Sodium sulfide is also known as smelly alkali, smelly soda, yellow alkali, alkali sulfide. Sodium sulfide is an inorganic compound, and pure sodium sulfide is a colorless crystalline powder. Strong moisture absorption, soluble in water. The aqueous solution has a strong alkaline reaction. Contact with skin and hair can cause burns. So sodium sulfide is commonly known as alkali sulfide. Sodium sulfide aqueous solutions oxidize slowly in air to sodium thiosulfate, sodium sulfite, sodium sulfate, and sodium polysulfide. Due to the rapid formation of sodium thiosulfate, the main product of oxidation is sodium thiosulfate. Sodium sulfide deliqueses in the air, carbonates and deteriorates, and continuously releases hydrogen sulfide gas. Industrial sodium sulfide due to impurities in its color is pink, brown red, earth yellow. Specific gravity, melting point, boiling point, also vary due to the influence of impurities.
| |
|
| 1 |
2 |
| super grade |
1 grade |
2 grade |
3 grade |
4 grade |
| (NA2S) %≥ |
60 |
60 |
60 |
60 |
60 |
| (NA2SO3) %≤ |
1 |
- |
- |
- |
- |
| (NA2S2O3) %≤ |
2.5 |
- |
- |
- |
- |
| (FE) %≤ |
0.002 |
0.003 |
0.005 |
0.015 |
0.03 |
| (Water Insoluble) %≤ |
0.05 |
0.5 |
0.05 |
0.15 |
0.2 |
| (NA2CO3) %≤ |
2 |
- |
- |
3.5 |
- |
Q1: Can I get some samples?
A: Yes, we can supply the free sample, but the shipping cost be paid by our customers.
Q2: What's your MOQ?
A: Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.
Q3: How about delivery leadtime?
A: Delivery lead time: Within 3-5 days after payment confirmed.
Q4. We don't know you at all, how can we trust you?
A: You are always warm welcomed to visit us at any time.Before we start B2B, MIC has audited our company on-spot and approved our credit. Commitment is the No.1 Point of our Enterprise's Value.
Q5. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery, International Authorized Third-Party Test for the products if you need are highly welcome.
Q6: How to get quotation?
A: We can do according to the customers' request. Pls send inquiry(such as QTY, Usage, Package) in below or your convenient way, will promptly reply in 15mins.
Audited Supplier 
Audited Supplier 
){kind=link}
){kind=link}