Assertion: crude methionine | /r/HasProperty | precipitated
Facets:
Source sentences:
text: In a process for the synthesis of methionine the steps which comprise heating methionine nitrile with aqueous sulfuric acid, neutralizing the resultant hydrolysis product with ammonia to a pH of about 5 to 6, cooling the resultant mixture to about 30 0., adding ammonium sulfate directly to the cooled mixture whereby crude methionine is precipitated, and separating the resultant precipitated cru'demethionine therefrom.