Manganese Naphthenate Fuel Stabilizer from Japan
Manganese naphthenate, a naphthenic acid salt, functions as an oxidation inhibitor in diesel and aviation fuels to prevent gum formation. HTS 3824.99.7550 covers such other water-insoluble salts used in petroleum additives. It extends fuel shelf life in storage and transport.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• ASTM testing certs required for fuel additive claims; declare concentration levels accurately
• EPA fuel additive registration mandatory; watch for anti-dumping on certain origins