White Granular Borax Decahydrate for Glass Making, Na2B4O7.10H2O Sodium Tetraborate Decahydrate for Glassware
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.
Na2B4O7.10H2O Sodium Tetraborate Decahydrate for Glassware
| Product Name | White Granular Borax Decahydrate for Glass Making |
| Chemical Formula | Na2B4O7.10H2O |
| Other Name | disodium tetraborate decahydrate/ sodium tetraborate decahydrate |
| Purity | 95%/99.5%/99.9% |
| 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 |
| Appearance | White Granular |
| Application | glass/ glassware making |
2. Borax Decahydrate Specifications
| Sodium Tetraborate Decahydrate for Glassware |
| 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 for Glass Making/ Glassware
Borax decahydrate is widely used in glass and glassware making process. Here are some key ways in which borax decahydrate is used in the glass industry:
1. Glass Batch Formulation: Borax decahydrate is commonly included in the batch formulation for making glass. It serves as a flux, helping to lower the melting point of the raw materials and facilitating the fusion of the glass components at lower temperatures. This aids in reducing the energy consumption and costs associated with the glassmaking process.
2. Viscosity Control: Borax can influence the viscosity of the glass melt. By adjusting the amount of borax in the batch, glassmakers can regulate the flow properties of the molten glass, making it easier to shape and form into the desired final product.
3. Thermal Expansion Control: Borax decahydrate can assist in controlling the thermal expansion properties of glass/galssware. By incorporating borax into the glass composition, manufacturers can adjust the coefficient of thermal expansion, which is crucial for ensuring the durability and stability of the glass product, especially in applications where temperature variations are common.
4. Surface Finishing: Borax can be used as a component in glass/glassware cleaning and finishing solutions. It helps to remove impurities and residues from the glass surface, promoting clarity and improving the overall quality of the finished glass product.
4. Borax Decahydrate Product Pictures
5. Packing and Shipping for Borax Decahydrate
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