IT938820B - Procedimento per eliminare il ferro dall acido fosforico - Google Patents

Procedimento per eliminare il ferro dall acido fosforico

Info

Publication number: IT938820B
Authority: IT; Italy
Prior art keywords: procedure; phosphoric acid; removing iron; iron; phosphoric
Prior art date: 1970-09-25

Application number

IT28836/71A

Other languages

English (en)

Original Assignee

Budenheim Rud A Oetker Chemie

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.)

1970-09-25

Filing date

1971-09-20

Publication date

1973-02-10

1971-09-20 Application filed by Budenheim Rud A Oetker Chemie filed Critical Budenheim Rud A Oetker Chemie

1973-02-10 Application granted granted Critical

1973-02-10 Publication of IT938820B publication Critical patent/IT938820B/it

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
- C01B25/461—Preparation involving solvent-solvent extraction the phosphoric acid present in the medium obtained after reaction being first extracted from the liquid phase formed or separated then re-extracted as free acid by using water or as a phosphate by using a basic compound
- 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
- C01B25/237—Selective elimination of 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
- C01B25/46—Preparation involving solvent-solvent extraction
- C01B25/461—Preparation involving solvent-solvent extraction the phosphoric acid present in the medium obtained after reaction being first extracted from the liquid phase formed or separated then re-extracted as free acid by using water or as a phosphate by using a basic compound
- C01B25/462—Preparation involving solvent-solvent extraction the phosphoric acid present in the medium obtained after reaction being first extracted from the liquid phase formed or separated then re-extracted as free acid by using water or as a phosphate by using a basic compound the extracting agent being alcohol or a mixture of alcohols

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Inorganic Chemistry (AREA)
Analytical Chemistry (AREA)
Chemical Kinetics & Catalysis (AREA)
Removal Of Specific Substances (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

IT28836/71A 1970-09-25 1971-09-20 Procedimento per eliminare il ferro dall acido fosforico IT938820B (it)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE2047261A DE2047261C3 (de)	1970-09-25	1970-09-25	Verfahren zur Entfernung von Eisen aus Phosphorsäure

Publications (1)

Publication Number	Publication Date
IT938820B true IT938820B (it)	1973-02-10

Family

ID=5783392

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT28836/71A IT938820B (it)	1970-09-25	1971-09-20	Procedimento per eliminare il ferro dall acido fosforico

Country Status (8)

Country	Link
US (1)	US3784678A (it)
BE (1)	BE772743A (it)
DE (1)	DE2047261C3 (it)
FR (1)	FR2108490A5 (it)
GB (1)	GB1314281A (it)
IT (1)	IT938820B (it)
NL (1)	NL7113054A (it)
SE (1)	SE370380B (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4070443A (en) *	1976-02-13	1978-01-24	Toyo Soda Manufacturing Co., Ltd.	Process for removing sulfate ions from extracted phosphoric acid with a barium compound
JPS5297389A (en) *	1976-02-13	1977-08-16	Toyo Soda Mfg Co Ltd	Removal of sulfate ion in extracted phosphoric acid
US4190634A (en) *	1978-05-08	1980-02-26	Monsanto Company	Purifying phosphoric acid by extraction with an aliphatic nitrile
FR2437377A1 (fr) *	1978-09-29	1980-04-25	Rhone Poulenc Ind	Procede d'obtention d'un acide phosphorique desulfate pour usage alimentaire
WO2022182909A1 (en) *	2021-02-25	2022-09-01	Jesa Technologies Llc	Method for removing heavy metals in the manufacture of phosphoric acid

1970
- 1970-09-25 DE DE2047261A patent/DE2047261C3/de not_active Expired
1971
- 1971-09-06 GB GB4136171A patent/GB1314281A/en not_active Expired
- 1971-09-17 BE BE772743A patent/BE772743A/xx unknown
- 1971-09-17 FR FR7134330A patent/FR2108490A5/fr not_active Expired
- 1971-09-20 IT IT28836/71A patent/IT938820B/it active
- 1971-09-20 US US00182240A patent/US3784678A/en not_active Expired - Lifetime
- 1971-09-23 NL NL7113054A patent/NL7113054A/xx unknown
- 1971-09-24 SE SE7112120A patent/SE370380B/xx unknown

Also Published As

Publication number	Publication date
US3784678A (en)	1974-01-08
NL7113054A (it)	1972-03-28
DE2047261B2 (de)	1974-11-28
FR2108490A5 (it)	1972-05-19
DE2047261A1 (de)	1972-03-30
GB1314281A (en)	1973-04-18
SE370380B (it)	1974-10-14
BE772743A (fr)	1972-01-17
DE2047261C3 (de)	1975-07-17

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