HS Code for Butadiene

Butadiene is classified under HS code 290124, which specifically covers acyclic unsaturated hydrocarbons, including buta-1,3-diene and isoprene. This classification is based on its chemical structure: it is an organic compound composed solely of hydrogen and carbon atoms (hydrocarbon), it lacks cyclic rings (acyclic), and it contains carbon-carbon double bonds (unsaturated). Buta-1,3-diene is a crucial industrial chemical, primarily used as a monomer in the production of synthetic rubbers and plastics. The specificity of this HS code highlights its importance and distinct chemical identity within the broader category of acyclic unsaturated hydrocarbons, differentiating it from other similar compounds based on its precise molecular arrangement and unsaturation.

Products Included

• Buta-1,3-diene
• 1,3-Butadiene
• Isoprene (2-methylbuta-1,3-diene)

Common Misclassification

Common misclassification can occur with HS code 290110, which covers "Acyclic hydrocarbons; saturated." The key distinction is that butadiene is an unsaturated hydrocarbon, possessing double bonds, whereas products under 290110, such as methane or ethane, contain only single bonds. Another potential area of confusion is HS 290129, which covers "Acyclic hydrocarbons; unsaturated, other than specified." While butadiene is an acyclic unsaturated hydrocarbon, it is specifically named in 290124, meaning other acyclic unsaturated hydrocarbons not explicitly listed in 290121 through 290123 or 290124 would fall under 290129. Furthermore, HS 2902 covers "Cyclic hydrocarbons," which are distinct from butadiene due to its acyclic (open-chain) structure.

FAQ

What is the HS code for Butadiene?

The HS code for Butadiene, specifically buta-1,3-diene, is 290124. This code also includes isoprene, another important acyclic unsaturated hydrocarbon.

Why is Butadiene considered an unsaturated hydrocarbon?

Butadiene is classified as an unsaturated hydrocarbon because its molecular structure contains carbon-carbon double bonds. The presence of these double bonds means that the molecule does not contain the maximum possible number of hydrogen atoms for its carbon framework, allowing for addition reactions, which is characteristic of unsaturated compounds.