Ammonia → HCID 86752830, compound

HRID 1604079Notes

Reaction equation

[C:1](=[O:4])([O-])[OH:2].[K+:5].[CH3:6][S:7][CH2:8][CH2:9][CH:10]1[NH:14]C(=O)NC1=O.N.C(=O)=O>O>[NH2:14][C@H:10]([C:1]([O-:2])=[O:4])[CH2:9][CH2:8][S:7][CH3:6].[K+:5]

Participants

Conditions

Temperature: 180 °C

Procedure

Using pump pressure, a solution of 100 kg of potassium hydrogen carbonate in aqueous solution and 41 kg of 5-(2-methylmercaptoethyl)-hydantoin in 400 l of water is fed hourly into a continuously operating pressurised column 8 made of special steel (compare FIG. 2) operated with steam. The reaction mixture is heated to 180° C. and has an average residence time of about 15 minutes at about 8 bar. Ammonia and carbon dioxide liberated is drawn off at the top of the reactor column by means of a pressure-maintaining valve. The reaction solution is depressurised at the bottom of the pressurised reactor and cooled with the heat exchanger 9. A quantity of 41.9 kg per hour of potassium methioninate in solution is obtained (94.5% of the theoretical).

Workup

customan average residence time of about 15 minutes
temperaturecooled with the heat exchanger 9

Sources & evidence

ORD record: ord-f34871c27a27478da9e7f10bfe710180
Source dataset: uspto-grants-1999_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05990349

Reaction notes

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