2931.90.90.30 - 2-Chlorovinyldichloroarsine

This classification covers specific organo-inorganic compounds that do not fall into more precisely defined categories within Heading 2931. The defining characteristic of 2-Chlorovinyldichloroarsine is the presence of an arsenic atom directly bonded to organic groups, in this case, a 2-chlorovinyl group, alongside chlorine atoms. These compounds are typically utilized for their reactivity in synthesis or as specialized chemical intermediates.

Within the "Other organo-inorganic compounds" group, this subcategory, 2931.90.90.30, is specifically for 2-Chlorovinyldichloroarsine. It is differentiated from sibling categories such as Organo-silicon compounds (2931.90.90.10) and Organo-tin compounds by the fundamental elemental composition, focusing on arsenic-based organometallic structures. It is also distinct from Bis(2-chlorovinyl)chloroarsine (2931.90.90.35) and Tris(2-chlorovinyl)arsine (2931.90.90.40) by the specific number and arrangement of the chlorovinyl and chlorine substituents on the arsenic atom.

As this node represents a leaf category, there are no further subcategories. Therefore, the classification hinges on accurately identifying the compound as 2-Chlorovinyldichloroarsine based on its chemical structure and ensuring it does not meet the criteria for any of the more specifically named sibling categories within the "Other" designations of Heading 2931. The primary classification criterion is the precise chemical identity of the substance.