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Andalusite (Al₂iO₅)

Andalusite is an aluminum silicate mineral that is a polymorph with two other minerals; kyanite and sillimanite.
SiO₂= 56 – 75.0%,
Al₂O₃=19.3 – 39.68%

Purities are available from as high of a typical purity of 99.99% down to low purity powder. Typically 94 to 98.5%
Physical Properties
  • Outstanding creep resistance
  • Very good refractoriness under load (RUL)
  • Low thermal expansion
  • Low thermal conductivity
  • Good chemical stability
  • Excellent thermo-mechanical stability
  • Excellent thermal shock resistance
  • Oxidation resistance
Typical Applications

Andalusite is used in manufacturing spark plugs, board and ceiling tile coatings, pyrometer tubes, and chemical labware. Andalusite is also a refractory in furnaces, kilns, and other industrial processes.

Packaging Options

Jars, pails, drums, multi-ply paper bags, and bulk bags


Andalusite TSCA (SARA Title III) Status: Not Listed
Please contact the EPA Office of Chemical Safety and Pollution Prevention (OCSPP) at 202-564-2902.\
Andalusite CAS Number: 1332-58-7

Sustainable Qualities

Andalusite is a naturally occurring mineral commonly used in high-temperature applications such as refractory materials. Its sustainability comes from its abundance in nature and its non-toxic nature. Andalusite is also a highly durable material that can withstand high temperatures and harsh environments, making it ideal for use in a wide range of applications. Its ability to be recycled and reused further contributes to its sustainability and potential for use in a circular economy.

In addition, the production of Andalusite does not require high energy inputs or toxic chemicals, making it an environmentally friendly alternative to synthetic materials. Its use in refractory materials also contributes to energy efficiency by helping to reduce heat loss and increase the lifespan of industrial furnaces and kilns, further promoting sustainable practices in the industry.

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  • Powder 10 X 100 Mesh
  • Powder 200 Mesh X Down
  • Powder 325 Mesh X Down


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