Greek Caustic Calcined Magnesite Lumps from Mexico
Lump form caustic calcined magnesite from Grecian deposits, partially calcined for steelmaking slag conditioning. HTS 2519.90.20.00 applies as it's 'other' magnesium oxide from natural magnesite via caustic process, not fused or fully sintered.
Duty Rate — Mexico → United States
0%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Include quarry origin certificates; Grecian magnesite has specific purity profiles CBP recognizes
• Declare particle size distribution; lumps >2cm vs powder affects handling but not classification
• Monitor silica content; >5% may trigger alternative classification scrutiny