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Sodium Acid Pyrophosphate Structure

Sodium Acid Pyrophosphate

Chemical 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)
biological source rabbit
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.
InChI InChI=1S/Na.H4O7P2.H/c;1-8(2,3)7-9(4,5)6;/h;(H2,1,2,3)(H2,4,5,6);
InChIKey IQTFITJCETVNCI-UHFFFAOYSA-N
SMILES O(P(O)(O)=O)P(O)(O)=O.[NaH]
LogP -3.420 (est)
CAS DataBase Reference 7758-16-9(CAS DataBase Reference)
EPA Substance Registry System Disodium diphosphate (7758-16-9)
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Safety Information

Hazard Codes  Xi
Risk Statements  36
Safety Statements  24/25-26
WGK Germany  2
RTECS  UX6475000
TSCA  Yes
Hazardous Substances Data 7758-16-9(Hazardous Substances Data)

MSDS

Usage And Synthesis

Preparation Products And Raw materials

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