Tributyltin Chloride Stabilizer from Canada
Tributyltin chloride is an organotin compound used as a PVC stabilizer and biocide. Falls under 2931.90.90.52 as an organo-inorganic compound with tin-carbon bonds, distinguished from sulfonated derivatives.
Duty Rate — Canada → United States
100%
Rate breakdown
9903.04.6096.3%Pharmaceuticals Annex IV: patented pharma articles — 100% 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
• TBT compounds restricted under Aquatic Nuisance Species Act; require EPA TSCA approval
• Include butyltin speciation analysis to confirm structure
• Hazardous waste manifest required for >1000 lb shipments