94% Purity Liquefied Butane for Calibration Gas from China
Liquefied butane at 94% purity formulated for calibration of gas analyzers and laboratory equipment, with certified impurities. Classified precisely under HTS 2711.13.00.10 for its sub-95% butane content as a liquefied hydrocarbon gas. Not for combustion use.
Duty Rate — China → United States
25%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Include NIST-traceable certificates of analysis for purity claims
• Label cylinders with UN1950 for LPG; follow PHMSA pipeline safety rules
• Avoid retail packaging confusion; bulk industrial exempt from some consumer labels