Trichlorotrifluoroethane Calibration Standard from China
Certified reference material of CFC-113 in solvent matrix for gas chromatography calibration. The pure trichlorotrifluoroethane component classifies under HTS 2903.77.00.20 as a chemically defined perhalogenated compound. Diluted forms remain classified to the active compound per Chapter 29 note (d).
Duty Rate — China → United States
16.2%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Specify concentration and matrix solvent on invoice; remains classified to CFC if meeting chapter note (d)
• Include NIST traceability certificate for laboratory standards
• Declare as 'chemical reference standard' not 'refrigerant' to avoid regulatory confusion