GB1388249A - Process for producing anhydrous disodium phosphate - Google Patents

Process for producing anhydrous disodium phosphate

Info

Publication number
GB1388249A
GB1388249A GB3807073A GB3807073A GB1388249A GB 1388249 A GB1388249 A GB 1388249A GB 3807073 A GB3807073 A GB 3807073A GB 3807073 A GB3807073 A GB 3807073A GB 1388249 A GB1388249 A GB 1388249A
Authority
GB
United Kingdom
Prior art keywords
disodium phosphate
product
anhydrous disodium
saturated
phosphonic 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
GB3807073A
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.)
KAZAK LE G I PI OSNOVNOI KHIM
Original Assignee
KAZAK LE G I PI OSNOVNOI KHIM
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 KAZAK LE G I PI OSNOVNOI KHIM filed Critical KAZAK LE G I PI OSNOVNOI KHIM
Priority to GB3807073A priority Critical patent/GB1388249A/en
Publication of GB1388249A publication Critical patent/GB1388249A/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
    • C01B25/30—Alkali metal phosphates
    • C01B25/301—Preparation from liquid orthophosphoric acid or from an acid solution or suspension of orthophosphates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

1388249 Anhydrous disodium phosphate KAZAKHSKY FILIAL LENINGRADSKOGO GOSNDARSTVENUOGO I PROEKTNOGO INSTITUTA OSNOVNOI KHIMICHESKOI PROMYSHLENNOSTI and CHIMKENTSKY FOSFORNY ZAVOD IMEN1 10 Aug 1973 38070/73 Heading C1A A process for producing anhydrous disodium phosphate by reacting soda ash with phosphonic acid of 75-100% by wt. concentration in a solution of disodium phosphate saturated at 90-105‹ C. with the formation of a solid phase comprising the product and a liquid phase comprising a saturated disodium phosphate solution, followed by separating the phases. It is preferred to carry out the reaction using a columetric ratio of 1 : 3 between the solid and liquid phases. The process can be operated continuously by feeding the mother liquor, after separation of the product by, e.g. centrifuging, back to the reaction stage between soda ash and phosphonic acid at a temperature of 90-103‹ C. Figures are given for the particle size distribution of the product which are in the range 0À1-0À4 mm.
GB3807073A 1973-08-10 1973-08-10 Process for producing anhydrous disodium phosphate Expired GB1388249A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3807073A GB1388249A (en) 1973-08-10 1973-08-10 Process for producing anhydrous disodium phosphate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3807073A GB1388249A (en) 1973-08-10 1973-08-10 Process for producing anhydrous disodium phosphate

Publications (1)

Publication Number Publication Date
GB1388249A true GB1388249A (en) 1975-03-26

Family

ID=10400961

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3807073A Expired GB1388249A (en) 1973-08-10 1973-08-10 Process for producing anhydrous disodium phosphate

Country Status (1)

Country Link
GB (1) GB1388249A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4661331A (en) * 1984-09-24 1987-04-28 Monsanto Company Continuous process for preparing sodium orthophosphate slurries from natural soda ash and orthophosphoric acid
US4853200A (en) * 1984-09-24 1989-08-01 Monsanto Company Continuous process for preparing sodium orthophosphate slurries from natural soda ash orthophosphoric acid

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4661331A (en) * 1984-09-24 1987-04-28 Monsanto Company Continuous process for preparing sodium orthophosphate slurries from natural soda ash and orthophosphoric acid
US4853200A (en) * 1984-09-24 1989-08-01 Monsanto Company Continuous process for preparing sodium orthophosphate slurries from natural soda ash orthophosphoric acid

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Legal Events

Date Code Title Description
PS Patent sealed
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee