Magnesium Tungstate from Canada
Magnesium tungstate (MgWO4) is a crystalline salt employed in scintillation detectors and phosphors, classified as other tungstates in HTS 2841.80.0050. It is a simple oxometallic salt excluded from other chapters.
Duty Rate — Canada → United States
5.5%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Provide crystallographic data if challenged on 'chemically defined' status
• Separate from magnesium oxide mixtures (excluded to Section V)
• Document non-fire-extinguisher use to stay out of 3813