GB299796A - Improvements in the production of ammonium phosphates from mono- or di-calcium phosphate - Google Patents

Improvements in the production of ammonium phosphates from mono- or di-calcium phosphate

Info

Publication number
GB299796A
GB299796A GB1729227A GB1729227A GB299796A GB 299796 A GB299796 A GB 299796A GB 1729227 A GB1729227 A GB 1729227A GB 1729227 A GB1729227 A GB 1729227A GB 299796 A GB299796 A GB 299796A
Authority
GB
United Kingdom
Prior art keywords
phosphate
calcium
mono
treated
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
GB1729227A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB1729227A priority Critical patent/GB299796A/en
Publication of GB299796A publication Critical patent/GB299796A/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
    • C01B25/26—Phosphates
    • C01B25/28—Ammonium phosphates
    • 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
    • C01B25/38—Condensed phosphates
    • C01B25/40—Polyphosphates
    • C01B25/405—Polyphosphates of ammonium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)

Abstract

299,796. Johnson, J. Y., (1. G. Farbenindustrie Akt.-Ges.). June 29, 1927. Ammonium phosphate.-Mono- and di-calcium phosphates are treated in presence of water with ammonia or ammonium carbonate to yield a solution of ammonium phosphate and a residue of difficultly soluble calcium triphosphate, which is treated with acid to form further quantities of mono- and di-calcium phosphate. The reaction may be carried out under pressure and at raised temperatures. The conversion of the tricalcium phosphate may be effected by phosphoric acid, prepared by combustion of elementary phosphorus or by treating crude phosphate with sulphuric acid in which case calcium sulphate may be filtered or before or after the reaction with tri-calcium phosphate or with hydrochloric or nitric acid, in which case mono- or di-calcium phosphate may be separated by crystallization from calcium chloride or nitrate. Similar separations may be effected when the precipitated tricalcium phosphate is treated with sulphuric. hydrochloric or nitric acids.
GB1729227A 1927-06-29 1927-06-29 Improvements in the production of ammonium phosphates from mono- or di-calcium phosphate Expired GB299796A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1729227A GB299796A (en) 1927-06-29 1927-06-29 Improvements in the production of ammonium phosphates from mono- or di-calcium phosphate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1729227A GB299796A (en) 1927-06-29 1927-06-29 Improvements in the production of ammonium phosphates from mono- or di-calcium phosphate

Publications (1)

Publication Number Publication Date
GB299796A true GB299796A (en) 1928-10-29

Family

ID=10092626

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1729227A Expired GB299796A (en) 1927-06-29 1927-06-29 Improvements in the production of ammonium phosphates from mono- or di-calcium phosphate

Country Status (1)

Country Link
GB (1) GB299796A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415464A (en) * 1943-07-03 1947-02-11 Solvay Process Co Process for ammoniating acid phosphates
US2683075A (en) * 1951-06-05 1954-07-06 Cannac Res And Dev Company Digestion of phosphate rock

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415464A (en) * 1943-07-03 1947-02-11 Solvay Process Co Process for ammoniating acid phosphates
US2683075A (en) * 1951-06-05 1954-07-06 Cannac Res And Dev Company Digestion of phosphate rock

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