Customization: | Available |
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CAS No.: | 10124-56-8 |
Formula: | Na6p6o18 |
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1.General Information of Sodium Hexametaphosphate/SHMP 68%
Chemical formula: (NaPO3)62.Introduction of Sodium hexametaphosphate
Sodium hexametaphosphate is a glass phosphate with a molecular ratio of nearly 1 NA2O/P2O5. The past is called "Graham" salt. In 1832 by Graham found. He will dehydrate and the sodium dihydrogen phosphate salt, at the melting point (625 C) under heating, and the melt is rapidly cooled, and prepared hygroscopic Graham salt.3.Performance characteristics of Sodium hexametaphosphate
A partial sodium phosphate polymer, transparent glass flake or white powder crystal. The hygroscopicity is strong; after the moisture absorption becomes sticky, is easy to be moist in the air, is soluble in the water, in the water solubility is bigger, but the dissolution speed is slow; the aqueous solution assumes the acidic reaction. Easy hydrolysis or phosphite. For some metal ions (calcium, magnesium) have the ability to produce or dissolve complex, it can be used to soften water, and lead, silver, barium salt can also be complex.Item | Tech Grade | Food Grade |
Total phosphates (as P2O5)% ≥ | 68 | 68 |
Inactive Phosphates (as P2O5 )%≤ | 7.5 | 7.5 |
Iron (Fe) % ≤ | 0.05 | 0.05 |
PH Value | 5.8-7.3 | 5.8-6.5 |
Solubility | pass | pass |
Heavy Metals (as Pb) % ≤ | 0.001 | |
AS (As)% ≤ | 0.0003 | |
Fluoride (as F) % ≤ | 0.003 | |
Water Insoluble matter % ≤ | 0.05 | 0.05 |
Polymerization | 9-21 | 9-21 |