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

* 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.

* Calcium phosphate

Calcium is required to buffer the excess phosphate when it enters the cells.

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.

Calcium phosphate is the principal form of calcium found in bovine milk.

Calcium phosphate is used in baking as a raising agent, with E number E341.

* Calcium dihydrogen phosphate, E341 ( i ): Ca ( H < sub > 2 </ sub > PO < sub > 4 </ sub >)< sub > 2 </ sub >

* Calcium hydrogen phosphate, E341 ( ii ): CaHPO < sub > 4 </ sub >

: A12AA01 Calcium phosphate

* Calcium phosphate storage.

** Calcium phosphate

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 hydroxide ( slaked lime ) is used in many chemical refinery processes and is made by heating limestone at high temperature ( above 825 ° C ) and then carefully adding water to it.

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 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 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.

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

* Calcium carbonate ( Limestone or chalk ) decomposes into calcium oxide and carbon dioxide when heated:

Calcium to phosphorus ratios should be 2: 1 to prevent hypocalcemia, sometimes known as hind leg paralysis ( HLP ).

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.

* Marshmallows ( Sugar, Modified Corn Starch, Corn Syrup, Dextrose, Gelatin, Calcium Carbonate, Yellow 5 & 6, Blue 1, Red 40 )

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

in other words, each 1 g / dL decrease of albumin will decrease 0. 8 mg / dL in measured serum Ca and thus 0. 8 must be added to the measured Calcium to get a corrected Calcium value.

* Wax Nails ( 1 Get Your Calcium, 2 Cereal Killer, 3 Seed, 4 The Crawling Backward Man, 5 In Good Hands, 6 How's Your House?

Carbonated water, High fructose corn syrup and / or Sugar, Citric acid, natural and artificial flavors, Phosphoric acid, Potassium citrate, Potassium benzoate and Potassium sorbate ( to preserve freshness ), Caffeine, Gum arabic, Ascorbic acid and Calcium disodium EDTA ( to protect flavor ), blue 1, red 40.