Tetramethylammonium iodide (CAS No.: 75-58-1) is a quaternary ammonium salt compound with the chemical formula C₄H₁₂IN and a molecular weight of 201.05.

Basic Information

Chinese Synonyms: Tetramethylammonium iodide, Tetramethylammonium iodide, Tetramethylammonium iodide

Appearance: White to pale yellow crystalline or powdery solid at room temperature

Density: Approximately 1.84 g/cm³

Melting Point: >300°C (some sources state 230°C, but most authoritative sources support a temperature higher than 300°C)

Water Solubility: Slightly soluble in water, readily soluble in ethanol, insoluble in ether and chloroform

Stability: Photosensitive and hygroscopic; requires sealing, protection from light, and storage in a cool, dry place.