Liquid Oxygen LOX
Liquid oxygen (LOX) is oxygen in cryogenic liquid form at -183°C, used for rocket propulsion, medical cryotherapy, and industrial freezing. It remains classified under tariff item 2804.40.00 as elemental oxygen, regardless of physical state.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Handle liquid oxygen under strict safety protocols and provide a certificate of analysis showing purity
• The cryogenic container is classified separately, so declare the gas and container separately
• Verify any Canadian transport permits for cryogenic liquids
Related Products under Tariff item 2804.40.00
Aviation Breathing Oxygen
Aviation breathing oxygen is high-purity oxygen gas conforming to military specifications, used in aircraft emergency oxygen systems and pilot breathing masks. It is classified under tariff item 2804.40.00 as elemental oxygen, not as an aircraft part or accessory.
High-Purity Research Oxygen-18 Isotope
High-purity research oxygen-18 isotope gas is a stable isotope of oxygen used in PET imaging tracers and metabolic research. It falls under tariff item 2804.40.00 as elemental oxygen, since stable isotopes of nonmetals are classified in Chapter 28.
Hyperbaric Oxygen Therapy Gas
Hyperbaric oxygen therapy gas is ultra-pure oxygen (>99.99%) used in hyperbaric chambers for treating decompression sickness and wound healing. It is classified under tariff item 2804.40.00 as elemental oxygen, regardless of its medical application.
Industrial Compressed Oxygen Gas
Industrial compressed oxygen gas is pure elemental oxygen compressed for welding, cutting, and metal fabrication. It is classified under tariff item 2804.40.00 as a separate chemically defined element, distinct from mixtures or compounds.
Medical Grade Oxygen USP
Medical grade oxygen USP is high-purity oxygen meeting United States Pharmacopeia standards for respiratory therapy and anesthesia. It is classified under tariff item 2804.40.00 as elemental oxygen, a nonmetal gas, in its chemically defined form.
Welding Oxygen CGA 346 Cylinder
Welding oxygen in CGA 346 cylinders is standard welding-grade oxygen for oxy-acetylene and oxy-fuel applications. It is classified as pure oxygen under tariff item 2804.40.00; the cylinder is packaging and classified separately.