Strontium Chloride is white with crystalline needles. It is odorless with a sharp, bitter taste. Soluble in water and alcohol. It is a source of strontium salts and used in pyrotechnics and electron tubes. It gives a red flame color. Strontium chloride is often used as a red colouring agent in . It imparts a much more intense red colour to the flames than most other alternatives. It is employed in small quantities in glass-making and metallurgy. The radioactive strontium-89, used for the treatment of , is usually administered in the form of strontium chloride.