Endurance Restoration Type S - Hydrated Lime Building Lime The magnesium-oxide component of dolomitic quicklime requires high pressure levels or long slaking periods to hydrate completely. Dolomitic Type S hydrated lime products are produced by adding water to quicklime in closed containers called autoclaves. The autoclave provides the high pressure needed to completely hydrate magnesium oxide. The chemistry of the reaction is as follows: CaO-MgO + 2H2O → Ca(OH)2-Mg(OH)2The hydration reaction breaks the quicklime down into fine particles of hydrated lime. The sizing of the hydrated lime is further modified by milling the product to ensure consistency. The dolomitic products created with this process are defined as Type S hydrated lime as defined by the American Society of Testing and Materials (ASTM) C206 and C207. These products are characterized by a fine particle size distribution and high surface area. This results in products that have high levels of plasticity and water retention. Type S dolomitic hydrates are useful in construction and industrial applications.Safety Data Sheet Caution: may become extremely hot when slaked (mixed with water)
