What is Calcium Hydroxide

Calcium hydroxide is an inorganic compound with the chemical formula Ca (OH)₂. It is a colorless crystal or white powder and is produced when quicklime is mixed or slaked with water. It has many names including hydrated lime, caustic lime, builders' lime, slack lime, cal, or pickling lime.

  • Synonyms: Calcium Hydroxide, Hydrated Lime, Lime, Lime Slaked, Slaked Lime
  • INCI: Calcium Hydroxide
  • Chemical formula: Ca (OH)2
  • CAS #: 1305-62-0
  • Hazard: • H315 - Causes skin irritation • H319 - Causes serious eye irritation • H335 - May causes respiratory irritation


Use the links below to view all package sizes for these specific products:

Calcium Hydroxide CA(OH)2 Standard Hydrated Lime
VITACAL® H Food Codex Grade Calcium Hydroxide
Lime Hydrated


AppearanceSoft White Powder
OdorFaint Musty Earthy Odor
SolubilitiesWater Soluble
Boiling point5,162°F (2,850°C)
Freezing point1,076°F (580°C)
Molecular weight74.093 g/mol
Weight per gallon19.1751 lb/gal
ClassAlkali, Lime, Reducing Agent
GradesIndustrial, ACS, USP


Calcium Hydroxide uses include acid neutralizer, buffer, food processing, fritos, neutralizing agent, reducing agent, sugar refining

  • Food and Nutrition: It is used in the pickling lime for home canning
  • Personal Care: It is used in the formulation of bath products, cleansing products, fragrances, foot powders, hair dyes and colors, makeup, nail products, personal cleanliness products, shampoos, shaving products, depilatories, skin care products o
  • Leather Production: It is used in leather tanning to remove hair from hides.
  • Paper Industry: It is used in pulp/PCC manufacturing applications.


Calcium Hydroxide known as slaked lime, caustic lime, slack lime, and pickling lime, calcium hydroxide is an inorganic compound commonly used in food production and various industrial applications. Calcium hydroxide features a colorless crystal or white powder form and is produced by combining calcium oxide with water. In a laboratory setting, calcium hydroxide is created by mixing calcium chloride with sodium hydroxide.

Brenntag North America is a top calcium hydroxide distributor. We’re proud to be a global market leader in the distribution of high-quality ingredients and chemicals that meet our customers’ unique requirements.

If you know where to get top-quality calcium hydroxide products for your U.S.-based company, Brenntag can help. With an expansive inventory consisting of more than 10,000 chemicals and ingredients, we’re sure to have the right product for your needs. We’re also known for our unparalleled expertise, attentive customer service and commitment to forming lasting partnerships with our customers. Contact us for additional product and pricing information today.

Calcium Hydroxide is available in metal drums, bags, tank trucks in variable quantities.

You can download a copy of the SDS for Calcium Hydroxide from Brenntag Connect.

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