Sodium pyrosulfite
Molecular formula: Na2S2O5
Executive standard: industrial grade HG/T2826—2008, food grade GB1893—2008
Appearance: white or light yellow crystal powder
Packing: compound plastic woven bag with inner plastic film and net weight is 25kg or 50kg
Notes: the product should be stored in ventilated and dry warehouse
Uses: mordant, antichlor, decolorizer, preservative, waste water treating agent
Quality guarantee period: 6 months
Product technical index
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index |
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industrial grade |
food grade |
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superior grade |
top grade |
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main content(Na2S2O5),％ ≥ |
96.5 |
95.0 |
96.5 |
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iron(Fe), % ≤ |
0.005 |
0.010 |
0.003 |
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clarity |
— |
— |
pass testing |
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water insoluble, ％ ≤ |
0.05 |
0.05 |
— |
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heavy metal(Pb),% ≤ |
— |
— |
0.0005 |
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arsenic content(As), % ≤ |
0.0001 |
— |
0.0001 |