Commodity Methyl Bromide Tarpaulin Fumigant from Mexico

This is a high-concentration methyl bromide mixture used for tarpaulin-covered fumigation of logs, nuts, and grain commodities, supplied in transportable steel cylinders. It is classified under tariff item 3827.40.00 because it contains methyl bromide (bromomethane), which is explicitly named in the item description. The product is a mixture, not a separate chemically defined compound, so it is not excluded by chapter note 1(a).