Yes. Platinum, palladium, rhodium, iridium, osmium, and ruthenium compounds are precious metals and their inorganic or organic compounds fall within heading 2843, specifically under the residual subheading 284390 for compounds other than silver or gold. Colloidal forms of these metals are captured under 284310.

Silver nitrate is a strong oxidizer and requires proper hazmat classification under DOT regulations, including correct UN number labeling and shipping papers. Importers should also provide a commercial invoice specifying purity grade and intended use. Pharmaceutical-grade silver nitrate may require additional FDA documentation depending on the end application.