| Customization: | Available |
|---|---|
| CAS No.: | 7757-83-7 |
| Formula: | Na2so3 |
|
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quality index
1. Main content: Generally, the mass fraction of sodium sulfite is required to be ≥ 96.0%, and some high-end products can reach 97% or even higher. The high content ensures its effective role in various applications.
2. Iron content: It is usually stipulated that the mass fraction of iron (Fe) is ≤ 0.003%. A low iron content can avoid contaminating the product or affecting its color during use.
3. Water insoluble content: The mass fraction of water insoluble content is generally ≤ 0.03%, which reflects the purity and impurity content of the product. Low water insoluble content ensures the solubility and effectiveness of the product in water.
4. Free alkali content: Calculated as sodium carbonate, the mass fraction of free alkali is generally ≤ 0.40%. An appropriate free alkali content helps maintain the chemical stability and safety of the product during use.
PO NO. |
JC-6003 | PRODUCTION DATE |
2024-12 | EXPIRY DATE |
2026-12 |
PACKING |
25KG BAG |
GRADE |
INDUSTRIALGRADE |
STANDARD |
HG/T 2967-2010 |
TEST ITEMS |
TEST STANDARD |
TEST RESULT |
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Na2SO3 |
≥97.0% | 98.10% | |||
IRON(Fe) |
≤0.003% | 0.0015% | |||
WATER INSOLUBLE |
≤0.02% | 0.01% | |||
Na2CO3 |
≤0.10% | 0.10% | |||
SULPHATES(SO4) |
≤2.5% | 1.0% | |||
CHLORIDE(NaCl) |
≤0.10% | 0.10% | |||
CLEARNESS |
THROUGH EXPERIMENTS |
||||
APPEARANCE |
WHITE CRYSTALLINE POWDER |
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CONCLUSION |
SUPERIOR PRODUCTS |
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INSPECTOR: ZHAGLI CHECKER:GAOXIANG |
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Packaging: Usually packaged in woven bags lined with plastic bags or kraft paper bags, with a net weight of 25kg, 50kg, etc. per bag. There are also other packaging forms such as bulk according to customer needs.
Storage conditions: It should be stored in a cool, dry, well ventilated warehouse, away from sources of fire and heat, and protected from direct sunlight. The packaging must be sealed to prevent moisture absorption and spoilage.
Q:. May I get some samples?
A: Free sample can be sent on your request but express charges are on your account.
Q: Is this price on the page correct?
A: The listed price is only for reference, for latest price, please contact us directly.
Q:What is your delivery time?
A: 7-10 working days normally and it depends on your quantity and our stock.
Q: What is your payment term?
A: L/C, D/P, T/T
Q: Where is your loading port?
A: Tianjin Qingdao, Shanghai, other China main ports.
Q: May I visit your factory?
A: Welcome to visit our factory at your convenience.
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