| CAS No.: | CAS 7775-14-6 |
|---|---|
| Formula: | Na2s2o4 |
| EINECS: | 231-890-0 |
| Certification: | CCIC, CIQ, ISO |
| Purity: | 80%~90% |
| Type: | Sodium Hydrosulfite |
| Customization: |
|---|
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| CAS NO. | 7775-14-6/ 7631-94-9 | HS.CODE | 28311010 |
| EINECS NO. | 231-890-0 | HAZARD CLASS | 4.2 |
| UN NO. | 1384 | Storage Condition | Store at +5°C to +30°C |
| APPEARANCE | White to Gray-White crystalline powder | ||
| Odor | Odorless or a slight odor of SO2 gas | ||
| Solubility | Easily Soluble in Water, Insoluble in Ethanol | ||
| Grade of Quality | Superior G. | First G. | Qualified G. |
| Percentage of Sodium Hydrosulfite(Na2S2O4 ) Content | ≥90% | ≥88% | ≥85% |
| Water Insoluble | ≤0.1% | ≤0.1% | ≤0.3% |
| Sodium Thiosulfate(Na2S2O3) | ≤1.0% | ≤1.3% | ≤1.5% |
| Sodium Metabisulfite(Na2S2O5) | 5-7% | 5-7% | 5-7% |
| Sodium Bisulfite(NaHSO3) | ≤0.5% | ≤0.5% | ≤0.5% |
| Sodium Carbonate(Na2CO3) | 0.6-2% | 0.6-2% | 0.6-2% |
| Sodium Formate(HCOONa) | ≤0.5% | ≤0.5% | ≤0.8% |
| Zn | ≤0.0001% | ≤0.0001% | ≤0.0001% |
| Pb | ≤0.0001% | ≤0.0001% | ≤0.0001% |
| Fe | ≤0.005% | ≤0.005% | ≤0.005% |
Cerficates: COC, QMS, OHSMS, EMS, Products Test Cerificates etc.
1) What about product quality assurance policy?
We accept pre-shipment test by SGS or any other third party agents.
2) Can we print our logo on the product ?
Yes, we can do it. Just send us your logo design.
3) Do you accept small orders ?
Yes, we can do it. Pls contact us for order details.
4) How about the price? Can you make it cheaper ?
Price is negotiable under different conditions, we are assuring you to get the most competitive price.
5) Do you offer free samples ?
Yes, we could offer the sample for free charge but do not pay the cost of freight.
6) What are your payment terms ?
We usually accept T/T, L/C or other terms for negotiating.
7) Can I visit your factory in China ?
Yes, you are welcomed to visit our factory.
8) How Can I place an order ?
Kindly pls chat with us directly, or you could just send us inquiry, we will arrange your order accordingly after all details is finalized.
Suppliers with verified business licenses
Audited Supplier 
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