HTS code 2852.90.05.00 covers "Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams › Other › Albuminates, tannates and phosphides of mercury" under the US Harmonized Tariff Schedule. This is the official duty rate charged by US Customs when this product is imported into the United States, sourced directly from the U.S. International Trade Commission and refreshed daily.