Perlite P321 Through Grade

Applications	Pipe and duct insulations Fireplace slabbing Lightweight concrete roof and floor screeds Shapes and castables Refractory applications Fireproof applications
Chemical Properties	Perlite PCLG is an aluminium silicate. Typical composition is: Silicon (SiO2) 73% Aluminium (Al2O3) 15% Iron (Fe2O3) 2% Sodium (Na2O) 3% Potassium (K2O) 5% Calcium (CaO) + Magnesium (MgO) 1% Others 1% pH 6.5 - 7.5 Organic Matter nil Moisture Content (when packed) nil
Physical Properties	Expanded Perlite P321 is white with a nominal particle size of 0.15 - 6.0 mm. Refractive Index 1.5 Free Moisture (max) 0.5% pH of Water Slurry 6.5 - 8.0 Softening Point 890 - 1100oC Fushion Point 1280 - 1350oC Specific Heat 837J/kgK (0.2 cal/gc) Thermal Conductivity 0.05 w/mC
Grading Specification	The bulk density of Perlite PCLG is 90 - 120 kg/m3 Sieve Size % by weight passing 4.75 90 - 100 2.40 50 - 80 1.20 10 - 30 600 micron 10 - 30 300 micron 5 - 20
Packaging	Perlite P321 is normally supplied in plastic sacks containing 100 litres (approximately 3.5ft3). Alternative packaging is available to order.
Health and Safety	Expanded Perlite P321 is a heat-processed, inorganic material and since no chemical changes occur it is considered non-reportable. However it is advisable to study the Perlite Material Safety Data Sheet compiled in accordance with COSHH/CHIP Regulations.