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Remotox® for Heavy Metal Removal from Wastewater

Remotox® is a water-soluble liquid that consists of multiple sulfur compounds, which strongly bond to heavy metals in water. The metal sulfides formed have a very low solubility and persist as stable solids, which allows for a more environmentally sound disposal. 


Product Advantages:

Product Features:

  • Not DOT regulated.
  • Its residues are inert and non-toxic.
  • Unlike dithiocarbamate or its related salts, it does not contain or release carbon disulfide.
  • Compared to other sulfides, it provides more stability in acidic medium. It presents a lower H2S exposure potential, and is also less malodorous.
  • Remotox® is a strong, yet relatively inexpensive precipitant.

Remotox® is designed to bring practical, and cost-effective advantages to wastewater treatment, while ensuring discharge limits on heavy metals are consistently met. Please contact us today to request a complimentary sample for your evaluation.


When mixed with water, Remotox® decomposes to form bisulfide, aqueous hydrogen sulfide and other sulfur compounds. Most heavy metal ions are precipitated as metal sulfides by these breakdown products. Metal sulfides are much less soluble than metal hydroxides. Metal hydroxides change solubility with changes in pH. Metal sulfides remain insoluble within a wide pH range. See Solubility of Metal Hydroxides and Sulfides as a Function of pH. In the case of chromium, Remotox® reduces hexavalent chromium to trivalent state which then precipitates as chromium hydroxide in a one-step reaction.


While effective treatment can be achieved over a wide pH range, best results are typically obtained within water system pH 7-10. Ensuring adequate contact time and thorough mixing is critical to successful treatment. Dewatering the resulting precipitate can be expedited by employing an anionic flocculant.


For technical assistance, product samples or pricing information, please contact us at 623-328-5175 or by email at info@grauschemicals.com.