GB1224043A - The continuous production of alkali metal salts of nitrilotriacetic acid - Google Patents
The continuous production of alkali metal salts of nitrilotriacetic acidInfo
- Publication number
- GB1224043A GB1224043A GB33093/68A GB3309368A GB1224043A GB 1224043 A GB1224043 A GB 1224043A GB 33093/68 A GB33093/68 A GB 33093/68A GB 3309368 A GB3309368 A GB 3309368A GB 1224043 A GB1224043 A GB 1224043A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkali metal
- acid
- ammonia
- reaction
- stages
- 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
- 229910052783 alkali metal Inorganic materials 0.000 title abstract 6
- -1 alkali metal salts Chemical class 0.000 title abstract 6
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical class OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 title abstract 3
- 238000010924 continuous production Methods 0.000 title abstract 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 8
- 238000006243 chemical reaction Methods 0.000 abstract 5
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 abstract 4
- 229910021529 ammonia Inorganic materials 0.000 abstract 4
- 229960002449 glycine Drugs 0.000 abstract 2
- 235000013905 glycine and its sodium salt Nutrition 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- DHMQDGOQFOQNFH-UHFFFAOYSA-M Aminoacetate Chemical compound NCC([O-])=O DHMQDGOQFOQNFH-UHFFFAOYSA-M 0.000 abstract 1
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 239000002585 base Substances 0.000 abstract 1
- 239000006227 byproduct Substances 0.000 abstract 1
- NBZBKCUXIYYUSX-UHFFFAOYSA-N iminodiacetic acid Chemical class OC(=O)CNCC(O)=O NBZBKCUXIYYUSX-UHFFFAOYSA-N 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C229/00—Compounds containing amino and carboxyl groups bound to the same carbon skeleton
- C07C229/02—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton
- C07C229/04—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated
- C07C229/06—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having only one amino and one carboxyl group bound to the carbon skeleton
- C07C229/10—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having only one amino and one carboxyl group bound to the carbon skeleton the nitrogen atom of the amino group being further bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings
- C07C229/16—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having only one amino and one carboxyl group bound to the carbon skeleton the nitrogen atom of the amino group being further bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings to carbon atoms of hydrocarbon radicals substituted by amino or carboxyl groups, e.g. ethylenediamine-tetra-acetic acid, iminodiacetic acids
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C227/00—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton
- C07C227/12—Formation of amino and carboxyl groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C227/00—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C229/00—Compounds containing amino and carboxyl groups bound to the same carbon skeleton
- C07C229/02—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton
- C07C229/04—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated
- C07C229/24—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having more than one carboxyl group bound to the carbon skeleton, e.g. aspartic acid
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,224,043. Production of alkali metal salts of nitrilotriacetic acid. BADISCHE ANILIN & SODA-FABRIK A.G. 11 July, 1968 [12 July, 1967], No. 33093/68. Heading C2C. A process for the continuous production of alkali metal salts of nitrilotriacetic acid from alkali metal cyanide, formaldehyde and ammonia, comprises carrying out the reaction in at least two stages, wherein in a first stage alkali metal cyanide is reacted with formaldehyde in a stoichiometric or substantially stoichiometric ratio at temperatures of 50-200 C. and a pressure of 2 to 50 atmospheres gauge in the presence of excess ammonia to form a solution which contains predominantly aminoacetate, and treating the solution thus obtained after depressurizing to atmospheric pressure in a further stage or in several further stages whilst simultaneously removing ammonia with further amounts of alkali metal cyanide and formaldehyde at temperatures of 60-110 C. to effect conversion of the aminoacetic acid to nitrotriacetic acid. The different stages of the process are preferably effected in separate vessels and the reaction may be effected in the presence or absence of added base. The ammonia may be removed in the second and subsequent stages of the reaction by the passage of a gas which is inert under the reaction conditions, e.g. N 2 , O 2 or steam. Small amounts of by-products, e.g. aminoacetic acid and iminodiacetic acid salts, may also be formed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1643232A DE1643232C3 (en) | 1967-07-12 | 1967-07-12 | Process for the continuous production of alkali salts of nitrilotriacetic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1224043A true GB1224043A (en) | 1971-03-03 |
Family
ID=5684267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB33093/68A Expired GB1224043A (en) | 1967-07-12 | 1968-07-11 | The continuous production of alkali metal salts of nitrilotriacetic acid |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE718046A (en) |
| CH (1) | CH491860A (en) |
| DE (1) | DE1643232C3 (en) |
| FR (1) | FR1571994A (en) |
| GB (1) | GB1224043A (en) |
| NL (1) | NL6809847A (en) |
| SE (1) | SE364949B (en) |
-
1967
- 1967-07-12 DE DE1643232A patent/DE1643232C3/en not_active Expired
-
1968
- 1968-07-10 SE SE09514/68A patent/SE364949B/xx unknown
- 1968-07-11 GB GB33093/68A patent/GB1224043A/en not_active Expired
- 1968-07-11 CH CH1034268A patent/CH491860A/en not_active IP Right Cessation
- 1968-07-11 NL NL6809847A patent/NL6809847A/xx unknown
- 1968-07-12 BE BE718046D patent/BE718046A/xx unknown
- 1968-07-12 FR FR1571994D patent/FR1571994A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1643232B2 (en) | 1974-04-11 |
| DE1643232A1 (en) | 1971-05-27 |
| NL6809847A (en) | 1969-01-14 |
| SE364949B (en) | 1974-03-11 |
| CH491860A (en) | 1970-06-15 |
| FR1571994A (en) | 1969-06-20 |
| DE1643232C3 (en) | 1974-11-14 |
| BE718046A (en) | 1969-01-13 |
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