA 983669 A CA983669 A CA 983669A
Authority
CA
Canada
Prior art keywords
manufacture
phosphorous acid
phosphorous
acid
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA160,672A
Other languages
English (en)
Other versions
CA160672S (en
Inventor
Joseph Cremer
Willi Martin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoechst AG
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
Priority claimed from DE19722200653 external-priority patent/DE2200653C3/de
Application filed by Hoechst AG filed Critical Hoechst AG
Application granted granted Critical
Publication of CA983669A publication Critical patent/CA983669A/en
Expired legal-status Critical Current

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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Treating Waste Gases (AREA)
CA160,672A 1972-01-07 1973-01-05 Process and apparatus for the manufacture of phosphorous acid Expired CA983669A (en)

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
CA983669A true CA983669A (en) 1976-02-17

Family

ID=5832494

Family Applications (1)

Application Number Title Priority Date Filing Date
CA160,672A Expired CA983669A (en) 1972-01-07 1973-01-05 Process and apparatus for the manufacture of phosphorous acid

Country Status (8)

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

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
IT976757B (it) 1974-09-10
CH584653A5 (it) 1977-02-15
NL7300137A (it) 1973-07-10
FR2167704B1 (it) 1976-05-14
DE2200653A1 (de) 1973-07-19
US3859419A (en) 1975-01-07
NL174133C (nl) 1984-05-01
BE793712A (fr) 1973-07-05
NL174133B (nl) 1983-12-01
GB1374545A (en) 1974-11-20
FR2167704A1 (it) 1973-08-24
DE2200653B2 (de) 1977-06-23

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