specification:
GB9983-2004
|
item |
superior quality |
First grade |
qualified product |
|
whiteness,% |
90.0 min |
85.0 |
80.0 |
|
P2O5,% |
57.0 min |
56.5 |
55.0 |
|
Na5P3O10,% |
96.0 min |
90.0 |
85.0 |
|
water insolubles,% |
0.10 max |
0.10 |
0.15 |
|
Fe,% |
0.007 max |
0.015 |
0.030 |
|
PH |
9.2-10.0 |
|
|
Product Description
Sodium Hexametaphosphate(SHMP) 68%min
Chemical formula: (NaPO3)6
Molecular weight: 611.82
Standard executed: HG/T2837-1997
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.
Technical Specifications:
No Specification----------------Industrial grade- ---------------- Food grade
1 Total phosphate, as P 2 O 5 %-------≥ 68.0-------------- 68.0
2 Inactive phosphate, as P 2 O 5 %------≤ 7.5----------------7.5
3 Iron, as Fe, %--------------------≤ 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, % --------------≤ - ---------------0.001
7 Arsenic, as As, %---------------≤ - ----------------0.0003
8 Fluoride, as F, %----------------≤ - ----------------0.003
9 Water insoluble, %--------------≤ 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.
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