Inorganic Acids, Not Elsewhere Specified or Included

China leads US import supply of this residual inorganic acids category, which captures commercially significant substances not classified under more specific headings, including arsenic acid (2811191000), hydrobromic acid (2811193000), and sulfamic acid (2811196110), alongside a broader basket of other inorganic acids (2811196190 and 2811190002). Sulfamic acid, widely used in descaling, metal cleaning, and electroplating, and hydrobromic acid, a key reagent in pharmaceutical synthesis and flame-retardant production, represent the highest-volume lines for many importers. Germany, Malaysia, South Korea, and Taiwan are also significant suppliers. Several lines within this heading may be subject to Section 301 tariffs depending on country of origin.