Help, why is the by-product hydrochloric acid reddish-brown?
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I have been working in the fluorine chemicals industry in production workshops for 10 years. Recently, the hydrochloric acid produced as a by-product has taken on a reddish-brown color; when new hydrochloric acid is used, it is slightly yellow and transparent, while when recycled hydrochloric acid is used, it remains reddish-brown. I would like to ask everyone what could be causing this issue and how it can be resolved
It seems a bit like that at the moment. Do you know how to remove iron ions?
Organofluorine materials, such as tetrafluoroethylene
Method of resin adsorption, binding, reduction, and complexation, anion exchange resin
Reduction and ion exchange resins are unreliable; avoid using acids unless necessary. The galvanizing industry uses natural gas to burn acid solutions, producing iron oxide and hydrochloric acid. It’s not cost-effective in small quantities.
I wondered how iron ions got in Where the control is not properly implemented
Thank you; the color of the hydrochloric acid has been properly controlled
Thank you, the cause has been identified; it’s not iron ions