United States or Lebanon ? Vote for the TOP Country of the Week !
The zinc may be supposed to remove oxygen from the acid sulphite, NaHSO , giving hyposulphite, NaHS0 . The reduction of the acid sulphite is best performed in a cask, which can be closed at the top, so as to avoid entrance of air. The liquid is then mixed with milk of lime, and after again thoroughly stirring, the liquid is allowed to settle, and the clear is decanted into the dyeing-copper.
Word Of The Day