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Caustic soda, also known as sodium hydroxide, is a highly versatile chemical used primarily as a pH adjuster in various water treatment processes. It is a white, solid substance that is hygroscopic and highly soluble in water, producing a strongly alkaline solution. Caustic soda is typically produced through the electrolysis of sodium chloride solution, resulting in a product that is essential for neutralizing acids and maintaining optimal pH levels in water systems.
| Chemical formula | NaOH |
| Purity | Typically 98% or higher |
| Physical form | Solid (flakes, pellets) or liquid |
| Density | Approximately 2.13 g/cm³ for solid form |
| Solubility | Soluble in water, producing heat |
When selecting caustic soda, consider the required purity level and physical form based on your specific application. It is important to specify the quantity needed, as bulk orders may be available at discounted rates. Additionally, inquire about certifications and compliance with local regulations, especially if the product will be used in food or water applications.
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It is primarily used for pH adjustment in water treatment, as well as in various industrial processes.
Caustic soda is highly corrosive and should be handled with appropriate safety precautions, including gloves and eye protection.
It is available in solid form (flakes or pellets) and as a concentrated liquid solution.
Yes, but it must meet specific food-grade standards and regulations.
Always use personal protective equipment and ensure proper ventilation when handling.
Store in a cool, dry place away from incompatible materials and in tightly sealed containers.