Ammonium Perrhenate Catalyst Precursor Flakes
Flake-form ammonium perrhenate designed for conversion to Re2O7 in catalyst manufacturing for hydrocracking. Its chemical definition as NH4ReO4 places it squarely under HTS 2841.90.20.00.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If other perrhenates like potassium perrhenate
Only ammonium perrhenate has dedicated subheading; others are 'Other'.
If misidentified as molybdate instead of rhenate
Similar chemistry but different metal; molybdates/phosphomolybdates in 2835.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Specify physical form (powder/flakes) in commercial invoice to match statistical suffix
• Ensure packaging prevents moisture absorption which affects decomposition
• Pre-clear with CBP if first import; rhenium compounds receive heightened scrutiny
Related Products under HTS 2841.90.20.00
Ammonium Perrhenate (NH4ReO4) Powder
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.
High-Purity Ammonium Perrhenate for Superalloy Production
This high-purity grade (>99.99% Re) ammonium perrhenate serves as the key raw material for producing rhenium powder used in nickel-based superalloys for turbine blades. It falls under HTS 2841.90.20.00 due to its specific chemical definition as the ammonium salt of perrhenic acid.
Technical Grade Ammonium Perrhenate 99.5% Re
Technical grade ammonium perrhenate with 99.5% rhenium content is used in petroleum reforming catalysts and alloy production. Classified specifically under HTS 2841.90.20.00 as the ammonium salt within salts of oxo- or peroxometallic acids.
Research Grade Ammonium Perrhenate 99.99% Pure
Ultra-high purity ammonium perrhenate for scientific research and rhenium thin film deposition. Meets Chapter 28 Note 1 criteria for chemically defined compounds, thus HTS 2841.90.20.00.