3824.92.00.00/Polyglycol Ester of Methylphosphonic Acid Flame Retardant/Japan

Polyglycol Ester of Methylphosphonic Acid Flame Retardant from Japan

This is a specific polyglycol ester of methylphosphonic acid used as a flame retardant additive in polyurethane foams and plastics. It falls under HTS 3824.92.00.00 because it is explicitly classified as polyglycol esters of methylphosphonic acid, a chemical preparation not elsewhere specified. These compounds provide fire resistance by releasing non-flammable gases when exposed to heat.

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

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Import Tips

• Verify chemical composition via lab analysis to confirm it meets the exact definition of polyglycol esters of methylphosphonic acid

• Include Safety Data Sheets (SDS) and TSCA certification for US EPA compliance, as these are regulated flame retardants

• Avoid misclassification as generic plastic additives under 3824.99; specify phosphonate structure in invoices