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Hydrophobic Sand

Hydrophobic Sand, also known as magic sand, is mined silica sand coated with tiny particles of pure silica exposed to or trimethylhydroxysilane, (CH₃)₃SiOH. Trimethylhydroxysilane treatment alters the exteriors of the sand grains to make them insoluble in water or hydrophobic.
This material can be sculpted in water.

Custom colors are available with a minimum order requirement of 300 lbs.
Typical Applications

Filter sand is used as a resin filler, in houseplant potting soil, for sculpting, magic acts, and illusions, as well as in classroom kits and educational innovations.

Packaging Options

1 lb. bags, 5 lb. pails, 50 lb. multi-ply paper bags


Hydrophobic Sand TSCA (SARA Title III) Status: Listed
For further information, please call the EPA Office of Chemical Safety and Pollution Prevention (OCSPP) at 202-564-2902.
Silica Sand CAS Number: 14808-60-7; Trimethylhydroxysilane CAS Number: 1066-40-6

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