Sodium Pyrophosphate Tetrabasic

Catalog	ACM7722885-1
CAS	7722-88-5
Structure
Category	Flocculant
Description	Tetrasodium pyrophosphate appears as odorless, white powder or granules. mp: 995°C. Density: 2.53 g/cm³. Solubility in water: 3.16 g/100 mL (cold water); 40.26 g/100 mL boiling water. Used as a wool de-fatting agent, in bleaching operations, as a food additive. The related substance tetrasodium pyrophosphate decahydrate (Na4P2O7*10H₂O) occurs as colorless transparent crystals. Loses its water when heated to 93.8°C.;DryPowder; DryPowder, PelletsLargeCrystals; PelletsLargeCrystals;Colourless or white crystals, or a white crystalline or granular powder. The decahydrate effloresces slightly in dry air;ODOURLESS COLOURLESS OR WHITE CRYSTALS OR POWDER.;Odorless, white powder or granules. [Note: The decahydrate (Na4P2O7 ? 10H₂O) is in the form of colorless, transparent crystals.]
IUPAC Name	tetrasodium; phosphonato phosphate
Molecular Weight	265.90
Molecular Formula	Na4O7P2
Canonical SMILES	[Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O
InChI	InChI=1S/4Na.H4O7P2/c;;;;1-8(2,3)7-9(4,5)6/h;;;;(H2,1,2,3)(H2,4,5,6)/q4*+1;/p-4
InChI Key	FQENQNTWSFEDLI-UHFFFAOYSA-J
Boiling Point	Decomposes (NIOSH, 2016);Decomposes
Melting Point	1810 °F (NIOSH, 2016);Mp 993 ° (985 °);988 °C;988 °C;1810°F
Density	2.45 (NIOSH, 2016);2.534;Relative density (water = 1): 2.5;2.45
Solubility	7 % at 77° F (NIOSH, 2016);Soluble in water. Insoluble in ethanol;81.4 mg/mL at 25 °C;IN WATER: 2.61 G/100 ML @ 0 °C; 6.7 G/100 ML @ 25 °C; 42.2 G/100 ML @ 100 °C;(77°F): 7%
EC Number	231-767-1
MDL Number	MFCD00003513
Refractive Index	INDEX OF REFRACTION: 1.425
Vapor Pressure	0 mm Hg (approx) (NIOSH, 2016);0 mmHg (approx)

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