Pyrophosphoric acid

 

 

Appearance:

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

 

Application:

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 process.it 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.

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