</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

Ascorbic Acid (Vitamin C) Lactone from Japan

Ascorbic acid contains a five-membered lactone ring with oxygen hetero-atom, falling under HTS 2932.20.50.50 as other lactones. This essential vitamin is used in food supplements, cosmetics, and pharmaceuticals for its antioxidant properties.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

Import Tips

Include FDA Certificate to Foreign Government for food/pharma grade imports with full chemical specification

Provide stability data showing lactone ring integrity to prevent reclassification as polyhydric alcohol

Declare vitamin content accurately; misdeclaration as 'other organic compound' risks penalties