IT1251707B - Process for the production of N- phosphonomethyliminodiacetic acid - Google Patents
Process for the production of N- phosphonomethyliminodiacetic acidInfo
- Publication number
- IT1251707B IT1251707B ITTO910744A ITTO910744A IT1251707B IT 1251707 B IT1251707 B IT 1251707B IT TO910744 A ITTO910744 A IT TO910744A IT TO910744 A ITTO910744 A IT TO910744A IT 1251707 B IT1251707 B IT 1251707B
- Authority
- IT
- Italy
- Prior art keywords
- acid
- aqueous solution
- iminodiacetic
- hydrochloric acid
- phosphonomethyliminodiacetic
- Prior art date
Links
- AZIHIQIVLANVKD-UHFFFAOYSA-N N-(phosphonomethyl)iminodiacetic acid Chemical compound OC(=O)CN(CC(O)=O)CP(O)(O)=O AZIHIQIVLANVKD-UHFFFAOYSA-N 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 8
- NBZBKCUXIYYUSX-UHFFFAOYSA-N iminodiacetic acid Chemical compound OC(=O)CNCC(O)=O NBZBKCUXIYYUSX-UHFFFAOYSA-N 0.000 abstract 4
- 239000007864 aqueous solution Substances 0.000 abstract 3
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 abstract 3
- 238000006243 chemical reaction Methods 0.000 abstract 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 abstract 2
- FAIAAWCVCHQXDN-UHFFFAOYSA-N phosphorus trichloride Chemical compound ClP(Cl)Cl FAIAAWCVCHQXDN-UHFFFAOYSA-N 0.000 abstract 2
- 239000012429 reaction media Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 230000007062 hydrolysis Effects 0.000 abstract 1
- 238000006460 hydrolysis reaction Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
Abstract
Process for the preparation of N- phosphonomethyliminodiacetic acid by the phosphonomethylation of iminodiacetic acid by reacting an aqueous solution of phosphorous acid and hydrochloric acid obtained by the hydrolysis of phosphorus trichloride with iminodiacetic acid and formaldehyde, in which: a) The phosphorus trichloride is hydrolysed with water or an aqueous solution of hydrochloric acid, controlling the reaction temperature and the quantity of water in such a way as to form an aqueous solution of hydrochloric acid and phosphorous acid in a molar ratio of 0.5:1 to 2:1 and causing gaseous hydrochloric acid to develop from the reaction medium, b) The phosphonomethylation reaction of the solution obtained in a) is performed in the presence of iminodiacetic acid in a molar ratio between iminodiacetic acid and phosphorous acid of 1:1 to 1:1.2 and with the addition of formaldehyde, and c) N-phosphonomethyliminodiacetic acid is recovered from the reaction medium. <IMAGE>
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITTO910744A IT1251707B (en) | 1991-10-01 | 1991-10-01 | Process for the production of N- phosphonomethyliminodiacetic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITTO910744A IT1251707B (en) | 1991-10-01 | 1991-10-01 | Process for the production of N- phosphonomethyliminodiacetic acid |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| ITTO910744A0 ITTO910744A0 (en) | 1991-10-01 |
| ITTO910744A1 ITTO910744A1 (en) | 1993-04-01 |
| IT1251707B true IT1251707B (en) | 1995-05-20 |
Family
ID=11409617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ITTO910744A IT1251707B (en) | 1991-10-01 | 1991-10-01 | Process for the production of N- phosphonomethyliminodiacetic acid |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1251707B (en) |
-
1991
- 1991-10-01 IT ITTO910744A patent/IT1251707B/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| ITTO910744A1 (en) | 1993-04-01 |
| ITTO910744A0 (en) | 1991-10-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 0001 | Granted | ||
| TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19950731 |