Borax Decahydrate for Metallurgical Fluxes, Purity 99.9% White Granular Sodium Tetraborate Decahydrate for Gold Mining
1. Borax Decahydrate Introduction
Borax decahydrate, also known as sodium borate decahydrate or simply borax, is a naturally occurring mineral compound that is often used in various household and industrial applications. It is composed of sodium, boron, oxygen, and water molecules.Borax decahydrate is a chemical substance with the molecular formula Na2B4O7 · 10H2O. It is a semi transparent colorless crystal or crystalline white powder. Borax decahydrate has no odor and a salty taste. When heated to 350-400 ℃, borax decahydrate will lose all its crystalline water and become anhydrous borax. Borax decahydrate is soluble in water and also in glycerol, but insoluble in alcohol. Its aqueous solution is weakly alkaline and appears colorless glassy when melted.
Borax Decahydrate for Metallurgical Fluxes Parameters
| Product Name | Borax Decahydrate for Metallurgical Fluxes |
| Chemical Formula | Na2B4O7.10H2O |
| Other Name | disodium tetraborate decahydrate/ sodium tetraborate decahydrate |
| CAS No. | 1303-96-4 |
| EINECS NO. | 215-540-4 |
| M.W. | 381.87 |
| Boiling Point | 320°C |
| Melting Point | 75 °C |
| HS Code | 2840190000 |
| Application | Metallurgical fluxes, gold mining |
2. Borax Decahydrate Specifications
| Purity 99.9% White Granular Sodium Tetraborate Decahydrate Specifications |
| Component | Content |
| B2O3 | 36.47-38.50% |
| Na2B4O7.10H2O | 99.90-105.45% |
| Na2O | 16.24-17.14% |
| SO4 | 135 ppm max |
| Cl | 70 ppm max |
| Fe | 10 ppm max |
| Size | |
| +1.180mm | 4.00% max |
| -0.063mm | 4.00% max |
3. Borax Decahydrate Application
Borax Decahydrate can be used to dissolve metal oxides in the recovery of metals such as brass, copper, lead, and zinc from scrap or smelting slag. In ferrous metallurgy, borax decahydrate is used as a cover flux to prevent oxidation at the surface of the molten ingot. In welding, brazing, and soldering, borax decahydrate covers the metal surfaces, excluding air and preventing oxidation. It also acts as a solvent and cleaning agent.
Borax decahydrate can be used for glod mining. Borax decahydrate can be used for gold purification to reduce the melting point of gold. Borax is a melting aid, and metallurgy has a melting aid effect. Borax is a melting aid that has a melting aid effect in the metallurgical industry. When sodium tetraborate decahydrate is heated together with gold, it will remove the oxides attached to the metal surface, react with impurities, and float on the metal surface without mixing with the metal.
4. Borax Decahydrate Product Pictures
5. Packing and Shipping for Borax Decahydrate
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