Aqueous Paints & Varnishes Based on Synthetic Polymers

EPA VOC limits under the National Volatile Organic Compound Emission Standards apply to coatings sold in the US market regardless of origin. While VOC content does not change the HTS classification, importers must ensure products meet applicable EPA and state-level VOC standards before distribution. California's CARB rules are often more stringent than federal limits and apply to products sold in that state.

The carrier medium is the defining criterion: aqueous formulations use water as the primary solvent or dispersant, while non-aqueous formulations use organic solvents. This distinction is material at both the SITC and HTS levels, so the technical data sheet or SDS confirming the carrier system is essential supporting documentation for correct classification.