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Place of Origin
HS-CODE
28-
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Detailed Description
Product name: Sodium Hexametaphosphate(SHMP)
IUPAC name : Sodium Hexametaphosphate;SHMP; Metaphosphoric acid, hexasodium salt; Hexasodium metaphosphate; Sodium metaphosphate; Glassy sodium; Graham's Salt, Sodium Polymetaphosphate; Sodium phosphate (Na6(PO3)6); Sodium metaphosphate; Sodium Hexameta phosphate; sodium henamephosphate;
Molecular Formula: Na6P6O18
Molecular Weight: 611.77
CAS No.: 10124-56-8
Einces: 233-343-1
properties：
Appearance : White, odorless, crystalline powder
Melting point 616 ℃ (decomposition)
The relative density of 2.484 (20 ℃)
Solubility soluble in water, insoluble in organic solvents, 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.
Specification: Standard executed: HG/T2837-1997
No. Specifications Industrial Grade Food Grade
1 Total phosphate, as P2O5%≥ 68.0 68.0
2 Inactive phosphate, as P2O5%≤ 7.5 7.5
3 Iron, as Fe %≤ 0.05 0.05
4 Ph value (1% solution) %≤ 5.8-7.3 5.8-6.5
5 Solubility Qualified Qualified
6 Heavy metals, as Pb %≤ 0.001
7 Arsenic, as As%≤ 0.0003
8 Fluoride as F%≤ 0.003
9 Water insoluble %≤ 0.05 0.06
Preparation:
By PentoxideAndSodaAccording to a certain percentage of mixed reactions, and heats it off together, the resulting sodium hexametaphosphate by the sudden cold melt production, cooling, finished the Industry SHMP.
P2O5 + Na2CO3→2NaPO3 + CO2
6NaPO3→(NaPO3)6
Packing: Plastic-woven sack with inner polythene bag; Net weight: 25kg, 50kg or 1, 000kg.
Applications:
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.
Storage:
Stored in ventilated and dry place.
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