TI-21 is a very low carbon content clay specifically designed for plastic forming methods. It has excellent oxidation qualities particularly for dense volume stoneware or vitreous ceramic pieces. The excellent plasticity provides outstanding jigger, ram pressing or hand throwing qualities to the formulation. The Fe2O3 and TiO2 content produces a cream white fired color for enhancing a stoneware appearance to the formula.

Typical Data Sheet
Shipping Point: Gleason, Tennessee
Crude Color Light Grey
Dry Modulus of Rupture (psi)* 515 
Wet Sieve Residue, +200 mesh (%) 0.69 
Water of Plasticity (%) 35 
Linear Drying Shrinkage (%) 7.0
Soluble Sulfates (ppm) 200
Filtration (ml) 26 
Specific Surface Area (m2/g) 21.6
CEC/MBI (meq/100 ml) 8.3
pH 6.2
Particle Size (% less than)
5 Micron
1 Micron
.5 Micron 

Median Particle Diameter (Micron) 0.44 

*50% clay/50% flint, cast bars

Silicon Dioxide (SiO2) 58.52
Aluminum Oxide (Al2O3) 27.94
Iron (Ferric) Oxide (Fe2O3) 1.07 
Titanium Dioxide (TiO2) 2.14
Calcium Oxide (CaO) 0.09 
Magnesium Oxide (MgO) 0.24 
Sodium Oxide (Na2O) 0.06 
Potassium Oxide (K2O) 0.34 
Loss on Ignition 9.56


FIRED PROPERTIES Cone 04 Cone 3 Cone 11
Linear Fired Shrinkage (%) 5.2 6.4 8.1
Absorption (%) 15.5 10.6 3.8


NOTICE: All data given and statements and recommendations made herein are based upon our research and are believed to be accurate typical data. However, no guarantee of their accuracy is made or implied. Our products are sold on the condition that the user will evaluate them himself, as well as our formulas and recommendations, to determine their suitability for his own purposes before adoption on a commercial scale. Also, statements as to the use of our products are not to be construed for their use in the infringement of any patent.

Warning: This clay product contains quartz which may cause delayed respiratory disease (silicosis) if inhaled over a prolonged period of time. Avoid breathing dust. Use NIOSH/MSHA approved respirators where TLV for crystalline quartz is exceeded. IARC Monograph Volume 68, 1997 concludes that the respirable fraction of crystalline quartz, causes cancer in humans. Refer to MSDS for complete details.