2,2,3,3-Tetrachlorocyclobutanone from Germany
Despite ketone functionality, 2,2,3,3-tetrachlorocyclobutanone classifies primarily by halogenation under HTS 2903.89.70. The cyclobutane ring with geminal dichlorides defines it as halogenated cyclanic derivative. Chapter notes prioritize halogenation over minor oxygen functions.
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
• Include carbonyl stretch IR data to document oxygen function without reclassification
• Store below 0°C to prevent ring expansion rearrangement
• Label as Eye Irritant Category 2A per GHS standards