Properties[change | change source]
Thallium(I) hydroxide is a yellow solid. It dissolves in water to make a yellow and very basic solution, similar to potassium hydroxide. It reacts with acids to make thallium salts. It breaks down to thallium(I) oxide when heated.
Preparation[change | change source]
It is made by dissolving thallium(I) oxide in water or by reacting thallium with water or moist air.