Description
Sodium Pyrophosphate Quick Details
Chemical Name: Sodium pyrophosphate
Synonyms: Disodium pyrophosphate; Disodium dihydrogenpyrophosphate; Diphosphoric acid disodium salt; Disodium dihydrogen pyrophosphate; disodium pytophosphate; di-sodium dihydrogen pyrophosphate
CAS No.: 7758-16-9
Molecular Fomula: H5NaO7P2
Chemical Structure:
Molecular weight: 201.97
Appearance: White powder
Assay??99%
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.
??max
??: 260 nm Amax: 0.11
??: 280 nm Amax: 0.09
Merck
13,8643
Stability:
Stable.
application:
Sodium Pyrophosphate Dibasic is anhydrous form, pyrophosphate salt used in buffers.
Packaging and Shipping?
Drum, 25kg
Storage
Keep in dark place,Inert atmosphere,Store in freezer, under -20??C
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