Molecular Classification
Other (Inorganic compound, hydroxide)
Other Names
slaked lime, hydrated lime, slack lime, dead lime, pickling lime, caustic lime, limewater, whitewash, calcium dihydroxide, portlandite (mineral form)

Calcium hydroxide Overview

Calcium hydroxide is an inorganic compound with the formula Ca(OH)₂, commonly known as slaked lime or hydrated lime[1][2][4]. It typically appears as a white powder or colorless crystal with a crystalline, basic structure[3][5]. It is prepared by adding water to calcium oxide (quicklime) in an exothermic reaction[1][2]. Calcium hydroxide is only slightly soluble in water (forming an alkaline solution called limewater), decomposes at elevated temperatures, and readily reacts with acids, carbon dioxide, and some metals[3][4]. Its major uses are in construction (as a component of mortar and plaster), water treatment (pH adjustment, flocculation), agriculture (soil neutralization, pesticide), food processing, and as an antibacterial agent in dentistry[1][2][4][5]. Calcium hydroxide is not a biological receptor, enzyme, or therapeutic target; rather, it is an industrial and chemical agent with broad, non-targeted biological and environmental effects[2][4]. Additional context: Calcium hydroxide is a chemical compound and not a biological target (such as a receptor, enzyme, or transporter). Therefore, it does *not* fit the category of conventional drug targets. If the intent was to refer to a specific biological target related to calcium or hydroxide (e.g., calcium-sensing receptor), please clarify, as "calcium hydroxide" itself is not a therapeutic molecular target and this is an incorrect assignment for such target information[2][4].

Mechanism of Action

Biological Functions

No biological function data available

Disease Associations

No disease associations available

Safety Considerations

  • Skin and eye irritation
  • Chemical burns
  • Lung damage if inhaled
  • Risk of blindness upon exposure to eyes