Glucono-Delta-Lactone from Japan
Glucono-delta-lactone (GDL) is the lactone form of gluconic acid, chemically defined under additional U.S. note 3 as an oxygen-function carboxylic derivative. Falls under HTS 2918.99.4300 for these specified cyclic forms. Used as sequestrant and leavening agent in food.
Duty Rate — Japan → United States
21%
Rate breakdown
9903.04.628.5%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include lactone purity assay to distinguish from free acid forms
• GRAS status documentation speeds FDA clearance for food use
• Avoid Chapter 29 exclusion by confirming not excluded cyclic ester per notes