Sentence:  The mixture was then extracted with alkali and with water following which the <WSD>carbon</WSD> tetrachloride was distilled on a Vigreux column , a 25 % center cut being retained which was then degassed under vacuum in the presence of * * f . 
Meaning of the word marked with <WSD> tags:  a colorless nonflammable liquid used as a solvent for fats and oils; because of its toxicity its use as a cleaning fluid or fire extinguisher has declined