Chemical Analysis 
CaC0399.0%
MgC030.20%
Al2030.065
Si02Less than 0.1%
LeadLess than 0.80 ppm
ArsenicLess than 0.2 ppm
Heavy MetalsLess than 20 ppm
FluorideLess than 50 ppm
Physical Specifications 
Specific Gravity2.71
Refractive Index1.65
Moisture %Less than 0.3
pH9.5
LOI @ 1050 degrees C44.0
Asbestosnil
Median Particle Size (microns)4.5-6.0
@ 90% finer than20 micron by Sedigraph
@ 10% finer than1.8 micron by Sedigraph
Dry Brightness - Photovolt Hunter L92+
Oil Absorption (ASTM D 281)15
Loose Bulk Density: (lbs/ft3)36
Tapped Density: (lbs/ft3)87
Hegman Fineness ASTM D 12103

Packing: 50 lbs Paper Bags

Origin: USA