Corrosion Inhibitors

A group of specialized non-foaming to low foaming water soluble corrosion inhibitors based on carboxylate and ester chemistry for use in alkaline systems. Each product is biodegradable, non-phenolic, phosphate free, hard water stable and is extremely effective at low concentrations. In some cases, these anionic corrosion inhibitors may also act as wetting agents and hydrotropes and are very cost effective.

DeCORE IMT-100LF

A low foaming 100% active modified carboxylate for use in alkaline systems only. Extremely effective at low concentrations in both ferrous and non-ferrous applications. The final use solution should contain concentrations of 0.25-1.00% by weight, to prevent corrosion. Concentrations above 0.5% by weight may cause staining on cast iron without enhancing corrosion inhibition. The use of DeCORE IMT-100LFas a corrosion inhibitor is complemented by its lubricating, wetting and spreading properties.

DeTROPE CA-100

As the name suggests, this product is an outstanding hydrotrope but is also considered our most effective corrosion inhibitor. This 100% active modified carboxylate exhibits a low quick breaking foam and is suggested for use in alkaline, water based systems. It is extremely effective at low concentrations and will not leave a solid or waxy residue on metal surfaces upon drying. The corrosion properties of DeTROPE CA-100 are synergized by its excellent wetting properties. It is not recommended for use in acid systems.

DeCORE BE-85

An 85% active borate ester which is almost colorless and is non-foaming. A corrosion inhibitor for ferrous and non-ferrous applications when used at a minimum concentration of 1% by weight. Suggested for use in aqueous alkaline systems where zero foam tolerance is required. Not for use in acid systems and may cause staining when used in connection with aluminum. DeCORE BE-85 is specifically recommended as a corrosion inhibitor since it does not enhance any additional surface activity.

DeCORE APCI-95

A very effective corrosion inhibitor for soft metals such as copper, brass, magnesium as well as aluminum, cast iron, steel and other ferrous and non-ferrous metals. This 95% active product is a non-foaming, modified carboxylate for use in neutral or alkaline, water based formulations. Suggested applications are synthetic cutting fluids, parts & metal cleaners, aerosol products, water-based paints and cooling tower additives. DeCORE APCI-95 is biodegradabe, non-phenolic and does not contain nitrites or chromates.

APPLICATIONS

Each one of the products are recommended for use as corrosion inhibitors and may be used in the following applications:

  • Water Based Aerosol Formulations
  • Drawing and Stamping Compounds
  • Powdered Metal Cleaners
  • Auto Radiators
  • Paints and Coatings
  • Cooling Towers
  • Aqueous Type Lubricants
  • Chain Lubricants
  • Concrete Forms
  • Synthetic and Semi- Synthetic Coolants and Cutting Fluids for Ferrous and Non-Ferrous Metals
  • Metal Brightening
  • Plating Baths

CAST IRON CHIP TEST

Shows results of 24 hour test using grade 35 cast iron chips tested in solution on filter paper. Each solution contained % by weight of corrosion inhibitor plus hard water containing (100 ppm as CaCo3 and 71 ppm as CaCl2) at room temperature.

Cast Iron Chip Test


A = CONTROL      B = DeCORE APCI-95 @ 1.00%      C = DeCORE IMT-100LF @ 1.00%      D = DeCORE BE-85 @ 1.00%     


SUBMERSION TEST

Figures 2, 3, and 4 indicate the results of submersion tests. The top half of the panels were submerged into a liquid made up of % by weight of corrosion inhibitor plus hard water containing (100 ppm as CaCo3 and 71 ppm as CaCl2) at room temperature. The other half of the panel was exposed to the vapor phase in closed containers.

Fig. 2  Panels are hot dipped Zn/Fe galvanized (unpolished) at 90gms. and tested for one (1) yr.

Fig. 3  Indicates two (2) year results using bare aluminum at 0.063 inch thickness.

Fig. 4  A Two (2) year result on ground 1/2 hard, low carbon cold rolled steel panels @ 0.063 inch thickness.

figure 2   figure 3

Fig. 2      A = CONTROL      B = DeCORE IMT-100LF @0.50%      C = DeTROPE CA-100 @ 1.00%      D = DeCORE BE-85 @1.00%     
Fig. 3      A = CONTROL      B = DeCORE IMT-100LF @1.00%      C = DeTROPE CA-100 @ 1.00%      D = DeCORE BE-85 @1.00%     

*Produced best results


figure 4

Fig. 4      A = CONTROL      B = DeCORE IMT-100LF @ 0.25      C = DeTROPE CA-100 @ 0.25%     
     D = DeCORE IMT-100LF @ 0.50%      E = DeTROPE CA-100 @ 0.50%      F = DeCORE BE-85 @ 0.50%     
     G = DeCORE IMT-100LF @ 0.50%      H = DeTROPE CA-100 @ 0.50%      I = DeCORE BE-85 @ 0.50%     

*Produced best results


DeCORE APCI-95

CAST IRON CHIP TEST

Figure 5 shows the results of the Cast Iron Chip Test as previously described.

figure 5

FIGURE 5

A, B and D show results of corrosion inhibition using 1.0% by weight of DeCORE APCI-95 in hard water.
Control is designated as C.

RESULTS:  A, B and D show virtually no rust.



SUBMERSION TEST

Figures 6 through 12 show the results of submersion tests as previously described.


figure 6   figure 7
FIGURE 6   FIGURE 7

Fig. 6  Panels are #110-99.95% COPPER and tested for one (1) yr.

Fig. 7  Panels are #260 alloy- BRASS (30% Zn/70% Cu) and tested for one (1) yr.


figure 8   figure 9
FIGURE 8   FIGURE 9

Fig. 8  Panels are #2024 bare ALUMINUM and tested for one (1) yr.

Fig. 9  Panels are STEEL- SAE 1010 - cold rolled (mild carbon) and tested for one (1) yr.


figure 10   figure 11   figure 12
FIGURE 10   FIGURE 11   FIGURE 12

Fig. 10  Panels are Hot Dipped GALVANIZED  steel - 70 gm. Zn/meter² and tested for one (1) yr.

Fig. 11  Panels are Hot Dipped GALVANIZED steel - 25 gm. Zn/foot² and tested for one (1) yr.

Fig. 12  Panels are electronically GALVANIZEDsteel - 45 gm. Zn/meter² and tested for one (1) yr.


Figures 6 through 12:    Panel A = 1.0% by weight of DeCORE APCI-95     Panel B = 0.5% by weight of DeCORE APCI-95     Panel C = Control

RESULTS:   All A and B Panels show no rust, with the exception of ALUMINUM Panel B which shows some rust at the 0.5% level only.


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