Periclase Magnesium Oxide Crystals from Japan
Natural periclase crystals, consisting of nearly pure magnesium oxide, used in research and refractories. Classified in HTS 2519.90.50.00 as other magnesium oxide, whether or not pure, from mineral sources.
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 geological origin certification to prove natural periclase vs. synthetic
• Declare crystal size/weight; large crystals over 2.5g may need Chapter 71 review if gem-like
• Avoid 'optical element' descriptions per Chapter 25 exclusions for Chapter 90