Hydrogen Cyanide Gas (99% Purity) from Japan
Hydrogen cyanide (HCN) is a highly toxic, colorless gas or volatile liquid used primarily in chemical synthesis for producing adiponitrile and methionine. It falls under HTS 2811.12.00.00 as it is explicitly listed as hydrocyanic acid, a simple cyanogen acid per Chapter 28 Note 2(a). This chemically defined inorganic compound is supplied in pressurized cylinders for industrial applications.
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
• Obtain EPA TSCA registration and DOT hazardous material shipping certification prior to import
• Provide detailed safety data sheets (SDS) and proof of neutralization capabilities at destination
• Avoid common pitfalls like inadequate UN-approved cylinder labeling which can lead to shipment rejection