ZA764655B - Food grade sodium phosphate from wet process phosphoric acid - Google Patents

Food grade sodium phosphate from wet process phosphoric acid

Info

Publication number
ZA764655B
ZA764655B ZA764655A ZA764655A ZA764655B ZA 764655 B ZA764655 B ZA 764655B ZA 764655 A ZA764655 A ZA 764655A ZA 764655 A ZA764655 A ZA 764655A ZA 764655 B ZA764655 B ZA 764655B
Authority
ZA
South Africa
Prior art keywords
phosphoric acid
sodium phosphate
wet process
food grade
process phosphoric
Prior art date
Application number
ZA764655A
Other languages
English (en)
Inventor
M Irani
Original Assignee
Stauffer Chemical Co
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 Stauffer Chemical Co filed Critical Stauffer Chemical Co
Publication of ZA764655B publication Critical patent/ZA764655B/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
    • C01B25/46—Preparation involving solvent-solvent extraction
    • 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
    • C01B25/301—Preparation from liquid orthophosphoric acid or from an acid solution or suspension of orthophosphates
    • C01B25/303—Preparation from liquid orthophosphoric acid or from an acid solution or suspension of orthophosphates with elimination of impurities

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)
ZA764655A 1975-08-14 1976-08-03 Food grade sodium phosphate from wet process phosphoric acid ZA764655B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/604,520 US3993733A (en) 1975-08-14 1975-08-14 Food grade alkali metal phosphates from wet process H3 PO4

Publications (1)

Publication Number Publication Date
ZA764655B true ZA764655B (en) 1977-07-27

Family

ID=24419927

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA764655A ZA764655B (en) 1975-08-14 1976-08-03 Food grade sodium phosphate from wet process phosphoric acid

Country Status (11)

Country Link
US (1) US3993733A (de)
JP (1) JPS5223599A (de)
BE (1) BE845151A (de)
BR (1) BR7605323A (de)
CA (1) CA1071380A (de)
DE (1) DE2635839A1 (de)
ES (1) ES450703A1 (de)
FR (1) FR2320904A1 (de)
IL (1) IL49929A (de)
NL (1) NL7609048A (de)
ZA (1) ZA764655B (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA774159B (en) * 1977-10-27 1978-07-26 Albright & Wilson Process for preparing phosphate salts
DE2855922A1 (de) * 1978-12-23 1980-07-10 Hoechst Ag Verfahren zur herstellung von zinkfreien alkaliphosphatloesungen
FR2447348A1 (fr) * 1979-01-24 1980-08-22 Rhone Poulenc Ind Procede de purification d'un acide phosphorique impur
US4297334A (en) * 1979-02-21 1981-10-27 Calgon Corporation Process for removing color bodies from brown phosphoric acid
US4256570A (en) * 1979-03-19 1981-03-17 International Minerals & Chemical Corporation Purification of phosphoric acid
US4341638A (en) * 1979-10-17 1982-07-27 International Minerals & Chemical Corp. Purification of phosphoric acid
US4285920A (en) * 1979-11-08 1981-08-25 Stauffer Chemical Company Solvent extraction process for preparing purified phosphoric acid and sodium phosphate salts
US4407725A (en) * 1980-08-21 1983-10-04 International Minerals & Chemical Corp. Regeneration of activated carbon
US4495165A (en) * 1983-10-03 1985-01-22 Gurza Guillermo R Method of purification of phosphoric acid
DE3434611A1 (de) * 1984-09-21 1986-04-03 Hoechst Ag, 6230 Frankfurt Verfahren zur reinigung von phosphorsaeure
IL78325A0 (en) * 1986-03-30 1986-07-31 Negev Phosphates Ltd Process for the manufacture of pure phosphate salts
US4751066A (en) * 1986-05-08 1988-06-14 Fmc Corporation Process for preparing alkali metal phosphate
DE3806822A1 (de) * 1988-03-03 1989-09-14 Hoechst Ag Kontinuierliches verfahren zur vollstaendigen entferung organischer verunreinigungen und vollstaendiger entfaerbung vorgereinigter nassphosphorsaeure
US4877594A (en) * 1988-12-13 1989-10-31 J. R. Simplot Co. Purification of phosphoric acid
CN101935027B (zh) * 2010-09-10 2012-06-27 华东理工大学 以工业级湿法磷酸制备食品级磷酸氢二铵的方法
CA2932421C (en) * 2013-12-02 2020-10-20 Ecophos S.A. Source of phosphate for agriculture and the food industry
CN106904586B (zh) * 2017-01-19 2019-02-19 赵常然 一种活性炭包膜材料与晶体磷酸一铵、二铵的联产方法
WO2021203123A1 (en) * 2020-03-31 2021-10-07 Johnson Matthey Public Limited Company Phosphate salts manufacturing processes
US20230234849A1 (en) * 2020-06-12 2023-07-27 Easymining Sweden Ab Production of Potassium Phosphates

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2044940A (en) * 1933-11-25 1936-06-23 Grasselli Chemical Co Preparation of a soluble phosphate
GB467843A (en) * 1936-01-06 1937-06-24 Kunstdunger Patent Verwertungs Method of separating fluorine and aluminium from solutions obtained by treatment of raw phosphate with acids
FR1011491A (fr) * 1949-02-18 1952-06-23 Ruhrchemie Ag Procédé pour la préparation de phosphates de sodium à partir de sulfate de sodium
US2970098A (en) * 1957-11-04 1961-01-31 Cecil B Ellis Electrodialysis apparatus
GB1052410A (de) * 1962-11-14
GB302485A (en) * 1963-04-01 1928-12-20 Saji Tsujita Improvements in or relating to distance meters
DE2029564C3 (de) * 1970-06-16 1978-06-22 Giulini Chemie Gmbh, 6700 Ludwigshafen Verfahren zur Herstellung von reinen Alkaliphosphaten aus Rohphosphorsäure
ZA746708B (en) * 1973-11-02 1975-11-26 Uss Eng & Consult Method of making high purity alkali metal phosphates from wet-process phosphoric acid

Also Published As

Publication number Publication date
IL49929A0 (en) 1976-08-31
BR7605323A (pt) 1977-08-09
IL49929A (en) 1978-08-31
FR2320904A1 (fr) 1977-03-11
CA1071380A (en) 1980-02-12
ES450703A1 (es) 1977-12-16
BE845151A (fr) 1977-02-14
US3993733A (en) 1976-11-23
NL7609048A (nl) 1977-02-16
DE2635839A1 (de) 1977-02-24
JPS5223599A (en) 1977-02-22
FR2320904B1 (de) 1979-09-07

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