HS Code for Hexamethylenediamine

Hexamethylenediamine and its salts are classified under HS code 2921.22. This classification is situated in Chapter 29 (Organic chemicals), specifically under heading 2921, which covers amine-function compounds. Hexamethylenediamine (also known as 1,6-diaminohexane) is an acyclic polyamine. The HS code 2921.22 is a specific "named" subheading, meaning the substance is explicitly identified by its chemical name in the tariff schedule. This chemical is a vital industrial intermediate, primarily used in the production of Nylon 6,6. The classification includes not only the base chemical but also its salts, such as hexamethylenediamine adipate, which is the precursor "nylon salt" formed by reacting the diamine with adipic acid. Accurate classification is essential because this substance is often subject to specific safety regulations and industrial standards due to its corrosive nature and its role as a precursor in polymer science. When classifying this product, it is important to verify the purity and the chemical structure. While the base chemical is acyclic, it is often confused with cyclic amines or other polyamines. However, the specific carbon chain length (six carbons) and the presence of two amine groups at the ends of the chain define its classification under 2921.22. This code allows for precise tracking of the chemical's movement in the global supply chain.

Products Included

• Hexamethylenediamine (1,6-hexanediamine)
• Hexamethylenediamine adipate (Nylon salt)
• Hexamethylenediamine dihydrochloride
• Hexamethylenediamine phosphate
• Aqueous solutions of hexamethylenediamine

Common Misclassification

Hexamethylenediamine is sometimes confused with ethylenediamine, which is classified under HS code 2921.21. While both are acyclic polyamines, the carbon chain length is the distinguishing factor. Another common error is classifying the finished polymer (Nylon) under 3908, whereas the raw chemical precursor must remain in 2921.22.

FAQ

What is the HS code for Hexamethylenediamine?

The HS code for hexamethylenediamine and its salts is 2921.22.

Is hexamethylenediamine adipate classified here?

Yes, as a salt of hexamethylenediamine, the adipate version (nylon salt) is correctly classified under 2921.22.