Assertion: lactic acid's group | /r/HasProperty | raised to the boiling point
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Source sentences:
text: The process of producing lactic acid from a lactate of one of the alkaline earth metals containing impurities which are not soluble in alcohol, which consists in dissolving the impure lactate in a solvent, selected fr"m the group consisting of ethyl alcohol, propyl alcohol and isopropyl alcohol of approximately 85% strength and water raised to the boiling point, thereby permitting the insoluble impurities to precipitate out and soluble impurities to go into solution, filtering off the insoluble impurities, adding sulphuric acid to the filtrate, removing the resulting sulphate by filtration, and then distilling off the alcohol and water to concentrate the free lactic acid therein.