GB1318224A - Production of potassium dihydrogen phosphate - Google Patents
Production of potassium dihydrogen phosphateInfo
- Publication number
- GB1318224A GB1318224A GB5995770A GB1318224DA GB1318224A GB 1318224 A GB1318224 A GB 1318224A GB 5995770 A GB5995770 A GB 5995770A GB 1318224D A GB1318224D A GB 1318224DA GB 1318224 A GB1318224 A GB 1318224A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dihydrogen phosphate
- potassium dihydrogen
- phosphoric acid
- organic liquid
- precipitation
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Fertilizers (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
1318224 Potassium dihydrogen phosphate FITZWILTON Ltd 10 Dec 1971 [17 Dec 1970] 59957/70 Heading C1A A process for the production of potassium dihydrogen phosphate comprises reacting potassium chloride with phosphoric acid, or condensed phosphoric acid, in an amount such that the P : K molar ratio is in the range 1À9:1 to 2À5 : 1, at a temperature of 180-325 C. to produce a mixture containing complex phosphates, and having a residual chlorine concentration of less than 0À1% based on the weight of the reaction mixture, which are then hydrolysed with water, or a solution containing water (e.g. wet process phosphoric acid) before precipitation. Separation of the potassium dihydrogen phosphate may be achieved by crystallization but the best method is by precipitation of the potassium dihydrogen phosphate. The preferred method is by the addition of a low boiling point water-miscible organic liquid such as alcohol, ketone or soluble ether, in a weight ratio of 0À5 : 1 to 3 : 1 of organic liquid to total solution. After precipitation the organic liquid is stripped from the acid liquor by simple distillation, although other separation means are possible.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5995770 | 1970-12-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1318224A true GB1318224A (en) | 1973-05-23 |
Family
ID=10484746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5995770A Expired GB1318224A (en) | 1970-12-17 | 1970-12-17 | Production of potassium dihydrogen phosphate |
Country Status (15)
| Country | Link |
|---|---|
| AU (1) | AU452587B2 (en) |
| BE (1) | BE776793A (en) |
| CA (1) | CA958870A (en) |
| DD (1) | DD98892A5 (en) |
| DE (1) | DE2161849B2 (en) |
| ES (1) | ES397978A1 (en) |
| FR (1) | FR2118701A5 (en) |
| GB (1) | GB1318224A (en) |
| IE (1) | IE35900B1 (en) |
| IL (1) | IL38264A (en) |
| IT (1) | IT945255B (en) |
| MX (1) | MX3021E (en) |
| NL (1) | NL155801B (en) |
| SE (1) | SE370926B (en) |
| SU (1) | SU580824A3 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5055124A (en) * | 1988-10-31 | 1991-10-08 | Alpine Plant Foods Limited | Production of low-chloride fertilizers |
| CN116119634A (en) * | 2023-04-20 | 2023-05-16 | 诸城市浩天药业有限公司 | Method for improving clarity of potassium dihydrogen phosphate product prepared from corn soaking water |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MXPA03011064A (en) | 2003-12-02 | 2004-04-28 | Grupo Cementos De Chihuahua S | Cementing compositions of containing anhydrite and procedures for its fabrication. |
| RU2597117C1 (en) * | 2015-07-14 | 2016-09-10 | Открытое акционерное общество "Реатэкс" (ОАО "Реатэкс") | Method of producing disubstituted potassium phosphate |
-
1970
- 1970-12-17 GB GB5995770A patent/GB1318224A/en not_active Expired
-
1971
- 1971-11-30 NL NL7116474.A patent/NL155801B/en not_active IP Right Cessation
- 1971-11-30 IL IL38264A patent/IL38264A/en unknown
- 1971-12-03 IT IT54505/71A patent/IT945255B/en active
- 1971-12-07 SE SE7115679A patent/SE370926B/xx unknown
- 1971-12-07 SU SU7101723375A patent/SU580824A3/en active
- 1971-12-08 AU AU36630/71A patent/AU452587B2/en not_active Expired
- 1971-12-09 MX MX002426U patent/MX3021E/en unknown
- 1971-12-13 DE DE2161849A patent/DE2161849B2/en not_active Ceased
- 1971-12-15 DD DD159619A patent/DD98892A5/xx unknown
- 1971-12-15 ES ES397978A patent/ES397978A1/en not_active Expired
- 1971-12-16 IE IE1591/71A patent/IE35900B1/en unknown
- 1971-12-16 BE BE776793A patent/BE776793A/en unknown
- 1971-12-16 FR FR7145285A patent/FR2118701A5/fr not_active Expired
- 1971-12-17 CA CA130,364A patent/CA958870A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5055124A (en) * | 1988-10-31 | 1991-10-08 | Alpine Plant Foods Limited | Production of low-chloride fertilizers |
| CN116119634A (en) * | 2023-04-20 | 2023-05-16 | 诸城市浩天药业有限公司 | Method for improving clarity of potassium dihydrogen phosphate product prepared from corn soaking water |
| CN116119634B (en) * | 2023-04-20 | 2023-06-20 | 诸城市浩天药业有限公司 | Method for improving clarity of potassium dihydrogen phosphate product prepared from corn soaking water |
Also Published As
| Publication number | Publication date |
|---|---|
| AU452587B2 (en) | 1974-09-05 |
| IT945255B (en) | 1973-05-10 |
| DE2161849A1 (en) | 1972-06-22 |
| NL7116474A (en) | 1972-06-20 |
| IE35900B1 (en) | 1976-06-23 |
| NL155801B (en) | 1978-02-15 |
| FR2118701A5 (en) | 1972-07-28 |
| DD98892A5 (en) | 1973-07-12 |
| MX3021E (en) | 1980-02-13 |
| DE2161849B2 (en) | 1978-10-19 |
| CA958870A (en) | 1974-12-10 |
| IL38264A (en) | 1974-10-22 |
| IL38264A0 (en) | 1972-01-27 |
| IE35900L (en) | 1972-06-17 |
| BE776793A (en) | 1972-04-17 |
| AU3663071A (en) | 1973-06-14 |
| SE370926B (en) | 1974-11-04 |
| SU580824A3 (en) | 1977-11-15 |
| ES397978A1 (en) | 1974-07-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
| PCNP | Patent ceased through non-payment of renewal fee |