Such problems are discussed that low-acidity emerges in the quality analysis of hydrochloric acid and the chromogenic reaction of acidic-analysis indicator doesn′t work.
对盐酸质量分析中出现的酸度低、酸度分析指示剂不显色等问题进行了讨论。
The preparation process and experiment results of chlorinated paraffin-42 and high-purity hydrochloric acid from low-point paraffin by catalytic chlorination are described.
叙述了软蜡经预处理后加入某种稀释剂，经催化氯化合成氯蜡- 42，副产试剂级盐酸的工艺方法及实验结果。
The test and production process of liquid barium chloride synthesized by low grade witherite breeze and by-product hydrochloric acid were introduced.
介绍了全部采用低品位毒重石矿粉与副产盐酸反应生成合格的液体氯化钡的实验方法和生产工艺。
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