JSR International( India) Private Limited

Perlite is a naturally occurring volcanic glass that expands when heated, creating a lightweight and porous material. It is commonly used in gardening, horticulture, construction, and various industrial applications. Perlite specifications can vary depending on its intended use, but here are some general specifications:

1. Chemical Composition:

   • Silicon Dioxide (SiO2): Typically around 70-75%
   • Aluminum Oxide (Al2O3): Typically around 12-15%
   • Sodium Oxide (Na2O): Typically less than 4%
   • Potassium Oxide (K2O): Typically less than 5%
   • Iron Oxide (Fe2O3): Typically less than 3%
   • Other trace elements in smaller quantities.

2. Physical Properties:

   • Particle Size: Perlite particles are typically small and vary in size, with the majority falling in the range of 2 to 6 millimeters.
   • Density: Perlite is lightweight, with a bulk density typically ranging from 50 to 150 kg/m³, depending on the grade and how it's processed.
   • Color: Perlite is usually white or gray, but it can also have a slightly pink, blue, or green tint.

3. Expansion Ratio: Perlite can expand up to 20 times its original volume when heated to temperatures between 1600°F (871°C) and 1800°F (982°C). This expansion creates air pockets within the material, making it lightweight and highly insulating.

4. Moisture Content: Perlite should have low moisture content to prevent issues during handling and storage. Typically, perlite should have a moisture content of less than 0.5%.

5. pH Level: Perlite is generally pH-neutral, which makes it suitable for various applications.

6. Chemical Stability: Perlite is chemically inert, which means it does not react with most chemicals. This property makes it suitable for use in various chemical processes and as a soil amendment in gardening.

7. Heat Resistance: Perlite is highly heat-resistant and can withstand temperatures well above those typically encountered in gardening or construction applications.

8. Absorption and Water Retention: Perlite has excellent drainage properties and does not retain water, which makes it valuable for horticultural purposes to prevent root rot.

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