Compressed Air Cylinders
High-pressure compressed atmospheric air in DOT cylinders for pneumatic tools. Explicitly covered by HTS 2853.90.90 as 'compressed air'. Mixture retaining natural gas composition.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If oxygen-enriched for medical/breathing air
Pure or enriched oxygen/nitrogen in 2804; standard air mixture in 2853.
If pre-filled in complete ozone meters
Instruments with compressed air charges classify by function in 9026.
If put up in fire-extinguisher charges
Chapter 28 Note 2(e) excludes fire-extinguisher preparations to 3813.
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Import Tips & Compliance
• DOT 3AA/3AL cylinder recertification; UN1002 markings
• Specify <1% hydrocarbons to confirm not SCUBA mix (2804)
• Pressure test certificates mandatory for customs
Related Products under HTS 2853.90.90
Copper Phosphide (Phosphor Copper)
Copper phosphide, containing more than 15% phosphorus by weight, used in metallurgy for deoxidizing and alloying. Classified under HTS 2853.90.90 as per Chapter Note 7, which explicitly includes it in heading 2853. It is an inorganic compound of phosphorus and copper, not chemically excluded.
Zinc Phosphide Powder
Chemically defined zinc phosphide (Zn3P2) used as rodenticide active ingredient or in semiconductors. Falls under HTS 2853.90.90 as other phosphides, inorganic compounds per heading scope excluding ferrophosphorous. Highly reactive with moisture, producing phosphine gas.
Aluminum Phosphide Tablets
Tableted aluminum phosphide (AlP) for fumigation, generating phosphine gas. Classified in 2853.90.90 as chemically defined phosphide, inorganic compound under heading 2853. Excludes only ferrophosphorous per hierarchy.
Distilled Water USP Grade
Ultra-pure distilled water meeting USP standards for pharmaceutical use. HTS 2853.90.90 covers 'distilled or conductivity water and water of similar purity' explicitly. Free of ions, used in injections and labs.
Liquid Air (Synthetic)
Liquefied atmospheric air, rare gases not removed, used for cryogenic cooling. Falls under HTS 2853.90.90 as 'liquid air (whether or not rare gases have been removed)'. Inorganic compressed/liquefied gas mixture.
Dental Amalgam Alloy
Silver-tin-mercury amalgam powder for dental fillings, excluding precious metal amalgams. HTS 2853.90.90 includes 'amalgams, other than amalgams of precious metals'. Chemically defined alloy for restorative dentistry.