... free silicon dioxide 游离二氧化硅 free sodium hydroxide 游离氢氧化钠 free space 自由空间 ...
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Sodium hypochlorite solution has been prepared by chlorine and sodium hydroxide, the content of free alkali should be controlled at about 10.8%, and the effective chlorine at about 8.0%.
以氯气和氢氧化钠为原料制备次氯酸钠溶液，控制其中游离碱含量在10.8%左右，有效氯在8.0%左右。
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