Diethylphosphinic Acid from Germany
Diethylphosphinic acid is an organophosphorus compound used as flame retardant in polymers. Classified in 2931.90.90.52 as organo-inorganic acid-function compound not covered by earlier P-specific headings.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Corrosive solid UN 3261; use fiber drums with polyethylene liner
• Flame retardant claims require UL certification for end-use validation
• Distinguish from phosphonic acids (2929.90) via P-C vs P-OH bonding