Sodium Hexametaphosphate

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.

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

Characteristics

Molar Weight
611.77 g/mol
Melting Point
628 °C
Boiling Point
1,500 °C
Density
2.484 g/cc
Forms
White, Granules

Uses and Applications

Key applications

  • Buffer agent
  • Photographic supplies
  • Leather processing
  • Water treatment
  • Cleaning products
  • Oil and Gas
  • Pulp and paper
  • Textile handling
  • Detergent
  • Rubber

Industries

  • Pulp & Paper
  • Energy Services
  • Cleaning
  • Water Treatment
  • Rubber