Water TreatmentCorrosion Inhibitors in Water Treatment

Corrosion Inhibitors in Water Treatment

A S Harrison & Co offer various leading edge corrosion inhibitors solutions to help asset managers and engineers win the fight against corrosion.

VpCI® for Industry’s Toughest Corrosion Challenges

Cortec® VpCI® technology is a revolutionary, environmentally safe and cost-effective option for corrosion protection. It is a volatile, amine-based corrosion inhibitor which provides superior protection compared to traditional direct contact inhibitors.

How Does VpCI® Protect Against Corrosion?

VpCI® forms a mono-molecular layer which protects against both anodic and cathodic corrosion. VpCI® will provide protection to a wide range of metals and will protect metals even if they are not in direct contact with the product.

Use of VpCI® can result in significant cost saving as it eliminates labour associated with regular corrosion maintenance or the need for highly specialised alloys.

VpCI Uses

VpCI® protection is most effective when used in confined spaces, such as in electronic and electrical control housings or wrapped in plastic packages. It can also be embedded into coatings where the coating acts to confine the VpCI® chemical. Within reasonable limits, VpCI® provides self-replenishing protection.

VpCI® corrosion inhibitors are available in wide array of different forms such a powders, liquids, plastics and many more to suit every application.


VpCI® is environmentally friendly and safe option for corrosion prevention. These products offer excellent protection while minimising the impact on the environment.

  • No or very low volatile organic compounds – VOC’s
  • No carcinogenic compounds
  • No chromates, borates, or heavy metals
  • Nitrate Free
  • Non-toxic and FDA approved products
  • Organic and biodegradable formulation available
  • Electronics
  • Process additives
  • Metalworking
  • Coatings
  • Packaging & plastics
  • Water treatment
  • Surface preparation
  • Lubricants & automotive
  • Powders

Steel Wool Corrosion Time lapse by Cortec®

Demo of VpCI® in tap water. VpCI® molecules absorb onto metals providing multiphase protection.

Product NameProduct
Product FeaturesProduct Applications
Cortec Cooling Loop GatorVapour phase Corrosion Inhibitor (VpCI®)Powder packaged in polyvinyl alcohol (PVA) watersoluble bags.The VpCI®. These inhibitors form a strong molecular layer on the metal that protects in both the liquid and vapour phase.• Developed for seasonal, short-term, or longterm layup, Cooling Loop Gator® protects enclosed spaces for up to 12 months.
• Once the bag and powder dissolve, the Vapour phase Corrosion Inhibitors adsorb on all metal surfaces, reaching recessed areas and interior cavities.
Boiler DragonVapour phase Corrosion Inhibitor (VpCI®)Ready-to-use waterborne multi-metal fogging fluid designed for use in the dry layup of large boilers and steam components for short- and long-term preservation.• Alternative to traditional boiler dry layup options such as desiccants, quicklime, or nitrogen blankets. • Boiler systems preserved by the Boiler Dragon™ can be returned to service quickly by simply filling the boiler with makeup water.
• The vapour-phase properties of the molecules provide continuous protection throughout the boiler spaces when properly applied.
• Direct application to every metal surface is not required.
M-95Water soluble corrosion inhibitorVery low foaming, water soluble corrosion inhibitor concentrate. It provides corrosion protection for steel, copper, brass, magnesium, aluminum, bronze, galvanised steel, and other ferrous and non-ferrous metals and their alloys. M-95 prevents corrosion in both phases: contact and vapour.• Industrial cooling towers
• Water based lubricants Aerosol formulations
• Treating baths for copper and copper alloys
• Radiator fluid additive
•Anti-freeze ethylene glycol/water based formulations.
S-69Organic liquid additiveAn all organic liquid additive formulation designed for low level concentrations which contain a unique combination of contact and vapour phase inhibitors. Effective for open and closed loop cooling systems.• Designed to replace chromates, nitrites, phosphonates, and other types of restricted corrosion inhibitors.
M-615Corrosion inhibitor and anti-scalantProtects against pitting whilst reducing maintenance time and costs. It very economical at low dosage and will extends boiler system life. Provides protection to ferrous metals, aluminum alloys and galvanised steel.• Improves heat transfer and extends equipment life by keeping the system free from corrosion and insulating deposits.
• Heater exchanger fluids.
• Liquid form delivery for easy, direct application to system without premixing.
• Low and medium pressure boilers
• Can be combined with other boiler additives
M-640/LLiquid corrosion inhibiting additiveProtects ferrous and non-ferrous metals from corrosive contaminants and an excellent replacement for silicates and phosphate/nitritebased/ amine compounds (powder option available).• For water and glycol-based heat exchange fluids.
• Does not contain ammonium bifluoride or hydrofluoric acid.• Effectively dissolves and chelates iron, aluminum and other metal oxides and hydroxides. • Formulated to prevent calcium fluoride scaling during use.
• Stabilised fluoride formulation does not cause chemical burns.
M-645Corrosion inhibitor additiveF M-645 is a highly surface active concentrate, which will displace water containing chlorides from the metal surface, is then adsorbed forming an oily protective film on the metal. This film is the most uniform when it is applied in conjunction with an oxygen scavenger.• Corrosion induced by seawater or brine.
• Ballast tanks containing seawater
• Hydrotesting of pipelines / vessels
S-8non-toxic “green” filming corrosion inhibitorSodium salt of fatty amino acids and amino alcohol are the active ingredients and provides excellent corrosion inhibition. Outperforms other “green” inhibitors due to its stability and ability to form a thin protective layer that will not cause sticky deposits.• Compatible with the majority of water chemistries.
• Can be used in very low concentration and still provide complete corrosion protection in water, its vapors and their interface.
• Designed for canned food protection.
S-14Biobased anti-scaling inhibitorNon-toxic, non-hazardous, and readily biodegradable water soluble powder. Compared to other antiscalants like phosphonates and poly acrylates, S-14 Bio Powder does not attack steel or aluminum and galvanised steel.• Cooling towers and other open-loop recirculating cooling systems.
S-15Corrosion inhibitor additiveGases dissolved in water like oxygen and carbon dioxide lead to corrosion. Oxygen causes pitting and rusting and carbon dioxide causes acid corrosion.• Minimises corrosion and deposits in high and medium pressure boilers and condensate lines.
• Boiler treatment program for replacement of Hydrazine Programs.
VpCI®-105Vapour phase Corrosion Inhibitor (VpCI®)The device emits Vapour phase Corrosion Inhibitors, which form a protective coating on all metal surfaces. It is a patented plastic emitter with a breathable Tyvek®* membrane through which the corrosion inhibitor is released.• Provides protection for metal components and parts enclosed in non- ventilated control boxes, cabinets, or tool boxes.
• It provides long-term protection against corrosion even in the presence of adverse conditions including salt, moisture, airborne contaminants, H2S, SO2, NH3, and others.

All products are designed for multi metal protection covering: Carbon Steel, Stainless, Galvanised, Aluminium, Brass, Copper, Bronze.

This is a snapshot of the chemicals that A S Harrison have available, please contact an A S Harrison & Co representative for a discussion on the appropriate chemical for your application.


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