| 单词 | mother-alkali |
| 释义 | > as lemmasmother-alkali mother-alkali n. now rare impure or weak soda ash (sodium carbonate) obtained by evaporating the liquid from the mother liquor of soda ash. ΚΠ 1880 J. Lomas Man. Alkali Trade 244 ‘Weak’ or ‘mother’ alkali is a fine powdery substance. 1910 Encycl. Brit. I. 682/2 The mother-liquor, drained from the soda-crystals, on boiling down to dryness yields a very white, but low-strength soda-ash, as the soluble impurities of the original soda-ash are nearly all collected here; it is called ‘mother-alkali’. < as lemmas |
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