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Chemical database: Calcium hydroxide

chemistry tutorials - calcium hydroxide

Chemical formula Ca(OH)2
Molar mass 74.09 g mol -1
Density 2.21 g cm -3
Melting point decomposition (~ 550 °C)
Boiling point -
Solubility 0.17 g in 100 mL H2O (20 °C)
CAS number 1305-62-0
Hazards chemistry tutorials - calcium hydroxide - additional data: (R:37/38-41)(S:26-39)

Calcium hydroxide, also known as slaked lime, is a common inorganic compound that comes in form of a white powder. This compound has many uses - it is used as a flocculant in water treatment, as a common chemical reagent, as an ingredient in the production of various construction materials, as a supplement, in metallurgy and in various other branches of industry.

Calcium hydroxide (slaked lime) can be found in large bags or buckets at stores that sell construction materials and equipment. It can also be obtained by a reaction of calcium oxide with water, which also produces a lot of heat. Alternatively, if higher purity is desired, it can be produced by mixing aqueous solutions of calcium chloride and sodium hydroxide, or ordered from chemical selling companies.


  Acetic acid
  Acetylsalicylic acid
  Ammonium nitrate
  Calcium carbide
  Calcium carbonate
  Calcium hydroxide
  Calcium oxide
  Hydrochloric acid
  Hydrogen peroxide
  Iron(III) oxide
  Lithium carbonate
  Methyl ethyl ketone
  Nitric acid
  Potassium carbonate
  Potassium chlorate
  Potassium chloride
  Potassium metabisulphite
  Potassium nitrate
  Potassium permanganate
  Sodium acetate
  Sodium benzoate
  Sodium bicarbonate
  Sodium bromide
  Sodium carbonate
  Sodium chloride
  Sodium hydroxide
  Sodium hypochlorite
  Sulphuric acid
  Trichloroisocyanuric acid