PERLITE – EXFOLIATED
PHYSICAL PROPERTIES
APPEARANCE Dull White.
SPECIFIC GRAVITY 2.34.
DRY LOOSE DENSITY (gms/cc) 0.115 to 0.140.
WET CAKE DENSITY [gms/cc (max)] 0.232.
% MOISTURE AT 1050 C. (max) 1.5.
WATER ABSORPTION (as % by wt of DICAMOL) 270 to 300.
OIL ABSORPTION (as % by wt of DICAMOL) 240 to 270.
HYGROSCOPICITY Nil.
FLOW RATIO (414 = 100) 650.
MEAN PARTICLE SIZE (Microns) 8.0.
% RETAINED ON 140 MESH (Max.) 6.0
% RETAINED ON 325 MESH (Max.) 40.0.
CHEMICAL ANALYSIS
SILICON DIOXIDE % 71 to 76.
ALUMINIUM OXIDE % 10 to 14.
FERRIC OXIDE % (Max) 0.40.
FERROUS OXIDE % (Max) 0.50.
CALCIUM OXIDE % 0.50.
MAGNESIUM OXIDE % 0.20.
SODIUM OXIDE % 3 to 4.
POTASSIUM OXIDE % 4 to 5.
ORGANIC MATTER % Nil.
pH SLURRY 10% IN WATER 6 to 9.
LOSS ON IGNITION % (Max) 1.5.
ACID AND WATER SOLUBILITY
SOLUBILITY IS NEGLIGIBLE IN WATER AND WEAK ACIDS. SOMEWHAT SOLUBLE IN STRONG ACIDS/ALKALI AT HIGH TEMPERATURE.
NOTE : - PERLITE BEING NATURAL MINERAL PRODUCT, THE ABOVE
SPECIFICATIONS ARE SUBJECT TO CHANGE. HOWEVER, THE
CHANGE, USUALLY DOES NOT AFFECT FILTRATION PERFORMANCE.
