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White Granular Disodium Tetraborate Pentahydrate, Borax Pentahydrate Na2B4O7.5H2O for Glazes and Enamels
1. Borax Pentahydrate Introduction
Borax pentahydrate, also known as disodium tetraborate pentahydrate, is a crystalline form of borax composed of sodium, boron, oxygen, and water molecules. It is chemical formula is Na2B4O7.5H2O. Borax pentahydrate boron content is about 15% and boron oxide content is more than 48%. Borax Pentahydrate is commonly used in various industrial and household applications due to its unique properties. It is known for its role as a cleaning agent, as a flux in welding, as a buffering agent in chemical laboratories, and even as a component in some cosmetics and pharmaceuticals. Its ability to dissolve in water and form alkaline solutions makes it versatile for a range of uses. With its distinctive properties and wide-ranging applications, borax pentahydrate plays a significant role in numerous industries and daily activities.
| Product Name | White Granular Disodium Tetraborate Pentahydrate |
| Cas No. | 12179-04-3 |
| Einecs No | 215-540-4 |
| Formula | Na2B4O. 5H2O |
| M.W | 291.35 |
| Density | 1.815g/cm3 |
| HS Code | 2840190000 |
| Package | 25kgs / 1200KGS PP Bags |
| Application | glazes and enamels |
2. Borax Pentahydrate Specifications
| Component | Content |
| B2O3 | 48.00-49.35% |
| Na2B4O7.5H2O | 100.42-103.24% |
| Na2O | 21.37-21.95% |
| SO4 | 135ppm max |
| Cl | 70ppm max |
| Fe | 3ppm max |
| Insolubles in water | 150ppm max |
| Particle size specifications | |
| Size | Content |
| +1.180mm | 4.00% max |
| -0.075mm | 5.00% max |
3. Borax Pentahydrate for Glazes and Enamels
Borax pentahydrate is a versatile compound that finds extensive use in the formulation of glazes and enamels due to its unique properties. Here are some ways in which borax pentahydrate is utilized in the production of glazes and enamels:
1. Flux Agent: Borax pentahydrate serves as a flux in glazes and enamels, lowering the melting point of the materials and promoting the fusion of different components. This helps in achieving a smooth, glassy surface on ceramics.
2. Color Development: Borax pentahydrate can act as a colorant in glazes and enamels. When combined with other metal oxides, it can influence the color of the final product, allowing for a wide range of hues and shades.
3. Surface Tension: By reducing the surface tension of the glaze or enamel, borax pentahydrate helps in achieving even coverage and consistent application on the surface of ceramics, resulting in a uniform finish.
4. Control of Thermal Expansion: Borax pentahydrate contributes to controlling the thermal expansion properties of glazes and enamels. This is crucial in ensuring that the coating remains stable and does not crack or craze under temperature variations.
4. Borax Pentahydrate Pictures
5. Packing and Shipping