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Molecular formula: Na4P2O7/Na4P2O7.10H2O
Molecular weight: 265.90/446.06
CAS No .: 7722-88-5 / 13472-36-1
H.S CODE: 2835.3900 30
Use: anhydrous
sodium pyrophosphate is used as chelating agent
in electroplating, rust and scale remover, wool
degreaser, dyeing and scouring auxiliary, detergent
ingredient, toothpaste ingredient; in manufacture
of other pyroPhosphate salts.
Sodium pyrophosphate decahydrate is
used as water softener, scale remover, sequestrant,
dispersing agent, dyeing and scouring auxiliary,
etc.
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Product name |
Sodium Pyrophosphate |
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Grade |
Technical Grade |
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Test method |
GB |
GB |
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Type |
Anhydrous |
Decahydrate |
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Assay |
96.5%min |
98.0%min |
| P2O5 |
51.50%min |
- |
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Heavy metal |
0.001%max |
0.001%max |
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pH |
9.9-10.70 |
9.9-1.07 |
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Whiteness |
90 min |
90 min |
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Water-insoluble substances |
0.02%max |
0.10%max |
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Loss on ignition |
0.50% |
38-42% |
Packaging: 50lb plastic woven bag or paper bag, net weight 10Kg or 25Kg; 2,000lb plastic woven bag, net weight 1,000Kg.
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