Arsenic compounds
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In hydrochloric acid, the original solution contained 46 grams of arsenic; after one night, a large amount of precipitate was observed. By the following night, only 13 grams of arsenic remained, and the white precipitate contained 12.21 degrees of chlorine! I’m asking the experts for some advice on how to remove chlorine from the precipitates in order to obtain arsenic white! I think the process of using antimony chlorooxide to produce antimony white can be used as a reference! I’m asking experts to provide some information on this topic!
What is the white precipitate? What are the specific ingredients of the original liquid? At this concentration of arsenic chloride, no precipitation occurs.
The white precipitate is a chloroarsenic compound; the components of the original solution are approximately 50 grams of arsenic, 1 gram of copper, and 1.26 grams of rhenium. The hydrochloric acid concentration is roughly 4 equivalents. Treat high-rhenium waste from copper plants with hydrochloric acid and sodium chlorate. The profit margin from producing rhenium using this waste is too high
The white precipitate should be arsenic trioxide; based on its composition, it should have a melting point of 61 degrees, but their tests showed an arsenic melting point of 57.75 degrees. It is estimated that high-quality arsenic trioxide products can be easily obtained