JPS5459224A - Preparation of ethylenediaminetetraacetates - Google Patents
Preparation of ethylenediaminetetraacetatesInfo
- Publication number
- JPS5459224A JPS5459224A JP12356177A JP12356177A JPS5459224A JP S5459224 A JPS5459224 A JP S5459224A JP 12356177 A JP12356177 A JP 12356177A JP 12356177 A JP12356177 A JP 12356177A JP S5459224 A JPS5459224 A JP S5459224A
- Authority
- JP
- Japan
- Prior art keywords
- glycolonitrile
- alkali
- ethylenediamine
- hydrolyzed
- reacted
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain the title compounds of high purity in high yields, by hydrolyzing the reaction product between inexpensive glycolonitrile free of danger and ethylenediamine with an alkali, followed by addition of glycolonitrile and hydrolysis with an alkali.
CONSTITUTION: Ethylenediamine is reacted with glycolonitrile at ordinary temperature and pressure for about 1hr to form ethylenediaminediacetonitrile, which is hydrolyzed wiht an alkali, e.g. NaOH, etc. at a temperature of 60°C to the boiling point for 30min to 3hr to convert the nitrile group into the carboxylic acid (salt). Glycolonitrile is then reacted with the reaction mixture under the same conditions as described above, and the reaction product thus botained is hydrolyzed with an alkali to form the objective compounds. NH3 formed as a by-product is preferably driven out of the system quickly.
EFFECT: No need for dangerous hydrocyanic acid or sodium cyanide, and free from side reactions.
USE: Chelating compounds
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12356177A JPS5459224A (en) | 1977-10-17 | 1977-10-17 | Preparation of ethylenediaminetetraacetates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12356177A JPS5459224A (en) | 1977-10-17 | 1977-10-17 | Preparation of ethylenediaminetetraacetates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5459224A true JPS5459224A (en) | 1979-05-12 |
| JPS6129331B2 JPS6129331B2 (en) | 1986-07-05 |
Family
ID=14863627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12356177A Granted JPS5459224A (en) | 1977-10-17 | 1977-10-17 | Preparation of ethylenediaminetetraacetates |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5459224A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002047258A (en) * | 2000-08-01 | 2002-02-12 | Showa Denko Kk | Method for manufacturing n-isopropylglycine |
| CN1317261C (en) * | 2004-07-05 | 2007-05-23 | 西南师范大学 | Method of preparing ethylenediamine tetracetonitrile and ethylenediamine tetraacetic acid using hydroxy acetonitrile as raw material |
| CN106045867A (en) * | 2016-05-26 | 2016-10-26 | 河北诚信有限责任公司 | Process for synthesizing ethylenediamine-N-N'-disodium oxalic acid |
| CN113924286A (en) * | 2019-06-13 | 2022-01-11 | 陶氏环球技术有限责任公司 | Preparation of ethylenediaminetetraacetic acid |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0414739Y2 (en) * | 1984-09-03 | 1992-04-02 |
-
1977
- 1977-10-17 JP JP12356177A patent/JPS5459224A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002047258A (en) * | 2000-08-01 | 2002-02-12 | Showa Denko Kk | Method for manufacturing n-isopropylglycine |
| CN1317261C (en) * | 2004-07-05 | 2007-05-23 | 西南师范大学 | Method of preparing ethylenediamine tetracetonitrile and ethylenediamine tetraacetic acid using hydroxy acetonitrile as raw material |
| CN106045867A (en) * | 2016-05-26 | 2016-10-26 | 河北诚信有限责任公司 | Process for synthesizing ethylenediamine-N-N'-disodium oxalic acid |
| CN113924286A (en) * | 2019-06-13 | 2022-01-11 | 陶氏环球技术有限责任公司 | Preparation of ethylenediaminetetraacetic acid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6129331B2 (en) | 1986-07-05 |
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