Pyrophosphoric acid
IUPAC name	diphosphoric acid μ-oxido-bis(dihydroxidooxidophosphorus)
Other names	diphosphoric acid
Identifiers
CAS number	[2466-09-3]
SMILES	OP(=O)(O)OP(=O)(O)O
Properties
Molecular formula	H4P2O7
Molar mass	177. IUPAC Nomenclature is a system of naming Chemical compounds and of describing the science of Chemistry in general CAS registry numbers are unique numerical identifiers for Chemical compounds Polymers biological sequences mixtures and Alloys They are also referred to A chemical formula is a way of expressing information about the Atoms that constitute a particular Chemical compound, and how the relationship between those atoms changes Molar mass, symbol M, is the Mass of one mole of a substance ( Chemical element or Chemical compound) 98 g/mol
Melting point	61 °C
Boiling point	°C
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Pyrophosphoric acid, also known under the name diphosphoric acid, is a syrupy liquid or a needle-like crystalline solid. The melting point of a solid is the temperature range at which it changes state from solid to Liquid. The boiling point of a liquid is the temperature at which the Vapor pressure of the liquid equals the environmental pressure surrounding the liquid In Chemistry, the standard state of a material is its state at 1 bar (100 Kilopascals exactly Pyrophosphoric acid is colorless, odorless, hygroscopic and is soluble in water, diethyl ether, and ethyl alcohol. Hygroscopy is the ability of a substance to attract Water Molecules from the surrounding environment through either absorption or Adsorption Water ( H2[[oxygen O]] H OH) is the most abundant Molecule on Earth 's surface composing of about 70% of the Earth's surface as Diethyl ether, also known as ether and ethoxyethane, is a clear colorless and highly Flammable liquid with a low Boiling point and a It is the anhydride of phosphoric acid and is produced from phosphoric acid by dehydration. In Chemistry, an anhydride is a compound that can be considered as derived from another compound by subtracting the molecules of water. Phosphoric acid, also known as orthophosphoric acid or phosphoric(V acid, is a mineral (inorganic acid having the Chemical formula In Chemistry, a dehydration reaction is usually defined as a chemical reaction that involves the loss of water from the reacting molecule Pyrophosphoric acid slowly hydrolyzes in the presence of water into phosphoric acid. Hydrolysis is a Chemical reaction during which one or more water molecules are split into hydrogen and hydroxide ions which may go on to participate in further reactions

2H₃PO₄ ⇌ H₄P₂O₇ + H₂O

Pyrophosphoric acid is a medium strong inorganic acid. Inorganic chemistry is the branch of Chemistry concerned with the properties and behavior of Inorganic compounds This field covers all Chemical compounds In Computer science, ACID ( Atomicity Consistency Isolation Durability) is a set of properties that guarantee that Database transactions are The anion, the salts, and the esters of pyrophosphoric acid are called pyrophosphates. An ion is an Atom or Molecule which has lost or gained one or more Valence electrons giving it a positive or negative electrical charge Salt is a Dietary mineral composed primarily of Sodium chloride that is essential for Animal life but toxic to most land plants Esters are a class of Chemical compounds and Functional groups Esters consist of an inorganic or organic Acid in which at least In Chemistry, the Anion, the Salts and the Esters of Pyrophosphoric acid are called pyrophosphates.

See also

• Sodium pyrophosphate
• Calcium pyrophosphate dihydrate deposition disease
• Dimethylallyl pyrophosphate
• ATP

References

External links

• Dissociation constants
• Pyrophosphoric acid at PubChem

Sodium pyrophosphate, also called tetrasodium pyrophosphate or tetrasodium phosphate, is a slightly Toxic and mildly irritating Colorless Calcium pyrophosphate deposition disease ( CPPD) is a rheumatologic disorder with varied clinical manifestations due to precipitation of Calcium pyrophosphate Dimethylallyl pyrophosphate (or -diphosphate (DMAPP is an intermediate product of both Mevalonic acid (MVA pathway and DOXP/ MEP pathway Adenosine-5'-triphosphate ( ATP) is a multifunctional Nucleotide that is most important as a " molecular currency" of intracellular Energy

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