标准摘要
[中文适用范围]： 在乙二醇存在下蒸发测试部分，并通过卡尔费休法和直接电测量来测定残留物的水含量。 本方法适用于含水量等于或大于50mg/kg的产品。 对于大于1000mg/kg的水含量，优选根据ISO 4276用无水甲醇稀释蒸发残余物并滴定稀释溶液的等分部分。 [外文原描述]： A test portion is evaporated in the presence of ethanediol and the water content of the residue is determined by the Karl Fischer method with direct electrometric measurement. The method is applicable to products having water contents equal to or greater than 50 mg/kg. For water contents greater than 1000 mg/kg it is preferable to dilute the evaporation residue with anhydrous methanol in accordance with ISO 4276 and titrate an aliquot portion of the diluted solution.
英文名称Liquefied anhydrous ammonia for industrial use — Determination of water content — Karl Fischer method