* Calcium hydroxide ( saturated solution known as " limewater ")

* Calcium hydroxide solution ( Ca ( OH )< sub > 2 </ sub >) ( also known as limewater ) is used to detect the presence of carbon dioxide by being bubbled through a solution.

The skin is washed with water and lime ( Calcium hydroxide ), but not together.

** Calcium hydroxide, aka slaked lime, slack lime, pickling lime or hydrated lime

At a breakage site in Rome, Testaccio, close to the Tiber, the fragments, later wetted with Calcium hydroxide ( Calce viva ), remained to create a hill now named Monte Testaccio, high and more than 1 km in circumference.

Calcium hydroxide, Ca ( OH )< sub > 2 </ sub > is sparsely soluble in water ( 1. 5 g dm < sup >- 3 </ sup > at 25 ° C.

* Calcium hydroxide, also known as " cal "

# REDIRECT Calcium hydroxide

* Calcium hydroxide, Ca ( OH )< sub > 2 </ sub > ( about 75 %)

# REDIRECT Calcium hydroxide

Calcium phosphate is the name given to a family of minerals containing calcium ions ( Ca < sup > 2 +</ sup >) together with orthophosphates ( PO < sub > 4 </ sub >< sup > 3 -</ sup >), metaphosphates or pyrophosphates ( P < sub > 2 </ sub > O < sub > 7 </ sub >< sup > 4 -</ sup >) and occasionally hydrogen or hydroxide ions.

# REDIRECT Calcium hydroxide

Calcium oxide ( lime ) is reacted with water to regenerate the calcium hydroxide used in Reaction 2:

Calcium hydroxide is caustic in the presence of water, and is very irritating to the nasal passages, so it is desirable to allow any left over calcium hydroxide to convert to calcium carbonate.

Calcium, alkalinity and other trace elements which are consumed by corals are replaced through water changes ( using natural seawater or a quality synthetic salt mix ) or the use of a calcium reactor, kalkwasser ( calcium water-calcium hydroxide mixed with pure water ) or a balanced two-part solution.

* Calcium hydroxide Ca ( OH )< sub > 2 </ sub >

Calcium ( from Latin, genitive calcis, meaning " lime ") was known as early as the first century when the Ancient Romans prepared lime as calcium oxide.

* Calcium carbonate ( CaCO < sub > 3 </ sub >) is used in manufacturing cement and mortar, lime, limestone ( usually used in the steel industry ) and aids in production in the glass industry.

Calcium oxide, in the form of lime, was often used for this purpose, since it could react with the carbon dioxide and sulfur dioxide produced during roasting and smelting to keep them out of the working environment.

** Calcium oxide, aka burnt lime or quicklime

* Calcium nitrate (" Norway salpeter ", " Norges salpeter " or " nitrate of lime "), a compound produced in Norway by the Birkeland – Eyde process during early 20th century

*; Calcium hypochlorite: Used by Semmelweis, as " chlorinated lime ", in his revolutionary efforts against childbed fever.

Calcium deficiency can sometimes be rectified by adding agricultural lime to acid soils, aiming at a pH of 6. 5, unless the subject plants specifically prefer acidic soil.

Calcium and Magnesium will be lacking in coir potting mixes, so a naturally good source of these nutrients is dolomitic lime which contains both.

** Calcium oxide, sometimes called caustic lime

Calcium carbonate precipitates from the white liquor and is recovered and heated in a lime kiln where it is converted to calcium oxide ( lime ).

Calcium reacts in the kiln with the clay minerals to produce silicates that enable the lime to set without exposure to air.

Calcium ( ) is the chemical element with symbol Ca and atomic number 20.

Calcium is a soft gray alkaline earth metal, and is the fifth-most-abundant element by mass in the Earth's crust.

Calcium is also the fifth-most-abundant dissolved ion in seawater by both molarity and mass, after sodium, chloride, magnesium, and sulfate.

Calcium is essential for living organisms, in particular in cell physiology, where movement of the calcium ion Ca < sup > 2 +</ sup > into and out of the cytoplasm functions as a signal for many cellular processes.

Calcium, with a density of 1. 55 g / cm < sup > 3 </ sup >, is the lightest of the alkaline earth metals ; magnesium ( specific gravity 1. 74 ) and beryllium ( 1. 84 ) are more dense, although lighter in atomic mass.

Calcium has a higher electrical resistivity than copper or aluminium, yet weight-for-weight, due to its much lower density, it is a rather better conductor than either.

Calcium is the fifth-most-abundant element by mass in the human body, where it is a common cellular ionic messenger with many functions, and serves also as a structural element in bone.

Calcium, combined with phosphate to form hydroxylapatite, is the mineral portion of human and animal bones and teeth.

Calcium carbonate ( CaCO < sub > 3 </ sub >) is one of the common compounds of calcium.

Calcium is not naturally found in its elemental state.

Calcium is used

* Calcium arsenate ( Ca < sub > 3 </ sub >( AsO < sub > 4 </ sub >)< sub > 2 </ sub >) is used in insecticides.

* Calcium carbide ( CaC < sub > 2 </ sub >) is used to make acetylene gas ( for use in acetylene torches for welding ) and in the manufacturing of plastics.

* Calcium chloride ( CaCl < sub > 2 </ sub >) is used in ice removal and dust control on dirt roads, in conditioner for concrete, as an additive in canned tomatoes, and to provide body for automobile tires.

* Calcium cyclamate ( Ca ( C < sub > 6 </ sub > H < sub > 11 </ sub > NHSO < sub > 3 </ sub >)< sub > 2 </ sub >) was used as a sweetening agent but is no longer permitted for use because of suspected cancer-causing properties.

* Calcium gluconate ( Ca ( C < sub > 6 </ sub > H < sub > 11 </ sub > O < sub > 7 </ sub >)< sub > 2 </ sub >) is used as a food additive and in vitamin pills.

* Calcium hypochlorite ( Ca ( OCl )< sub > 2 </ sub >) is used as a swimming pool disinfectant, as a bleaching agent, as an ingredient in deodorant, and in algaecide and fungicide.

* Calcium permanganate ( Ca ( MnO < sub > 4 </ sub >)< sub > 2 </ sub >) is used in liquid rocket propellant, textile production, as a water sterilizing agent and in dental procedures.

* Calcium phosphate ( Ca < sub > 3 </ sub >( PO < sub > 4 </ sub >)< sub > 2 </ sub >) is used as a supplement for animal feed, fertilizer, in commercial production for dough and yeast products, in the manufacture of glass, and in dental products.