[1] Cyhexatin is stable in aqueous suspensions in neutral and alkaline conditions (pH above 6), but reacts exothermically with strong acids, acting as a base, to form salts.[which?]

Decomposes upon exposure to ultraviolet light to dicyclohexyltin oxide (C6H11)2SnO (which is not an analog of ketones R2C=O because it exists as a polymer) and cyclohexylstannanoic acid (C6H11)SnO2H.

Upon heating above 120 °C (248 °F) it decomposes to bis(tricyclohexyltin) oxide ((C6H11)3Sn)2O, emitting irritating and toxic fumes and acrid smoke.

Some components of those fumes are oxidizers, thus, they can cause combustible materials to ignite, like wood, oil, some plastics, paper and clothes.

Inhalation of its fumes causes irritation of the respiratory system, coughing, headache, dizziness and sore throat.