RXSOL Carbon Dioxide Absorbent is High Performance Grade Absorbent. RXSOL-81-8197-025 is a versatile CO2 absorbent for removal of carbon dioxide and other acidic contaminants from gas streams. It is a specialize compound consisting primarily of hydrated lime (Ca)OH)2) with other ingredient is an active compound of mixture of hydroxides , indicator. Indicating RXSOL-81-8197-025 absorbent contains ethyl violet indicator which changes from white to violet as its capacity for absorption is exhausted.