n-Pentane Calibration Standard
Certified reference n-pentane at 1000 ppm in solvent for gas chromatography calibration of hydrocarbon analyzers. The pure base compound is diluted in a solvent, which per Chapter 29 note 1(d) allows classification as a solution of a chemically defined product.
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 |
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 the calibration standard is put up as a set or kit for retail sale
Certified reference materials for laboratory use may fall under heading 38.22 if they are presented as diagnostic or laboratory reagents.
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
• Confirm that the solvent dilution is a normal and necessary method for transport or safety, and that the solvent does not make the product suitable for a specific use
• Provide documentation showing the concentration and intended use as a calibration standard
• Be aware that if the solution is put up for retail sale, other headings may apply
Related Products under Tariff item 2901.10.00
2,2,4-Trimethylpentane (Isooctane)
Isooctane, or 2,2,4-trimethylpentane, is a highly branched saturated acyclic C8 hydrocarbon used as a gasoline octane booster and reference fuel. It falls under tariff item 2901.10.00 as a saturated acyclic hydrocarbon.
2,2-Dimethylbutane (Petroleum Derived)
2,2-Dimethylbutane (neohexane), a highly branched C6 saturated acyclic hydrocarbon from petroleum cracking. It is classifiable under tariff item 2901.10.00 as a saturated acyclic hydrocarbon, used in specialty solvents and fuel additives.
Butane Reference Fuel RM-1
Butane Reference Fuel RM-1 is a certified reference blend of iso-butane and n-butane used for automotive engine testing. As a saturated acyclic hydrocarbon mixture, it falls under tariff item 2901.10.00, which covers saturated acyclic hydrocarbons. The product is supplied in pressure cylinders with NIST traceability, ensuring high purity and reliability for testing applications.
Commercial n-Heptane (C7H16)
n-Heptane is a straight-chain saturated acyclic hydrocarbon used as a standard reference fuel and solvent in chromatography and coatings. It qualifies for tariff item 2901.10.00 as a chemically defined C7 saturated acyclic hydrocarbon.
Cyclohexane (Petroleum Derived)
Cyclohexane is a saturated cyclic hydrocarbon derived from benzene hydrogenation using petroleum-based feedstocks. Although cyclic, it is classifiable under tariff item 2901.10.00 as a saturated hydrocarbon, per the chapter's scope.
Ethane Calibration Standard 10 ppm
Ethane Calibration Standard is a gas mixture containing 10 ppm ethane in nitrogen, used for gas chromatography calibration. While the principal component is ethane, a saturated acyclic hydrocarbon, the presence of nitrogen as a balance gas may affect classification. Under Chapter 29, only products dissolved in water or specific solvents are covered, so this mixture may not qualify as a pure chemical compound.