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Perlite Handbook

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Perlite Lightweight Ultrafine Fillers
Prepared by: The Perlite Institute

TYPICAL PRODUCT DATA
Color: White
G.E. Brightness, %: 70-80
Refractive Index: 1.47
Specific Gravity: 2.2-2.4
Apparent Bulk Density, lb/ft3: 5-15
gm/cc: 0.08-0.24
PH: neutral
Oil Absorbtion: 120-240*
Softening Point, deg.F: 1800
deg.C: 980
Moisture, %: <1.0
Water Absorption: 195-350*
Ignition Loss, 3hr 1700 deg.F (930deg.C) 1.5%max.**
Mean Particle Diameter, microns as small as 10***
*Lbs (kg) oil or water/100 lbs.(kgs)
** Due to residual combined water
***Varies with product

Technical data given herein are from sources considered reliable, but no guarantee of accuracy can be made or liability assumed.  Your supplier may be able to provide you with more precise data.  Certain compositions or processes involving perlite may be the subject of patents.

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Updated:
05-Oct-2001

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