Product Detail

Pyrophosphoric acid




Pyrophosphoric acid is a colorless and viscous crystallized into colorless glassy if put it for a long time.



Pyrophosphate has highly ligancy,usually use it to analytical reagent ,such as masking agent to get organophosphate ester.It is used in pharmaceutical as a solvent .

It can be used to adjust PH value on the electroplating solution on the plating also can be treat as catalyst,stabilizer on the organic peroxide and metal refining.


Product index:


English name Pyrophosphoric acid density ((25℃ g/cm3) 2.04
formula H4P2O7 molar refractivity 23.68
molecular weight 177.98 molar volume(m3/mol) 732.2
CAS# 2466-09-3 parachor(90.2K) 262.9
melting point 61℃ safety description S26 S36 S36/S37/S39
solubility soluble in water danger symbol corrosivity


Feature and stability:

solid crystalline pyrophosphoric acid has strong hygroscopic,it can soluble in water,ethanol and ether.The water solution has highly acidic and corrosivity.general crystal Ⅰtype pyrophosphate melting point is 54.3℃,but after a few hours of heating in a sealed tube at around 50℃,,it will become Ⅱ type pyrophosphate ,the melting point will become 71.5℃,the stability will be better on room-temperature.


contact us.

Contact Us


+86-578-8505507, +86-578-8505501

Foreign trade hot line: +86-15957803889

Address: No.9 Shimen Road, Shangjiang Block, Industrial Park, Suichang County, Lishui City, Zhejiang Province, China

Fax: +86-578-8505508