Sodium Hexametaphosphate (SHMP)

Mound of white powder on a black dish beneath a sodium hexametaphosphate SHMP heading

Phosphate Related Products

Product
Sodium Hexametaphosphate (SHMP)

Overview

Sodium hexametaphosphate (SHMP) is a glassy polyphosphate, supplied as white powder or granules, that dissolves readily in water. It is an excellent sequestering and dispersing agent for calcium and magnesium ions.

Also known as

SHMP; Sodium polymetaphosphate; Graham’s salt

CAS number

10124-56-8

Molecular formula

(NaPO3)6

Molecular weight

611.77

Specifications

Test itemsSpecifications
AppearanceWhite powder or granules
Total phosphate /%≥68
Water insoluble /%≤0.040
Fe /%≤0.030
pH (1%)5.8-7.0
SolubilityPassed

Applications

  • Water treatment: scale and corrosion inhibitor and water softener
  • Dispersant in ceramics, pigments, paper and mineral processing
  • Detergents and cleaning formulations
  • Metal surface treatment and textile processing

Packaging

25 kg/bag (PE-lined); 1000 kg/jumbo bag.

Storage

Store in a dry, ventilated warehouse with the bags kept sealed, as the product absorbs moisture from the air.

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