JPS5493695A - Removing method for organic matter in phosphoric acid - Google Patents
Removing method for organic matter in phosphoric acidInfo
- Publication number
- JPS5493695A JPS5493695A JP28078A JP28078A JPS5493695A JP S5493695 A JPS5493695 A JP S5493695A JP 28078 A JP28078 A JP 28078A JP 28078 A JP28078 A JP 28078A JP S5493695 A JPS5493695 A JP S5493695A
- Authority
- JP
- Japan
- Prior art keywords
- phosphoric acid
- org
- matter
- soln
- pref
- 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
Links
Abstract
PURPOSE: To remove org. matter, esp. uncolored org. matter contained in a wet process phosphoric acid soln. in an industrially advantageous manner by adding a specific amt. of KMnO4 and HNO3 to the soln. and carrying out heat treatment to exhibit the synergistic effect of the chemicals.
CONSTITUTION: To a wet process phosphoric acid soln. contg. org. matter are added more than 0.05, pref. 0.2W3% of KMnO4 on the basis of H3PO4 and more than 0.5, pref. 2W7% of HNO3. This soln. is then heat treated at above 70, pref. 70W130, esp. about 100°C. The resulting phosphoric acid soln. is highly heat stable and is not colored again even if concentrated by heating at high temp. By applying this method in combination with a known purification method using org. solvent extraction, high purity phosphoric acid for industrial, pharmaceutical and food additive uses is obtd. contg. little metal ions, etc. as well as no org. matter.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28078A JPS5493695A (en) | 1978-01-06 | 1978-01-06 | Removing method for organic matter in phosphoric acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28078A JPS5493695A (en) | 1978-01-06 | 1978-01-06 | Removing method for organic matter in phosphoric acid |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5493695A true JPS5493695A (en) | 1979-07-24 |
JPS5731525B2 JPS5731525B2 (en) | 1982-07-05 |
Family
ID=11469483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP28078A Granted JPS5493695A (en) | 1978-01-06 | 1978-01-06 | Removing method for organic matter in phosphoric acid |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5493695A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2470090A1 (en) * | 1979-11-20 | 1981-05-29 | Rhone Poulenc Ind | PROCESS FOR PURIFYING A PHOSPHORIC ACID FROM WETWAY |
CN106145075A (en) * | 2016-06-30 | 2016-11-23 | 四川大学 | Produce the combined extraction method of high-quality phosphoric acid |
-
1978
- 1978-01-06 JP JP28078A patent/JPS5493695A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2470090A1 (en) * | 1979-11-20 | 1981-05-29 | Rhone Poulenc Ind | PROCESS FOR PURIFYING A PHOSPHORIC ACID FROM WETWAY |
CN106145075A (en) * | 2016-06-30 | 2016-11-23 | 四川大学 | Produce the combined extraction method of high-quality phosphoric acid |
Also Published As
Publication number | Publication date |
---|---|
JPS5731525B2 (en) | 1982-07-05 |
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