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Tektamer 38 Biocide

Kills bacteria, fungus in clays and glazes

Calgon Corp., Specialty Chemicals Group, Box 1346, Pittsburgh, PA 15230

This is a powdered or liquid material which can be added to clay slurries and bodies to prevent the growth of fungus and bacteria which affect plasticity and produce unpleasant odors. When glazes contain organic gums, for example, this can become an issue. Products like this can affect glaze viscosity over time so their may be a need to adjust with a flocculant or deflocculant. In worst case scenarios, glazes can thin and settle in the bucket.

They provide documentation on:
-Toxicology in rats, dogs, rabbits, etc. Indicates the material to be quite safe.
-A paper showing its performance as an antifungal in paint.
-Impact on the environment
-Safety data sheet (ingestion and eye irritant)

The material is described as a broad spectrum preservative for adhesives, paint, cements, pigments, metal working fluids, inks, waxes, and polishes. Tektamer 38 A.D. is a 25% aqueous dispersion of Tektamer 38. Tektamer 38 L.V. is a low viscosity 25% solution.

It controls bacteria, fungi, yeast and algae. It remains stable under normal conditions, and remains active for extended periods in end use products. It is stable in storage for 3+ years. It is non-ionic and therefore compatible with most formulations. It works in pH range 2.0-9.5 and requires no unusual handling precautions. It does not contain mercury, tin, barium, arsenic or other heavy metals, no formaldehyde, contributes no odor, does not require warning label on end use product, does not loose effectiveness after repeated freeze-thaw.

See also Vancide, Bleach. Formaldehyde are other options Dowicil 75.


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By Tony Hansen

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