2903.61.00.00 - Methyl bromide (bromomethane)

This category specifically covers methyl bromide, also known as bromomethane. Methyl bromide is a volatile organobromine compound that has historically seen use as a fumigant and in certain specialized industrial applications. Its classification here is based on its chemical structure as a halogenated hydrocarbon, specifically a brominated derivative of an acyclic hydrocarbon.

Distinguishing methyl bromide from its siblings is crucial for accurate classification. While both fall under brominated or iodinated derivatives of acyclic hydrocarbons, this specific subheading is dedicated solely to methyl bromide. In contrast, the sibling category 2903.62.10.00 covers ethylene dibromide (1,2-dibromoethane), which has a different chemical structure and common uses. The "Other" category within this level (2903.69) would encompass any other brominated or iodinated acyclic hydrocarbons not specifically enumerated.

As this is a leaf node in the HTS classification, there are no further subcategories for methyl bromide. Therefore, the focus for classification purposes remains on definitively identifying the substance as methyl bromide based on its chemical identity and properties, ensuring it is not misclassified with similar, but distinct, brominated acyclic hydrocarbons.