Al2O3.2SiO2.2H2O  General purpose kaolin. Much larger particle size than ball clay or bentonite so often used together to make a good cross section of particle sizes imparting enhanced working properties. Kaolin speeds up casting rates in slurry bodies and drying rates in all bodies. Low plasticity and so is usually used (up to 50%) in combination with ball clays and other plasticisers. It is the most common glaze suspender. Glass jar is for illustration purposes only.