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| MOQ | 20 Metric |
| Classification | sulphate | Type | Sodium sulfite |
| CAS No. | 7681-57-4 | Other Names | Sodium sulfite anhydrous |
| MF | Na2SO4 | EINECS No. | 231-673-0 |
| Place of Origin | Shandong, China | Grade Standard | food grade, Industrial Grade |
| Purity | 97%min | Appearance | White Powder |
| Application | Water Treatment | Brand Name | groupworkwin |
| Model Number | 98% | Hs code | 2833210000 |
|
ITEM |
Quality Index |
|
|
STANDARD |
result |
|
|
Na2S2O5 (calculated by dry base) % |
≥96.5 |
97.2 |
|
Fe (calculated by dry base) % |
≤0.003 |
0.0009 |
|
Water insoluble matter (calculated by dry base) % |
≤0.05 |
0.002 |
|
Have metal (calculated by dry base) % |
≤0.005 |
0.004 |
|
ARSENIC (calculated by dry base) % |
≤0.0001 |
0.0001 |
|
PH(5% water soluble) |
4.72 |
|
|
Package and Trade mark |
By woven plastic bag out , and white plastic bag inner |
|
|
Result |
qualified |
|
|
Remark |
||
1. How do you control
the quality?
We will make samples before
mass production, and after sample approved, we'll begin mass
production. Doing 100% inspection during production, then do
random inspection before packing.
2. Do you supply
sample?
Yes, we can supply
some samples for your test.
3. Do you accept sample
order?
Welcome sample order for a
trial start,10kg, 20kg, 50kg as you need.
4.Do you supply product
report?
Yes. We'll give you product
analysis report before shipping.
5. Can we visit your
factory?
Yes. Welcome to visit.
One moment please
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