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A form of lime, in water and sewage treatment and improvement of acid soils

An ingredient in whitewash, mortar, and plaster

An alkali used as a lye substitute in no-lye hair relaxers

A reagent

In the reef aquarium hobby for adding bio-available calcium in solution for calcium-using animals such as algae, snails, hard tube worms, and corals (often referred to as Kalkwasser mix)

In the tanning industry for neutralization of extra acid

In the petroleum refining industry for the manufacture of additives to oils (alkilsalicatic, sulphatic, fenatic)

In the chemical industry for manufacture of calcium stearate

In the food industry for processing water (for alcoholic and soft drinks)

For clearing a brine of carbonates of calcium and magnesium in the manufacture of salt for food and pharmacopoeia

In Native American and Latin American cooking, calcium hydroxide is called "cal." Corn cooked with cal becomes nixtamal, which is considered tastier and easier to digest.

A filler

In the petrochemical industry for manufacturing solid oil of various marks

In the manufacture of brake pads

In the manufacture of ebonite

For preparation of dry mixes for painting and decorating

In manufacturing mixes for pesticides

In manufacturing a drug called "Polikar" for fighting decay (due to fungus) of fruits and vegetables during storage

A paste used to fill the inside of a tooth during a root canal procedure, left in for a period of weeks, to disinfect and reduce inflammation in surrounding material.*

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Difficulty in breathing

Internal bleeding

Hypotension

Skeletal muscle paralysis, interferance with actin-myosin system.

An increase in blood pH, which is damaging to the internal organs.