Calphos N sodium hexa meta phosphate (SHMP), is an additive for many industries to improve and balance the performance. It is used in all high solid content exterior and interior paints as pigment disperserand filler.

In coating industry, Calphos N is used as water softening agent, disperser and flotation agent.

Water softening agent

Applying Calphos N SHMP in coating industry (exterior, interior) helps softening water in applications. By this improvement, pigments and fillers can be dispersed easily and supports flotation as flotation agent.


Used as disperser, flotation agent, water softening agent in;

  • Paper industry
  • Coating industry
  • Petroleum industry
  • Metallurgy industry

Used as additive, nourishing agent, pH regulator, metal chelating agent in;

  • Food industry

Key features

  • Can be used as water softening agent
  • Works as flotation agent
  • Pigment and filler disperser in coating applications
  • Very low iron (Fe) content
  • No effect on colour of application
  • No impurities

Typical Properties

Product appearance white powder white powder
Total phosphate content (%, min) 68.0 68.0
Inactive phosphate content (%, max) 7.5 7.5
Fe content (%, max) 0.05 0.02
Water soluble content (%, max) 0.05 0.06
pH level 5.8-7.0 5.8-6.5
Arsenic content (As, %, max) 0.0003
Fluorides (F, %, max) 0.0003
Heavy metals (Lead, %, max) 0.001
Solubility in water Soluble Soluble

Unique combination, different solutions

The unique combination of Calphos N SHMP’s ability to sequester water hardness and its infinite solubility in water makes it a product of choice in applications such as laundry boosters, water conditioners and in bath beads.

Calphos N SHMP can be used in continously recycled industrial water as softener and to control scale formation in condensers, heat exchangers, pipelines and boilers. Calphos N SHMP has two particular advantages. First, it maintains polyphosphate properties longer in high temperature systems at mildly alkaline pHs.

Second, its infinite solubility in water allows very concentrated stock solutions to be prepared.


25 kgs multi layer paper/PE bag.


Store in cool, dry and well ventilated areas. For more details, please refer to the material safety data sheet.