Saline corrosive protection

  • Technical Articles
  • Nov 01,17
Often it is necessary to use corrosive seawater, brine solutions, or deicing chemicals for municipal and industrial applications, but these can create a major problem for any metals in the system. Cortec offers additives to combat these highly corrosive fluids containing salts.
Saline corrosive protection

Cortec combats corrosive effects of deicing salts and fluids with new VpCI  additives.
 
Often it is necessary to use corrosive seawater, brine solutions, or deicing chemicals for municipal and industrial applications, but these can create a major problem for any metals in the system. Cortec offers additives to combat these highly corrosive fluids containing salts. VpCI additives form a thin molecular corrosion inhibiting layer that adsorbs on the surface of the metal, displacing existing water, chlorides, or other corrosive contaminants on the surface.
 
These additives can be used in many applications where a high concentration of chlorides raises the risk of corrosion such as ballast tanks, deicing fluids, distillation towers, cooling towers and hydrostatic testing with seawater.
 
Harsh marine or winter environments regularly expose boats, vehicles, or equipment to heavy doses of chlorides, either from naturally salty sea spray, or from road spray that contains deicing chemicals for winter road safety. 
This results in salt buildup on the vehicle body or equipment surface. If left untouched, salt buildup leads to heavier corrosion, rust, and vehicle deterioration. It is important to clean these chlorides off as soon as possible to minimise potential corrosion.
 
Cortec’s offers a more effective way to do this with FlashCorr VpCI, a wash water additive that plays an important role in removing salt deposits from vehicle and equipment surfaces. FlashCorr VpCI has a unique ability to neutralise and remove salt deposits such as sodium chloride and various deicing salts. It also protects against the risk of flash rust from washing. FlashCorr VpCI is highly effective, non-toxic, and environmentally safe.
 
'VpCI additives for deicing salts and fluids' also offers protection for vehicles or equipment at risk for corrosion from the direct use of seawater or high salt brine solutions. In winter locations, where heavy use of deicing salts is common, Cortec additive M-605 can be easily used to inhibit corrosion by adding at a low dose directly to the deicing salt or fluid. It is environmentally friendly, non-toxic, nitrite-, chromate-, and phosphate-free, protecting multiple metal types.
 
Specialised versions of M-605 target corrosion caused by specific deicing fluids: M-605 is a powder additive designed for protection against NaCl based deicers; M-605 L is a liquid additive designed for protection against MgCl2 based deicers; and M-605 PS is a powder additive designed for protection against CaCL2 based deicers.
 
These additives conform to Pacific Northwest States (PNS) Department of Transportation requirements for additives to deicers and pass their corrosion tests when added to a deicer at a concentration level of 5% by weight. M-605 PS is especially unique as a USDA certified biobased product that contains 98% USDA certified biobased content. It is a powder version especially effective in calcium-chloride- based deicers. VpCI additives for deicing fluids can also be used as an inhibitor to brines in closed loop cooling systems, or in fluids such as seawater where there is an especially high concentration of salt.
 
Seawater, deicing chemicals, and brine are necessary threats that perform useful functions but promote corrosion in the process. Cortec’s VpCI additives counteract these corrosive elements in a user-friendly and environmentally 
friendly manner.

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