Assertion: pyridine | /r/CapableOf | say crude reaction mixture
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Source sentences:
text: 5-ethyl pyridine, high boiling by-prodnets and water which comprises adding to said crude reaction mixture at least 4 grams of sodium hydroxide'for every grams of said monomethylol and polymethylol derivatives and high boiling by-products, distilling off substantially all the water originally in said reaction mixture under a reduced pressure not above about 100 mm. of mercury absolute, after the removal of said water continuing said distillation with progressive reduction in pressure to not above about 14 mm. of mercury absolute and at temperatures at which the remaining unreacted Z-methyl,