Calcium Nitrite Corrosion Inhibitor from Japan
Calcium nitrite (Ca(NO2)2) solution or powder acts as a corrosion inhibitor for reinforced concrete, preventing steel rebar rust. It is classified in HTS 2834.10.5000 as an 'other' inorganic nitrite, chemically pure and not excluded as a Chapter 31 product or organo-compound. Primarily used in construction chemicals.
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
• Include end-use statements for construction to differentiate from fertilizers; test for heavy metal impurities
• Ensure packaging prevents moisture absorption that could affect classification purity
• Comply with EPA regulations on nitrite discharge if applicable