Sodium Hexametaphosphate

Synonym(s)

: Sodium metaphosphate, pentasodium triphosphate, sodium esametaphosphate, Calgon S, vitreous sodium Graham`s salt

Mol. Formula

: Na6P6O18

EC / List no.

: 233-343-1

CAS no.

: 10124-56-8

Molecular weight

: 611,7704

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

Application

»   This substance is used in the following products: cosmetics and personal care products, coatings, fillers, putties, plasters, modeling clay, adhesives and sealants, inks and toners, pharmaceuticals, polymers, washing, cleaning products and fertilizers.
»   Other releases of this substance into the environment are likely to result from: indoor use (eg machine wash fluids/detergents, automotive care products, paints and coatings or adhesives, fragrances and air fresheners) and outdoor use.
»   Used in formulation and/or repackaging of mixtures, agriculture, forestry and fisheries, civil and civil works, municipal supply (eg electricity, steam, gas, water), sewage treatment, scientific research and development.

Product Specifications

Physical and Chemical Properties
» Sodium hexametaphosphate appears in the form of white powder crystals.
» Odorless.

Properties

Characteristics	Unit	Value	Condition
Melting point	°C	628
Boiling point	°C	1500
Solubility			Soluble in water (insoluble in organic solvents)
Density	g/cm3	2.58	20 °C
Refractive index		1.482