GB1199041A - Purification of Phosphoric Acid - Google Patents

Purification of Phosphoric Acid

Info

Publication number
GB1199041A
GB1199041A GB32387/67A GB3238767A GB1199041A GB 1199041 A GB1199041 A GB 1199041A GB 32387/67 A GB32387/67 A GB 32387/67A GB 3238767 A GB3238767 A GB 3238767A GB 1199041 A GB1199041 A GB 1199041A
Authority
GB
United Kingdom
Prior art keywords
technical grade
parent specification
phosphoric acid
extraction
solvent
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
GB32387/67A
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.)
ISRAEL MINING IND INST FOR RES
Original Assignee
ISRAEL MINING IND INST FOR RES
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 ISRAEL MINING IND INST FOR RES filed Critical ISRAEL MINING IND INST FOR RES
Publication of GB1199041A publication Critical patent/GB1199041A/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
    • C01B25/18—Phosphoric acid
    • C01B25/234—Purification; Stabilisation; Concentration

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1,199,041. Phosphoric acid. ISRAEL MINING INDUSTRIES, INSTITUTE FOR RESEARCH & DEVELOPMENT. 1 Aug., 1967 [2 Aug., 1966], No. 32387/67. Addition to 1,112,033. Heading C1A. Improvements to the process of the parent Specification (1,112,033) in which purified H 3 PO 4 is recovered from technical grade H 3 PO 4 comprise first the incorporation of 0À1 to 5% by weight of H 2 SO 4 in the technical grade H 3 PO 4 before extraction, and, secondly, the addition of 30 to 100% by weight of H 2 SO 4 to the residual technical grade acid prior to a further extraction with organic solvent as defined in the parent Specification The mixture of purified H 3 PO 4 and H 2 SO 4 may be obtained from the second solvent extract by heating the extract to a temperature higher than that at which the extraction is effected (as in the parent Specification). The solvent may be diethyl, di-iso-propyl, di-nbutyl, iso-propyl-n-butyl, di-n-amyl, or di-isoamyl ether.
GB32387/67A 1964-03-30 1967-08-01 Purification of Phosphoric Acid Expired GB1199041A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL2107164 1964-03-30
IL2625666 1966-08-02

Publications (1)

Publication Number Publication Date
GB1199041A true GB1199041A (en) 1970-07-15

Family

ID=11043989

Family Applications (2)

Application Number Title Priority Date Filing Date
GB16289/69A Expired GB1199042A (en) 1964-03-30 1967-08-01 Purification of Phosphoric Acid
GB32387/67A Expired GB1199041A (en) 1964-03-30 1967-08-01 Purification of Phosphoric Acid

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB16289/69A Expired GB1199042A (en) 1964-03-30 1967-08-01 Purification of Phosphoric Acid

Country Status (5)

Country Link
DE (1) DE1667557B2 (en)
FR (1) FR92917E (en)
GB (2) GB1199042A (en)
NL (1) NL6710220A (en)
SE (1) SE341177B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU66958A1 (en) * 1973-02-02 1974-09-25
US4277455A (en) 1978-10-16 1981-07-07 Albright & Wilson Limited Process for purifying phosphoric acid

Also Published As

Publication number Publication date
DE1667557B2 (en) 1977-09-15
SE341177B (en) 1971-12-20
NL6710220A (en) 1968-02-05
GB1199042A (en) 1970-07-15
FR92917E (en) 1969-01-17
DE1667557A1 (en) 1971-07-08

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Legal Events

Date Code Title Description
PS Patent sealed
PE Patent expired