Sodium hexametaphosphate is a salt of composition Na₆[(PO₃)₆]. Sodium hexametaphosphate of commerce is typically a mixture of metaphosphates, 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.
|Molar Weight||611.77 g/mol|
|Melting Point||628 °C|
|Boiling Point||1,500 °C|
Synonyms: Graham's Salt, Metaphosphoric Acid Sodium Salt, Polyphosphoric Acid Sodium Salt, SHMP, Sodium Hexametaphosphate, Sodium Hexametaphosphate Short Chain, Sodium Metaphosphate, Sodium Polyphosphate
Chemical Formula: CaH6Na4O18P6+6
CAS Number: 68915-31-1