Sodium Hexametaphosphate 68% (SHMP)
CAS No.: 10124-56-8
Molecular Formula: Na6P6O18      
Molecular Weight: 611.77
Structural Formula:


Properties:
White powder, relative density is 2.484 (20), easily soluble in water, but not in organic solution, absorbent to dampness, and turn sticky when absorbed dampness in air. It is possible to form solvent compound with metallic ions such as Ca, Ba, Mg, Cu and Fe; It is a fine agent for water treatment.

Application:
For industrial use, such as oil field, paper-making, textile, dyeing, petrochemical industry, tanning industry, metallurgical industry and building material industry, it is mainly used as a water softening agent in solution for printing, dyeing, and boiler; Diffusant in papermaking; Retarding agent, floating agent, dispersing medium, high temperature agglomerant, detergent and soil analytical chemistry reagent. For food grade, it is mainly used as additive agent, pH adjusting agent and fermentation agent, and nourishment.

Specifications:
No   Specification   Industrial grade   Food grade
1   Total phosphate, as P 2 O 5    %¡Ý   68.0   68.0
2  Inactive phosphate,as P 2 O 5 %¡Ü   7.5   7.5
3   Iron, as Fe,  %¡Ü   0.05   0.05
4   pH of 1% water solution   5.8-7.3   5.8-6.5
5   Solubility   Qualified   Qualified
6   Heavy metal, as Pb,  %¡Ü   -   0.001
7   Arsenic, as As,  %¡Ü   -   0.0003
8   Fluoride, as F,  %¡Ü   -   0.003
9   Water insoluble,  %¡Ü   0.05   0.06

Packaging: Plastic-woven sack with inner polythene bag; Net weight: 25kg, 50kg or 1, 000kg. Stored in ventilated and dry place.

Key Words: Sodium metaphosphate; Sodium hexametaphosphate;
Metaphosphoric acid hexasodium salt; SHMP