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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not specifically ammonium perrhenate but other rare earth salts
Other salts of oxometallic acids fall under the broader 'Other' subheading excluding ammonium perrhenate.
If impure or containing organic stabilizers exceeding 1% by weight
Mixtures or preparations not chemically defined shift to Chapter 38 as chemical preparations.
If converted to pure rhenium metal powder
Pure rhenium element classifies under inorganic chemical elements, not as ammonium salt.
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
• 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
Related Products under HTS 2841.90.20.00
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.
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.
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.