The product, 2 - phosphonobutane - 1,2,4 - tricarboxylic acid (PBTC) with the CAS number 37971 - 36 - 1, is known for its high - quality and comes at a good price. PBTC is a phosphorous - containing organic compound. It appears as a clear to slightly yellowish liquid under normal conditions. Its chemical formula is C₇H₁₃O₉P, and it has a molecular weight of approximately 272.14 g/mol. PBTC has excellent thermal stability and hydrolysis resistance, which makes it suitable for various applications in different environments.
PBTC has a wide range of applications. In the field of water treatment, it is commonly used as a scale inhibitor and corrosion inhibitor. It can effectively prevent the formation of calcium carbonate, calcium sulfate, and other scale deposits in water systems, such as cooling water systems, boilers, and reverse osmosis membranes. By reducing scale formation, it helps to maintain the efficiency of the equipment and extends its service life. In the detergent industry, PBTC can be used as a builder. It can enhance the cleaning ability of detergents by chelating metal ions, such as calcium and magnesium ions, in water, which improves the solubility of dirt and enhances the overall cleaning effect. Additionally, PBTC is also used in the oilfield industry. It can be added to drilling fluids to prevent the precipitation of scale and corrosion of pipes, ensuring the normal operation of oilfield equipment.
When using PBTC in water treatment, the dosage needs to be determined according to the water quality and the specific requirements of the system. Generally, for cooling water systems, the recommended dosage is 5 - 20 mg/L. It can be added directly to the water system through a dosing pump. Before adding, it is necessary to ensure that the dosing equipment is clean and in good working condition. When used as a builder in detergents, PBTC can be mixed with other detergent ingredients during the production process. The proportion should be adjusted according to the type and performance requirements of the detergent. In the oilfield industry, it can be added to drilling fluids in a similar way, and the dosage also depends on the specific situation of the oilfield, such as well depth, temperature, and water quality.
Case 1: A large - scale chemical plant has a cooling water system. Before using PBTC, the system often had problems with scale formation, which led to a decrease in heat transfer efficiency and an increase in energy consumption. After adding PBTC at a dosage of 15 mg/L, the formation of scale was effectively controlled. The heat transfer efficiency of the cooling water system was improved by about 20%, and the energy consumption was reduced by approximately 15%. This not only saved energy costs but also reduced the frequency of equipment maintenance. Case 2: A detergent factory developed a new type of laundry detergent. By adding an appropriate amount of PBTC as a builder, the detergent showed better cleaning performance on hard - water stains. Compared with the previous formula without PBTC, the new detergent could remove stubborn stains more effectively, and the sales volume increased by 10% within three months after its launch. Case 3: An oilfield company was facing problems with scale deposition and corrosion in its drilling pipes. After adding PBTC to the drilling fluids at a suitable dosage, the scale on the pipes was significantly reduced, and the corrosion rate was also decreased. This extended the service life of the drilling pipes and improved the efficiency of oil extraction.
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