HS Code for Formaldehyde

Formaldehyde, also known as methanal, is classified under HS code 2912.11. This code is situated within Chapter 29, which covers organic chemicals. Heading 2912 is dedicated to aldehydes, whether or not with other oxygen functions, and cyclic polymers of aldehydes. Subheading 2912.11 specifically identifies methanal as the simplest acyclic aldehyde. In its pure form, formaldehyde is a gas, but it is most commonly traded as an aqueous solution (formalin), often with a small amount of methanol added as a stabilizer to prevent polymerization. Under the rules of Chapter 29, these solutions remain classified under 2912.11 provided they do not constitute a preparation covered more specifically elsewhere. Formaldehyde is a critical precursor in the production of resins, plastics, and various chemical intermediates, making its precise classification vital for regulatory and safety compliance during international transit. It is important to distinguish 2912.11 from 2912.60 (paraformaldehyde), which is a solid polymer of formaldehyde. Additionally, if formaldehyde is mixed with other substances to create a finished disinfectant or pesticide, it may be classified under heading 3808. The purity and concentration of the formaldehyde solution are key factors in determining if it stays in Chapter 29. Importers must ensure that the Chemical Abstracts Service (CAS) number 50-00-0 is clearly associated with the product to facilitate customs clearance and safety data sheet (SDS) verification.

Products Included

• Methanal (pure formaldehyde)
• Formalin (aqueous formaldehyde solutions)
• Formaldehyde stabilized with methanol
• Gaseous formaldehyde
• Formaldehyde solutions for laboratory use

Common Misclassification

Formaldehyde is often confused with 2912.60, which is the code for paraformaldehyde (the solid polymer). It is also sometimes misclassified under 3808.94 if it is packaged and sold specifically as a disinfectant preparation rather than a raw chemical intermediate. 2912.12 (ethanal) is another common error for similar aldehydes.

FAQ

What is the HS code for formaldehyde?

The HS code for formaldehyde (methanal) is 2912.11.

Is formalin classified under the same HS code as formaldehyde?

Yes, aqueous solutions of formaldehyde, commonly known as formalin, are classified under 2912.11 as long as they are not mixed into complex preparations.