BS 4993-1:1974现行
Methods of test for aluminium fluoride for industrial use. Determination of fluorine content
出版：British Standards Institution
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基本信息
标准编号： BS 4993-1:1974
发布时间：1974/2/28 0:00:00
标准类别：Standard
出版单位：British Standards Institution
标准页数：10
标准简介
Fusion of a test portion with sodium carbonate and separation of the fluorine by distillation with sulphuric acid. Titration of the distillate with thorium nitrate solution using either sodium alizarinsulphonate with or without methylene blue as masking agents, or methylthymol blue as indicator.
标准备注
© British Standards Institution 2013
