As a food additive, the edibility of Sodium Hydrosulfite is most concerned by customers. Our Food-grade Sodium Hydrosulfite(Sodium Dithionite) is strictly conformed to the international standard. Meanwhile adjusting the flavor and color, our Sodium Hydrosulfite(Sodium Dithionite) can let you customers enjoy the food without toxic concerns.
Sodium Hydrosulfite(Sodium Dithionite) is widely identified as a better bleaching agent than Sodium Bisulfite in terms of improving paper whiteness. The concentration, dosage, pH, temperature, and time of bleach are the most important factors during the paper bleaching process. For minimizing damages to the equipment and meanwhile improving the paper whiteness, the Ph of our Sodium Hydrosulfite(Sodium Dithionite) is strictly controlled at a certain ratio, which is favorable for your equipment self-life and improving your paper competitiveness in the market.
A completely decolored fabric is the basis for the dyeing process. Highly effective bleaching agent improves the decolorization quality. This is the reason why we have dedicated to higher and higher quality Sodium Hydrosulfite(Sodium Dithionite) for years. Hence, high stability and purity allow our users to increase profits by saving usage volume.
| Item | Technical Grade | Food Grade | ||
| 90% Grade | 88% Grade | 85% Grade | ||
| Na2S2O4 | ≥90% | ≥88% | ≥85% | ≥85% |
| Iron(Fe) | ≤20ppm | ≤20ppm | ≤20ppm | ≤20ppm |
| Zinc(Zn) | ≤1ppm | ≤1ppm | ≤1ppm | ≤1ppm |
| EDTA | / | / | / | Qualified |
| Arsenic | / | / | / | ≤1ppm |
| Other heavy metal(as Pb) | / | / | / | ≤1ppm |
| Formate | / | / | / | ≤0.05% |
| Solution Appearance | Clear | Clear | Clear | Clear |
| Water Insolubles | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.05% |