Ammonium Perrhenate (NH4ReO4) Powder from Mexico
Ammonium perrhenate is the ammonium salt of perrhenic acid, a peroxometallic acid, classified under HTS 2841.90.20.00 as a specific salt of oxometallic or peroxometallic acids. It appears as a white crystalline powder primarily used as a precursor in rhenium metal production.
Duty Rate — Mexico → United States
3.1%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Verify purity certificate (typically >99% Re) to confirm classification as chemically defined ammonium perrhenate
• Include Material Safety Data Sheet (MSDS) due to toxicity; ensure proper hazmat labeling for air/sea shipment
• Avoid misclassification as rhenium metal (HTS 2805.30); provide assay reports showing ammonium salt form