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如何檢測無水氯化鈣的含量
作者:     發布日期: 2019/12/16 16:56:02     人氣:

    無水氯化鈣的測定方法:
    1、加入過量的碳酸鈉溶液以產生碳酸鈣沉淀,然后洗滌并干燥沉淀,稱重碳酸鈣的質量,計算物質的量,即氯化鈣物質的量,然后計算鈣的質量氯化物。
    2、國家標準中用于校準的EDTA方法更加準確可靠。
    顆粒狀無水氯化鈣通常用作填充干燥管的干燥劑。用氯化鈣干燥的巨型藻類(或海藻灰)可用于生產純堿。一些家用除濕機尺寸DampRid將使用氯化鈣吸收空氣。由于氯化鈣是中性的,因此可以干燥酸性或堿性氣體和有機液體??梢酝瑫r在實驗室中準備少量氣體,例如氮氣,氧氣和蒸汽。干燥這些氣體時,請使用氯化氫,二氧化硫,二氧化碳,二氧化氮等。但是,不能使用干燥的乙醇和氨氣,因為乙醇和氨氣會與氯化鈣反應生成醇化物CaCl2·4C2H5OH和氨化物CaCl2 ·分別為8NH3。家用產品中包含無水氯化鈣作為空氣吸收劑。無水氯化鈣已被FDA批準用作吸收劑。它的作用是確保傷口干燥。
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無水氯化鈣

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