PCB Etchant Solution
Ammonium persulfate-based mixture with sulfuric acid for etching copper from circuit boards. 3824.99.93 as electronics manufacturing chemical preparation. Selective copper removal for PCB fabrication.
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More Specific Codes
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pure ammonium persulfate
Individual inorganic chemicals in Chapter 28.
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Import Tips & Compliance
• Spent etchants may be 3825 wastes; import fresh only
• Concentration details critical for classification
• Corrosive labeling mandatory
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