Vermiculite - 16 lb. Bag

Vermiculite is used by professional pool contractors, by large greenhouse growers, by industrial fireproofing manufacturers and applicators, by installers of insulation, by industrial manufacturers and commercial businesses.

Vermiculite is a member of the phyllosilicate group of minerals, resembling mica in appearance. It is found in various parts of the world, but currently the major mines are located in South Africa, China, Brazil, Zimbabwe, and the United States. The largest mine today is located in the Palabora region of North-Eastern Transvaal in South Africa. It's vermiculite is basically a hydrated phlogopite mica which has the remarkable ability to expand to many times its original volume when heated---a property known as exfoliation.

Commercially available vermiculites today are virtually free of any asbestos (like our South African vermiculite), or they contain only insignificant amounts similar to other products that are naturally occuring, mined, processed, and used throughout the industrial world today.  

Specifications:

• Color: Light to dark brown
• Shape: Accordion-shaped granule
• Bulk density (a): 64-160 kg/cu m 4-10 lb/cu ft.
• Moisture loss@ : 110 °C (230 °F): 4-10%
• pH (in water) : 6-9
• Combustibility: Non-combustible
• Sintering temperature: 1150-1250 °C 2100-2280 °F
• Fusion Point : 1200-1320 °C 2200-2400 °F
• Cation exchange capacity (b): 50-150 me/100g
• Specific heat: 0.84-1.08 kJ/kgK 0.20-0.26 kcal/kgK 0.20-0.26 Btu/lb F
• Waterholding capacity (a): 220-325% by wt 20-50% by vol