Basic information
- Name:
Sodium pyrophosphate decahydrate
- CAS No.:
13472-36-1
- Molecular Structure:
- Formula:
- Na4P2O7.10(H2O)
- Molecular Weight:
- 446.05
- Synonyms:
- Diphosphoricacid, tetrasodium salt, decahydrate (9CI);Pyrophosphoric acid, tetrasodiumsalt, decahydrate (8CI);Sodium diphosphate decahydrate;Sodiumpyrophosphate decahydrate;
- EINECS:
- 231-767-1
- Density:
- 1.82 g/cm3
- Melting Point:
- 80 °C
- Boiling Point:
- 93.8°C
- Solubility:
- water: 0.1 M at 20 °C, clear, colorless
- Appearance:
- white crystals
- Hazard Symbols:
Xi- Risk Codes:
- 36/37/38
- Safety Description:
- 26-36 Details
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Chemistry
IUPAC Name: Tetrasodium phosphonato phosphate decahydrate
Synonyms of Sodium pyrophosphate decahydrate (CAS NO.13472-36-1): Pyrophosphoric acid, tetrasodium salt, decahydrate ; Diphosphoric acid, tetrasodium salt, decahydrate
CAS NO: 13472-36-1
Molecular Formula: Na4P2O7.10(H2O)
Molecular Weight: 446.05
Molecular Structure: 
EINECS: 231-767-1
H bond acceptors: 7
H bond donors: 4
Boiling Point: 93.8°C
Density: 1.82
Freely Rotating Bonds: 2
Polar Surface Area: 143.91 Å2
Melting point: 80°C
Water solubility: 62 g/L (20°C)
Appearance: white crystals
Stability: Stable. Incompatible with strong oxidizing agents.
SMILES: [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O.O.O.O.O.O.O.O.O.O.O
InChI: InChI=1/4Na.H4O7P2.10H2O/c;;;;1-8(2,3)7-9(4,5)6;;;;;;;;;;/h;;;;(H2,1,2,3)(H2,4,5,6);10*1H2/q4*+1;;;;;;;;;;;/p-4
InChIKey: VZWGHDYJGOMEKT-XBHQNQODAS
Std. InChI: InChI=1S/4Na.H4O7P2.10H2O/c;;;;1-8(2,3)7-9(4,5)6;;;;;;;;;;/h;;;;(H2,1,2,3)(H2,4,5,6);10*1H2/q4*+1;;;;;;;;;;;/p-4
Std. InChIKey: VZWGHDYJGOMEKT-UHFFFAOYSA-J
Uses
Sodium pyrophosphate decahydrate (CAS NO.13472-36-1) is used as quality improvers in food processing, such as juice drinks, dairy products, soy milk and so on. Besides, it is also used as analytical reagent, water softener, rust agent, dispersant and emulsifier.
Safety Profile
Safety Information about Sodium pyrophosphate decahydrate (CAS NO.13472-36-1):
Hazard Codes: 
Xi
Risk Statements: 36/37/38
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36: Wear suitable protective clothing.
WGK Germany: 3
HS Code: 28353900