HTS code 3824.99.21.00 covers "Prepared binders for foundry molds or cores; chemical products and preparations of the chemical or allied industries (including those consisting of mixtures of natural products), not elsewhere specified or included › Sorbitol other than that of subheading 2905.44 › Other › Other › Consisting wholly of substances found naturally in coal tar, whether obtained from coal tar or other source" 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.