Safety Statements: A poison by ingestion and intraperitoneal routes. Moderately toxic by skin contact. Thermally unstable and decomposition may be vigorous. When heated to decomposition it emits very toxic fumes of Hg, NOx, SOx, and CN−. See also MERCURY COMPOUNDS, INORGANIC; MERCURY COMPOUNDS, ORGANIC and CYANATES.
Hazard Symbols: Highly toxic by ingestion, inhalation, and skin absorption. TLV: TWA 0.1 mg(Hg)/m3.