JPS5520203A - Phosphoric acid purifying method - Google Patents

Phosphoric acid purifying method

Info

Publication number
JPS5520203A
JPS5520203A JP8887978A JP8887978A JPS5520203A JP S5520203 A JPS5520203 A JP S5520203A JP 8887978 A JP8887978 A JP 8887978A JP 8887978 A JP8887978 A JP 8887978A JP S5520203 A JPS5520203 A JP S5520203A
Authority
JP
Japan
Prior art keywords
phosphoric acid
solvent
soln
extracted
org
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.)
Granted
Application number
JP8887978A
Other languages
Japanese (ja)
Other versions
JPS5839767B2 (en
Inventor
Hiroaki Ishibashi
Shizuo Tagami
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.)
JNC Corp
Original Assignee
Chisso Corp
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 Chisso Corp filed Critical Chisso Corp
Priority to JP8887978A priority Critical patent/JPS5839767B2/en
Priority to MA18730A priority patent/MA18533A1/en
Publication of JPS5520203A publication Critical patent/JPS5520203A/en
Publication of JPS5839767B2 publication Critical patent/JPS5839767B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To efficiently obtain pure phosphoric acid of high quality with a simple apparatus by extraction-purifying wet process phosphoric acid contg. impurities with a sater wol. low b.p. org. solvent and 2-ethyl hexanol in order.
CONSTITUTION: A phosphoric acid soln. contg. many impurities such as Fe, F, As and Cd manufactured by a wet process is extracted with a water sol. low b.p. org. solvent such as methanol, ehtanol or acetone. Caustic soda, ammonia or the like is added to the extracted soln. in a molar ratio of 1:0.05W0.4 to phosphoric acid in the soln. to partially neutralize the soln. After separation-removing precipitates formed the solvent is distilled off. The distillation residue is treated with 2-ethyl hexanol or a mixed solvent of the above solvent and diisopropyl carbinol to extract phosphoric acid, which is back-extracted with water. The aq. phase is then treated with activated carbon and concentrated to obtain pure phosphoric acid.
COPYRIGHT: (C)1980,JPO&Japio
JP8887978A 1978-07-20 1978-07-20 Phosphoric acid purification method Expired JPS5839767B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP8887978A JPS5839767B2 (en) 1978-07-20 1978-07-20 Phosphoric acid purification method
MA18730A MA18533A1 (en) 1978-07-20 1979-07-18 INSECTICIDE COMPOSITIONS CONTAINING PYRETHRINE SERIES COMPOUNDS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8887978A JPS5839767B2 (en) 1978-07-20 1978-07-20 Phosphoric acid purification method

Publications (2)

Publication Number Publication Date
JPS5520203A true JPS5520203A (en) 1980-02-13
JPS5839767B2 JPS5839767B2 (en) 1983-09-01

Family

ID=13955279

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8887978A Expired JPS5839767B2 (en) 1978-07-20 1978-07-20 Phosphoric acid purification method

Country Status (2)

Country Link
JP (1) JPS5839767B2 (en)
MA (1) MA18533A1 (en)

Also Published As

Publication number Publication date
JPS5839767B2 (en) 1983-09-01
MA18533A1 (en) 1980-04-01

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