（CHEMICAL ANALYSIS）:

SIO2……………………………………………………49-52%

CaO……………………………………………………39-42%

AlO3……………………………………………………0.4-0.5%

MgO……………………………………………………0.5-0.7%

Fe2O3……………………………………………………0.3-0.4%

Na2O-K2O……………………………………………… 0.9-0.1%

Lgnition loss(mainly H2O) ………………5-9%