Phosphoric acid

phosphoricH 3 PO 4 orthophosphoric acidE338hydrogen phosphateacid spirit of phosphorusnaval jellyphosphatephosphoric acidsphosporic acid
Phosphoric acid (also known as orthophosphoric acid or phosphoric(V) acid) is a weak acid with the chemical formula H 3 PO 4.wikipedia
432 Related Articles

Phosphate

phosphatesphosphate groupinorganic phosphate
The conjugate base of phosphoric acid is the dihydrogen phosphate ion, which in turn has a conjugate base of hydrogen phosphate,, which has a conjugate base of phosphate,.
A Phosphate is a chemical derivative of phosphoric acid.

Phosphorus

PP 4 phosphoric
Phosphoric acid (also known as orthophosphoric acid or phosphoric(V) acid) is a weak acid with the chemical formula H 3 PO 4.
For this purpose, phosphate minerals are converted to phosphoric acid.

Acid

acidicacidityacids
Orthophosphoric acid is a non-toxic acid, which, when pure, is a solid at room temperature and pressure.
An inorganic example of a triprotic acid is orthophosphoric acid (H 3 PO 4 ), usually just called phosphoric acid.

Fluorapatite

fluoroapatitethree step process
: Fluoroapatite is an alternative feedstock, in which case fluoride is removed as the insoluble compound Na 2 SiF 6.
Industrially, the mineral is an important source of both phosphoric and hydrofluoric acids.

Phosphorus pentoxide

P 2 O 5 diphosphorus pentoxideP 4 O 10
It may be concentrated to produce commercial- or merchant-grade phosphoric acid, which contains about 54–62% P 2 O 5 (75–85% H 3 PO 4 ).
This white crystalline solid is the anhydride of phosphoric acid.

Conjugate acid

conjugate baseconjugateconjugate bases
The conjugate base of phosphoric acid is the dihydrogen phosphate ion, which in turn has a conjugate base of hydrogen phosphate,, which has a conjugate base of phosphate,.

Phosphogypsum

Calcium sulfate (gypsum) is produced as a by-product and is removed as phosphogypsum.

Cola

cola-flavouredclear colaDiet cola
Food-grade phosphoric acid (additive E338 ) is used to acidify foods and beverages such as various colas and jams, providing a tangy or sour taste.
Acidity is often provided by phosphoric acid, sometimes accompanied by citric or other isolated acids.

Coca-Cola

CokeCoke bottleCoca-Cola Classic
Soft drinks containing phosphoric acid, which would include Coca-Cola, are sometimes called phosphate sodas or phosphates.

Sulfuric acid

sulphuric acidsulfuricH 2 SO 4
In the wet process a phosphate-containing mineral such as calcium hydroxyapatite is treated with sulfuric acid.
The major use for sulfuric acid is in the "wet method" for the production of phosphoric acid, used for manufacture of phosphate fertilizers.

E number

E-numberEE numbers
Food-grade phosphoric acid (additive E338 ) is used to acidify foods and beverages such as various colas and jams, providing a tangy or sour taste.

Acid strength

weak acidstrong acidstrong acids
Phosphoric acid (also known as orthophosphoric acid or phosphoric(V) acid) is a weak acid with the chemical formula H 3 PO 4.
Phosphoric acid (H 3 PO 4 ) is tribasic.

Dicalcium phosphate

CaHPO 4 CaHPO 4 ·2H 2 Ocalcium hydrogen phosphate
The "di" prefix in the common name arises because the formation of the HPO 4 2– anion involves the removal of two protons from phosphoric acid, H 3 PO 4.

Monocalcium phosphate

superphosphatesuper phosphateTriple Super Phosphate
Material of relatively high purity, as required for baking, is produced by treating calcium hydroxide with phosphoric acid:

Calcium sulfate

calcium sulphateCaSO 4 Drierite
Calcium sulfate (gypsum) is produced as a by-product and is removed as phosphogypsum.

Sodium aluminium phosphate

sodium aluminum phosphateE541SAlP
These materials are prepared by combining alumina, phosphoric acid, and sodium hydroxide.

Fertilizer

fertiliserfertilizersnitrogen fertilizer
The dominant use of phosphoric acid is for fertilizers, consuming approximately 90% of production.
These minerals are converted to water-soluble phosphate salts by treatment with sulfuric (H 2 SO 4 ) or phosphoric acids (H 3 PO 4 ).

Phosphate soda

Soft drinks containing phosphoric acid, which would include Coca-Cola, are sometimes called phosphate sodas or phosphates.
Phosphoric acid is used in many bottled soft drinks, including Coca-Cola.

Phosphate conversion coating

phosphatingblack phosphatePhosphate (coating)
It serves as a conversion coating in which a dilute solution of phosphoric acid and phosphate salts is applied via spraying or immersion and chemically reacts with the surface of the part being coated to form a layer of insoluble, crystalline phosphates.

Phosphoric acid fuel cell

PAFCPAFC Fuel Cellphosphoric acid
Phosphoric acid fuel cells (PAFC) are a type of fuel cell that uses liquid phosphoric acid as an electrolyte.

Disodium phosphate

disodium hydrogen phosphateNa 2 HPO 4 Dibasic sodium phosphate
It can be generated by neutralization of phosphoric acid with sodium hydroxide:

Aluminium phosphate

aluminum phosphatealuminophosphatesI
A typical preparation of an aluminophosphate involves the hydrothermal reaction of phosphoric acid and aluminium in the form of hydroxide, an aluminium salt such as aluminium nitrate salt or alkoxide under controlled pH in the presence of organic amines.

Monosodium phosphate

Monobasic sodium phosphatesodium dihydrogen phosphateMSP
The salt is obtained by partial neutralization of phosphoric acid.

Activated carbon

activated charcoalactive carbonactive charcoal