Isopropyl [O-2-(Methylpropylamino)ethyl] Hydrogen Isopropylphosphonite from Germany
Complex phosphonite with mixed isopropyl/methylpropyl amino substituents, classified in HTS 2931.49.00.08 for its non-halogenated organo-phosphorus aminoethyl structure. Applied in fine chemical synthesis and agrochemical intermediates.
Duty Rate — Germany → United States
15%
Rate breakdown
9903.04.6211.3%Pharmaceuticals: patented pharma from JP/EU/KR/CH/LI — 15% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Customs requires CAS number if assigned; generic phosphonites often lack them—use IUPAC name instead
• Test for phosphorous content to distinguish from sulfonated derivatives excluded from heading 2931
• For R&D imports, use temporary entries under 9813.00.05 to defer duties during testing