Disodium octaborate tetrahydrate, with the CAS number 12280-03-4, is a white crystalline powder. Its chemical formula is Na₂B₈O₁₃·4H₂O. This compound has a relatively high boron content, which makes it an important boron source in many applications. It is soluble in water, and its solubility varies with temperature. At room temperature, it can dissolve to form a clear solution, which provides convenience for its use in various processes. The product is typically supplied in high - quality form directly from the factory, ensuring its purity and consistency in quality.
1. Agriculture: Disodium octaborate tetrahydrate is widely used as a boron fertilizer. Boron is an essential micronutrient for plants, which plays a crucial role in cell wall formation, pollen germination, and fruit development. By applying this compound to the soil, it can effectively supplement the boron deficiency in the soil, improve crop yield and quality, especially for crops such as fruits, vegetables, and oilseeds.
2. Wood Preservation: It has excellent anti - termite and anti - fungal properties. When used as a wood preservative, it can penetrate deep into the wood structure, protecting the wood from decay and insect damage. This is particularly useful for wooden structures in outdoor or humid environments, such as decks, fences, and poles.
3. Glass and Ceramics: In the glass and ceramics industry, it can be used as a fluxing agent. It helps to lower the melting point of the raw materials, reduce energy consumption during the production process, and improve the quality and performance of the final products, such as increasing the transparency and strength of glass.
1. Agricultural Use: For soil application, the recommended dosage is usually 1 - 2 kg per acre, depending on the soil type and boron deficiency level. It can be mixed with other fertilizers and applied evenly to the soil before sowing or during the growth period. For foliar spraying, a 0.1% - 0.2% solution can be prepared and sprayed on the leaves of plants, which is more effective in quickly supplementing boron for plants.
2. Wood Preservation: Prepare a solution with a concentration of 2% - 5% disodium octaborate tetrahydrate. The wood can be dipped into the solution for a certain period, usually 24 - 48 hours, depending on the thickness and type of the wood. For larger wooden structures, pressure - treatment methods can also be used to ensure the full penetration of the preservative into the wood.
3. Glass and Ceramics: It is added to the raw material mixture according to the formula requirements, usually accounting for 0.5% - 2% of the total mass of the raw materials. Then, the mixture is melted and processed according to the normal production process.
1. Agricultural Case: In a large - scale apple orchard in a certain area, due to boron deficiency in the soil, the apple trees showed symptoms such as small fruits, poor fruit setting rate, and weak growth. After applying disodium octaborate tetrahydrate as a boron fertilizer, with a soil application of 1.5 kg per acre and foliar spraying of a 0.15% solution during the flowering and fruit - setting periods, the next year, the fruit setting rate of apple trees increased by 20%, the average fruit size increased by 15%, and the overall yield increased by 18%.
2. Wood Preservation Case: A wooden deck by the seaside was severely damaged by termites and fungi within a few years of construction. After treatment with a 3% disodium octaborate tetrahydrate solution using the dipping method, the deck has been in good condition for more than 5 years without any signs of decay or insect damage.
3. Glass Production Case: A glass factory added disodium octaborate tetrahydrate as a fluxing agent to its production formula, accounting for 1% of the total raw material mass. As a result, the melting temperature of the glass raw materials was reduced by about 50°C, the energy consumption per unit of glass production decreased by 12%, and the transparency and strength of the glass products were significantly improved.
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