HS Code for Trimethylamine

Trimethylamine is classified under HS code 2921.11. This classification falls within Chapter 29 for organic chemicals, specifically under the section for amine-function compounds. The code 2921.11 is a specific subheading that covers methylamine, dimethylamine, and trimethylamine, as well as their salts. The classification is determined by the chemical structure of the molecule (CH3)3N, which is an acyclic monoamine. Whether the substance is in its pure gaseous form, a compressed liquefied gas, or an aqueous solution, it remains under this heading as long as it is not mixed with other ingredients that would transform it into a prepared chemical product or a medicament. The salts of trimethylamine, such as its hydrochloride form, are also explicitly included in this subheading per the HS nomenclature.

Products Included

• Pure trimethylamine gas
• Trimethylamine in aqueous solution
• Trimethylamine hydrochloride
• Anhydrous trimethylamine
• Liquefied trimethylamine under pressure

Common Misclassification

Trimethylamine is sometimes misclassified under HS code 2921.19, which is the residual category for "other" acyclic monoamines. However, because trimethylamine is specifically named in the 2921.11 subheading, the specific code must take precedence over the general one. Another error involves classifying aqueous solutions under Chapter 38 (Miscellaneous chemical products), but Chapter 29 Note 1(f) allows for chemicals dissolved in water to remain in Chapter 29.

FAQ

What is the HS code for Trimethylamine?

The specific HS code for trimethylamine and its salts is 2921.11.

Does the HS code change if it is in a water solution?

No, trimethylamine dissolved in water remains under HS code 2921.11, as Chapter 29 permits substances dissolved in water to retain their classification as pure chemicals.