ABS | Ammonium Bisulfite Solution


The effective and flexible choice. 


(Text needs to be revised to be an overview of ABS)

ABS is used in de-chlorination of water.

It also has uses as an oxygen scavenger in the oil and gas industry, and various applications in the food industry including sugar beet processing and the caramel coloring process.

When it comes to effective liquid sulfur-based mining reagents, moleko provides high quality products and technical expertise to support your operations in-plant. ABS is an aqueous ammonium bisulfite solution that effectively neutralizes cyanide in the Inco SO2/Air process.

  • Field Tested and Proven - ABS is currently in use in numerous mines
  • Ease of Handling - shipped as a liquid in bulk; no need to dissolve reagent prior to use
  • High Strength - Up to 45% SO2 content
  • Mining

    ABS is an aqueous ammonium bisulfite solution that effectively neutralizes cyanide in the Inco SO2/Air process. 

    It does this through a chemical reaction known as an oxidation-reduction (redox) reaction.

    Cyanide ions (CN-) are reduced to cyanate ions (OCN-) by ammonium bisulfite. Cyanate is much less toxic than cyanide and will decompose to form carbon dioxide and nitrogen, which are harmless.

  • Water Treatment

    ABS is a reducing agent that can effectively neutralize or reduce chlorine compounds in water.

    Chlorine is often added to water supplies as a disinfectant to kill bacteria and other microorganisms. However, residual chlorine in the water can have adverse effects, such as causing health issues in humans and harming aquatic life. Thus, it is often necessary to dechlorinate the water before it is used or discharged.

  • Food Processing

    Liquid bisulfite food additives meet strict FDA guidelines in support of your critical food processing requirements.

    Applications in the food industry include sugar beet processing, the caramel coloring process and other wet corn milling processes.

  • Oil & Gas

    ABS is an oxygen scavenger, meaning it removes oxygen from a given environment.

    In the oil and gas industry, it is very important to control the level of oxygen in various operations, because oxygen can cause corrosion of equipment, lead to the growth of certain unwanted bacteria, and even contribute to the formation of dangerous conditions.

    ABS is used to keep equipment safe and operations running smoothly by preventing corrosion and microbial growth.

Inspection Pipeline Plants

WHY USE moleko ABS in Mining?

  • Flexible - Can be applied to the treatment of both cyanide solutions and slurries
  • Fast and Effective - Can achieve low total cyanide (CN) in a single stage
  • Proven - Over 120 applications since 1980
  • Robust - Can treat solutions with high soluble metal concentrations
  • Thorough - Will oxidize free cyanide and all cyanide complexed with copper, nickel, zinc, silver and cadmium
  • Safe - No mixing of dry reagents, or production/use of Caro’s acid
  • Service - We have in-house technical expertise to help you get the most from ABS; we can and will support your conversion with field support in mill
  • Strong - Has significantly more SO2 available than alternative solutions

ABS® | Ammonium Bisulfite Solution

Mining Brochure

Safety Data Sheet