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Items
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Industrial Grade
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Food Grade
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Total phosphate, as P2O5, %≥
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68.0
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68.0
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Inactive phosphate, as P2O5, %≤
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7.5
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7.5
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Iron, as Fe, %≤
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0.05
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0.05
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Ph value (1% solution), %≤
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5.8-7.3
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5.8-6.5
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Solubility
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Qualified
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Qualified
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Heavy metals, as Pb , %≤
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0.001
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Arsenic, as As, %≤
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0.0003
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Fluoride as F, %≤
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0.003
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Water insoluble , %≤
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0.05
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0.06
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Detailed introduction :
Molecular Formula: (NaPO3)6
Molecular Weight: 611.82
Cas No.: 10124-58-8
HS Code: 28353900
Standard executed: HG/2519-1993(Industry Grade) GB1890-89(Food Grade)
Properties : White powder, 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.
Application :
1. 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 bioler; diffusant in papermaking; slow corrodent, floating agent, dispersing medium, high temperature agglomerant, detergent and soil analytical chemistry reagent.
2. For food grade :it is mainly used as additive agent, PH adjusting agent and fermentation agent, and nourishment.