Sudan Chemical is a world-famous manufacturer, supplier, and exporter of Hold Solution chemicals. Our RXSOL-22-2207-025 Calcium Hydroxide is an inorganic compound with the chemical formula Ca(OH)₂. It is a colorless crystal or white powder and is obtained when calcium oxide is mixed, or slaked with water. commonly used for sewage treatment, paper production, construction, and food processing. It also has medical and dental uses.