Sassolite Natural Boric Acid Crystals from Japan
Sassolite consists of natural boric acid (H3BO3) crystals from volcanic fumaroles, capped at 85% purity for this category. Used in pharmaceuticals and antiseptics precursors. HTS 2528.00.0050 includes this as natural boric acid not exceeding the purity limit, distinct from synthetic.
Duty Rate — Japan → United States
12.5%
Rate breakdown
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
• Provide volcanic deposit certification and purity assay; segregate from >85% batches
• Use moisture-proof packaging as crystals are hygroscopic