Control of moisture content in anhydrous hydrogen fluoride
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Our company uses anhydrous hydrogen fluoride on a daily basis; some manufacturers achieve a moisture level of 50 ppM, while others manage to reduce it to 15 ppM. Too high a moisture content leads to a decrease in product yield! I wonder how much the best can be achieved domestically? Colleagues who are interested might as well share their experiences!
Laboratory molecular sieves are used to absorb moisture, reducing it to 8 ppm; it is a fluorinated refrigerant, not HF.