FIELD: chemistry.
SUBSTANCE: method includes preparation of reaction solution by dissolving maleic anhydride in water, addition of solutions of alkaline reagent, representing lithium hydroxide, and 1,6-hexanediamine, boiling solution, bringing solution pH to 2.6 by means of concentrated solution of hydrobromic acid, product crystallisation, separation of crystals from solution, and purification of product from inorganic substances - by-products of reactions that take place on solution. Purification of final product from lithium bromide is carried out in one stage by means of hot acetone.
EFFECT: method makes it possible to obtain product of higher purity without loss of output.
1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PRODUCTION OF AMINO-2-HYDROXY-3-CHLOROPROPANE-N,N-DIACETIC ACID | 2015 |
|
RU2609868C1 |
| MESO-2,3-DIAMINOBUTANE-N,N'-DISUCCINIC ACID AS COMPLEXONE | 0 |
|
SU785302A1 |
| CIS-1,3-DIMINOCYCLOHEXANE-N,N'-DIMALONIC ACID AS COMPLEXING AGENT | 0 |
|
SU883018A1 |
| BIS-N,N-DIMETHYLAMINOMETHYLATED AROMATIO SCHIFF BASES AND METHOD OF PREPARATION THEREOF | 1998 |
|
RU2161603C2 |
| DIETHYLENETRIAMINE-N,N',N"-TRISUCCINIC ACID AS COMPLEXING AGENT | 0 |
|
SU771088A1 |
| METHOD OF SYNTHESIS OF POLY-N,N,N,N-TRIMETHYLMETHACRYLOYLHYDROXYETHYL AMMONIUM METHYLSULFATE | 1994 |
|
RU2088593C1 |
| METHOD OF PRODUCING COMPLEXING SORBENT | 2015 |
|
RU2585020C1 |
| HEPTAMETHYLENEDIAMINE N,N,N'-,N'-TETRAACETIC ACID AS COMPLEXING AGENT | 0 |
|
SU854926A1 |
| METHOD OF PRODUCTION OF LITHIUM BROMIDE FROM BRINES | 1998 |
|
RU2157339C2 |
| METHOD OF DISSOLVING SCALE-CORROSION DEPOSITS | 2014 |
|
RU2592952C2 |
