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EPK : 50 Pound Bag : Bulk Edgar Plastic Kaolin Clay

EPK: Edgar Plastic Kaolin 50 Pound Bag
EPK : 50 Pound Bag : Edgar Plastic Kaolin Clay

EPK : 50 Pound Bag : Edgar Plastic Kaolin Clay
Our Price: $25.50
Item Class Raw Materials

Product Code:


EPK Edgar Plastic Kaolin:

Edgar Plastic Kaolin, commonly known as EPK , is possibly the most common material in the ceramics industry. It is used in pottery glaze formulas which call for kaolin, and many moist clay porcelain pottery clay recipes.
It is a unique, high quality, water washed, ceramic kaolin which offers very white fired color, unusually good forming characteristics and high green strength.
In glazes, EPK offers excellent suspension capabilities and uncommon cleanliness.

At Sheffield Pottery we offer small quantities of kaolin for studios and we offer bulk pricing discounts up to 26,000 pounds on EPK kaolin for large scale needs such as white-ware production or cosmetics. This clay is a fine dry powder.

EPK Typical Analysis

Chemical Analysis:

SiO 2




Al 203




Fe 2O3


Na 2O


TiO 2


K 20


P 205




Mineral Content (X-Ray Diffraction):

Kaolinite (Al 203, 2SiO2, 2H20) - 97%

Screen Residue(Water washed through screen):

Pellet (Prill): .339 +325 mesh

Airfloated: .245 +325 mesh

Specific Surface Area (m2/g):


Median Particle Size (Microns):


Free Moisture:

Pellet (Prill) 3.0%

Airfloated 1.0%

EPK Ceramic Properties

pH (10% Solids-Wt.):



10,000 CPS @ 35% solids (wt.)

Water of Plasticity:


Dry Modulus of Rapture

300 psi

Linear Dry Shrinkage:


Fired Shrinkage Cone 11: (1315oC)


Absorption - Cone 11: (1315oC)


Cation Exchange Capacity (Methylene Blue Index):

4.5 meq./ 100 grams

Fired Color (100% Clay, Cone 11):


EPK Casting Properties



Type of Cast:


Water Retention:


The information and data contained herein are believed to be accurate, but the manufacturer makes no warranty with respect thereto and disclaims responsibility for reliance thereon. This data relates only to the specific material described herein, and does not relate to use in connection with any other materials or in any process.

Edgar Minerals, Inc. makes no warranties, express or implied, concerning this product. No warranty of fitness for any particular purpose is made and we assume no responsibility whatever for any use of this product. This product should be used by properly trained personnel, and in compliance with applicable health and safety laws and regulations.

WARNING:The product contains free Silica (Quartz). Repeated and prolonged inhalation of dust in excess of TLV-TWA may cause delayed lung injury (Silicosis). Follow applicable OSHA, MSHA, or NIOSH standards for Crystalline Silica (Quartz), IARC has classified Crystalline Silica in Group 2A of Probable Carcinogens based on limited evidence for the carcinogenicity of Crystalline Silica to humans- The National Toxicology Program has listed crystalline silica (respirable) as a substance which may reasonably be anticipated to be a carcinogen.

Edgar Plastic Kaolin, also known as EPK, is a type of kaolin clay that is mined from a deposit in Edgar, Florida. This clay is unique in that it is a secondary kaolin, meaning that it was formed from the weathering of primary kaolin deposits.

EPK is a white, fine-grained dry clay that is known for its high plasticity and excellent casting properties. It is often used in ceramic and porcelain production, as well as in the manufacturing of white ware and sanitary ware.

One of the key characteristics of EPK is its high brightness and low iron content. This gives it a pure white color, making it a popular choice for use in the production of high-quality ceramics and porcelain.

In addition to its use in ceramics and porcelain production, EPK is also used in the manufacturing of paper, paint, and rubber products. Its fine particle size and high brightness make it an ideal filler for these types of products.

The mining and processing of EPK is a complex process that involves the use of various types of equipment. The clay is first extracted from the ground and then transported to a processing plant where it is washed, screened, and separated according to particle size.

Overall, EPK is a versatile and high-quality clay that is used in a variety of industrial applications. Its unique properties make it an ideal choice for use in the production of ceramics, porcelain, and a wide range of other products.

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