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Lime powder, also known as calcium hydroxide or hydrated lime, is a white powder produced by the hydration of quicklime. It is primarily composed of calcium oxide and is commonly used as a pH adjuster in various water treatment processes. When added to water, lime powder increases the pH level, helping to neutralize acidity and improve water quality.
| Chemical formula | Ca(OH)2 |
| Purity | Typically 90% or higher |
| Particle size | Fine powder, typically 100 mesh or finer |
| Bulk density | Approximately 0.5 to 0.8 g/cm³ |
| Solubility in water | Slightly soluble, approximately 1.85 g/L at 20°C |
When selecting lime powder, consider the required purity level and specific applications, as different processes may require different grades. It is also important to specify the desired particle size for optimal performance in water treatment. Buyers should inquire about certifications and ensure that the product meets local environmental regulations. Quantities should be based on the scale of the treatment process.
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Lime powder is primarily used for pH adjustment in water treatment and various industrial applications.
While lime powder is generally safe, it can cause skin and eye irritation; proper safety measures should be taken.
Lime powder should be stored in a cool, dry place in a tightly sealed container to prevent moisture absorption.
Yes, lime powder is often used in drinking water treatment to adjust pH and improve water quality.
Dosage varies based on water quality; typically, it ranges from a few milligrams to several grams per liter.
When used responsibly, lime powder has a low environmental impact, but excessive use can lead to increased alkalinity.