GB1215664A - Process for improving color of phosphoric acid - Google Patents

Process for improving color of phosphoric acid

Info

Publication number
GB1215664A
GB1215664A GB2946869A GB2946869A GB1215664A GB 1215664 A GB1215664 A GB 1215664A GB 2946869 A GB2946869 A GB 2946869A GB 2946869 A GB2946869 A GB 2946869A GB 1215664 A GB1215664 A GB 1215664A
Authority
GB
United Kingdom
Prior art keywords
phosphoric acid
additives
chlorate
acid
colour
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
GB2946869A
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.)
Freeport Minerals Co
Original Assignee
Freeport Sulphur 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 Freeport Sulphur Co filed Critical Freeport Sulphur Co
Publication of GB1215664A publication Critical patent/GB1215664A/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
    • C01B25/235—Clarification; Stabilisation to prevent post-precipitation of dissolved impurities
    • 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
    • C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process

Landscapes

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

Abstract

1,215,664. Improving the colour of phosphonic acid. FREEPORT SULPHUR CO. 10 June, 1969 [9 July, 1968], No. 29468/69. Heading CIA. The colour of phosphoric acid produced by the wet process is improved by mixing either the components used to produce phosphoric acid or the acid subsequent to its production with one or more additives comprising inorganic hypochlorites, chlorites or chlorates. The concentration of the additives is from 0-5 to 25 pounds per ton of phosphorous pentoxide contained in the produced phosphoric acid. The phosphoric acid is treated with the additives after the digestion step and before the filtration step in its production. Specified additives include sodium hypochlorite, calcium hypochlorite, sodium chlorite, sodium chlorate, ammonium chlorate and potassium chlorate.
GB2946869A 1968-07-09 1969-06-10 Process for improving color of phosphoric acid Expired GB1215664A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74330768A 1968-07-09 1968-07-09

Publications (1)

Publication Number Publication Date
GB1215664A true GB1215664A (en) 1970-12-16

Family

ID=24988289

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2946869A Expired GB1215664A (en) 1968-07-09 1969-06-10 Process for improving color of phosphoric acid

Country Status (3)

Country Link
BE (1) BE735625A (en)
FR (1) FR2012544A1 (en)
GB (1) GB1215664A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2519960A1 (en) * 1982-01-18 1983-07-22 Toyo Soda Mfg Co Ltd PROCESS FOR REMOVING ORGANIC MATERIALS CONTAINED IN WET-PRODUCED PHOSPHORIC ACID

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5933526B2 (en) 1980-07-28 1984-08-16 セントラル硝子株式会社 Method for producing wet phosphoric acid with high uranium content

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2519960A1 (en) * 1982-01-18 1983-07-22 Toyo Soda Mfg Co Ltd PROCESS FOR REMOVING ORGANIC MATERIALS CONTAINED IN WET-PRODUCED PHOSPHORIC ACID
US4637922A (en) * 1982-01-18 1987-01-20 Toyo Soda Manufacturing Co., Ltd. Method for removing organic materials from a wet process phosphoric acid

Also Published As

Publication number Publication date
FR2012544A1 (en) 1970-03-20
BE735625A (en) 1970-01-05

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