| Product Name | Sodium Hydrosulfite 85% | |
| ITEM | STANDARD | TESTING RESULT |
| Purity(wt%) | 85min | 85.84 |
| Na2CO3(wt%) | 3-4 | 3.41 |
| Na2S2O3(wt%) | 1-2 | 1.39 |
| Na2S2O5(wt%) | 5.5 -7.5 | 6.93 |
| Na2SO3(wt%) | 1-2 | 1.47 |
| Fe(ppm) | 20max | 18 |
| Water lnsoluble | 0.1 | 0.05 |
| HCOONa | 0.05max | 0.04 |
| Product Name | Sodium Hydrosulfite 88% | |
| Na2S2O4% | 88 MIN | 88.59 |
| Water insolubles% | 0.05MAX | 0.043 |
| Heavy MetalContent(ppm) | 1MAX | 0.34 |
| Na2CO3% | 1-5.0 | 3.68 |
| Fe(ppm) | 20MAX | 18 |
| Zn(ppm) | 1MAX | 0.9 |
| Product Name | Sodium Hydrosulfite 90% | |
| Specification | Tolerance | Result |
| Purity(wt%) | 90min | 90.57 |
| Na2CO3(wt%) | 1 -2.5 | 1.32 |
| Na2S2O3(wt%) | 0.5-1 | 0.58 |
| Na2S2O5(wt%) | 5 -7 | 6.13 |
| Na2SO3(wt%) | 0.5-1.5 | 0.62 |
| Fe(ppm) | 20max | 14 |
| Water Insolubles | 0.1 | 0.03 |
| Total other heavy metals | 10ppm max | 8ppm |
Widely used in reduction dyeing, reduction cleaning, printing and decolorization of textile industry and bleaching of silk, wool, nylon and other fabrics.
Can be used for food bleaching, such as gelatin, sucrose, candied fruit, soap, animal (vegetable) oil, bamboo, porcelain clay, etc.
Sodium dithionite is the most suitable bleaching agent for wood pulp and paper.
Used in organic synthesis, such as reducing agent or bleaching agent in the production of dyes and pharmaceuticals.
| Package | 50KG Bag |
| Quantity(20`FCL) | 22.5MTS/20'FCL |
Need help? Be sure to visit our support forums for answers to your questions!
May I place a sample order?Of course, we are willing to accept sample orders to test quality, please send us the sample quantity and requirements. Besides, 1-2kg free sample is available, you just need to pay for the freight only.
How about the validity of the offer？Usually, quotation is valid for 1 week. However, the validity period may be affected by factors such as ocean freight, raw material prices, etc.
Can the product be customized?Sure, product specifications, packaging and logo can be customized.
What is the payment method you can accept?We usually accept T/T, Western Union, L/C.