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Sodium pyrophosphate CAS 7758-16-9

Chemical Name: Sodium pyrophosphate

CAS No.: 7758-16-9

Appearance: White powder




Quick Details

Chemical Name: Sodium pyrophosphate
CAS No.: 7758-16-9
Molecular Fomula: H5NaO7P2

Chemical Structure:Sodium pyrophosphate

Molecular weight: 201.97

Appearance: White powder


Typical Properties

Melting point decomposes 220℃ [MER06]
density (hexahydrate) 1.86
vapor pressure 0Pa at 20℃
storage temp. -70°C
solubility H2O: 0.1 M at 20 °C, clear, colorless
form white powder
color White to Off-White
PH 3.5-4.5 (20℃, 0.1M in H2O, freshly prepared)
Water Solubility Fully miscible in water. Insoluble in alcohol and ammonia.
λmax λ: 260 nm Amax: 0.11
λ: 280 nm Amax: 0.09
Merck 13,8643
Stability: Stable.


Sodium Pyrophosphate Dibasic is anhydrous form, pyrophosphate salt used in buffers.

Packaging and Shipping 

Drum, 25kg


Keep in dark place,Inert atmosphere,Store in freezer, under -20°C

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