ISO 3702-1976 标准详情
- 标准号:ISO 3702-1976
- 中文标题:工业用无水氟化氢;二氧化硫含量测定;碘量法
- 英文标题:anhydrous hydrogen fluoride for industrial use; determination of sulphur dioxide content; iodometric method
- 标准类别:国际标准化组织标准ISO
- 发布日期:1976-06-15
Applicable to products having SO2 contents between 0.002 % (m/m) and 0.20 % (m/m). The principle consists in addition of a measured volume of iodine solution to a test portion. Back-titration of the excess iodine using a standard volumetric sodium th
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