Sodium hexametaphosphate

Sodium hexametaphosphate
Names
	IUPAC name sodium cyclo-hexaphosphate
	Other names Calgon S; Glassy sodium; Graham's salt; Hexasodium metaphosphate; Metaphosphoric acid, hexasodium salt
Identifiers
CAS Number	68915-31-1 [EPA];
3D model (JSmol)	Interactive image;
ChemSpider	23340 ;
ECHA InfoCard	100.030.299
EC Number	233-343-1;
MeSH	sodium+polymetaphosphate
PubChem CID	24968;
UNII	N40N91DW96;
CompTox Dashboard (EPA)	DTXSID1047522 ;
	InChI InChI=1S/6Na.H6O18P6/c;;;;;;1-19(2)13-20(3,4)15-22(7,8)17-24(11,12)18-23(9,10)16-21(5,6)14-19/h;;;;;;(H,1,2)(H,3,4)(H,5,6)(H,7,8)(H,9,10)(H,11,12)/q6*+1;/p-6 Key: GCLGEJMYGQKIIW-UHFFFAOYSA-H ;
	SMILES [O-]P1(=O)OP(=O)([O-])OP(=O)([O-])OP(=O)(OP(=O)(OP(=O)(O1)[O-])[O-])[O-].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+];
Properties
Chemical formula	Na6[(PO3)6]
Molar mass	611.7704 g mol−1
Appearance	White crystals
Odor	odorless
Density	2.484 g/cm3
Melting point	628 °C (1,162 °F; 901 K)
Boiling point	1,500 °C (2,730 °F; 1,770 K)
Solubility in water	soluble
Solubility	insoluble in organic solvents
Refractive index (nD)	1.482
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Irritant
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H319
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	3.053 g kg−1
Safety data sheet (SDS)	hazard.com
Related compounds
Other anions	Trisodium phosphate; Tetrasodium pyrophosphate; Pentasodium triphosphate
Related compounds	Sodium trimetaphosphate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Sodium hexametaphosphate (SHMP) is a salt of composition Na₆[(PO₃)₆]. Sodium hexametaphosphate of commerce is typically a mixture of metaphosphates (empirical formula: NaPO₃), of which the hexamer is one, and is usually the compound referred to by this name. Such a mixture is more correctly termed sodium polymetaphosphate. They are white solids that dissolve in water.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.