Focusing On Product Differentiation, Market Needs, & Performance Improvement Metal Panel Submersion Testing, 4/11/19
Corrosion Testing Metal Panel Submersion Testing DeForest Standard Method Panels submerged halfway into solution with corrosion inhibitor, in sealed glass jars Top half of panels are in the vapor phase Tested in solutions of standard hard water (100ppm as CaCO 3 & 71ppm as chlorides), unless otherwise noted Corrosion inhibitors tested at varying concentrations (by weight) Blank panels- same testing water, no corrosion inhibitor Standard Metals Aluminum Panels: Bare Aluminum, #2024 Steel Panels: Cold Rolled Steel (Mild), SAE 210 Copper Panels: #110 Copper (99.95% Cu) Brass Panels: #260 Brass Alloy (30% Zn / 70% Cu)
Comparison of Multi-Metal Inhibitors DeCORE AFCI-45 45% active, mixed carboxylate (alkali salt) Amine-free No azoles, borates, phosphorous, nitrites DeCORE APCI-95MOD 100% active, amine carboxylate Contains MEA and TEA Contains azole chemistry 2024 Bare Aluminum 90 Days RT 2024 Bare Aluminum 120 days RT Blank 1% 0.5% 0.25% 1% 0.25% Blank
Comparison of Multi-Metal Inhibitors DeCORE AFCI-45 45% active, mixed carboxylate (alkali salt) Amine-free No azoles, borates, phosphorous, nitrites 2024 Bare Aluminum 1 Year RT DeCORE APCI-95MOD 100% active, amine carboxylate Contains MEA and TEA Contains azole chemistry 2024 Bare Aluminum 1 Year RT 0.25% 0.5% 1.0% 1% 0.25% Blank
Comparison of Multi-Metal Inhibitors DeCORE AFCI-45 45% active, mixed carboxylate (alkali salt) Amine-free No azoles, borates, phosphorous, nitrites DeCORE APCI-95MOD 100% active, amine carboxylate Contains MEA and TEA Contains azole chemistry SAE 210 Cold Rolled Steel 90 Days SAE 210 Cold Rolled Steel 120 Days RT Blank 0.25% 0.5% 1.0% 1% 0.25% Blank
Comparison of Multi-Metal Inhibitors DeCORE AFCI-45 45% active, mixed carboxylate (alkali salt) Amine-free No azoles, borates, phosphorous, nitrites SAE 210 Cold Rolled Steel 1 Year RT DeCORE APCI-95MOD 100% active, amine carboxylate Contains MEA and TEA Contains azole chemistry SAE 210 Cold Rolled Steel 1 Year RT 0.25% 0.5% 1.0% 1% 0.25% Blank
Comparison of Multi-Metal Inhibitors DeCORE AFCI-45 45% active, mixed carboxylate (alkali salt) Amine-free No azoles, borates, phosphorous, nitrites 110 Copper Panels 90 Days RT DeCORE APCI-95MOD 100% active, amine carboxylate Contains MEA and TEA Contains azole chemistry 110 Copper Panels 120 Days RT Blank 0.25% 0.5% 1.0% 1% 0.25% Blank
Comparison of Multi-Metal Inhibitors DeCORE AFCI-45 45% active, mixed carboxylate (alkali salt) Amine-free No azoles, borates, phosphorous, nitrites DeCORE APCI-95MOD 100% active, amine carboxylate Contains MEA and TEA Contains azole chemistry 110 Copper Panels 1 Year RT 110 Copper Panels 1 Year RT 0.25% 0.5% 1.0% 1% 0.25% Blank
Comparison of Multi-Metal Inhibitors DeCORE AFCI-45 45% active, mixed carboxylate (alkali salt) Amine-free No azoles, borates, phosphorous, 260 Brass Panels 90 Days RT DeCORE APCI-95MOD 100% active, amine carboxylate Contains MEA and TEA Contains azole chemistry 260 Brass Panels 120 Days RT Blank 0.25% 0.5% 1.0% 1% 0.25% Blank
Comparison of Multi-Metal Inhibitors DeCORE AFCI-45 45% active, mixed carboxylate (alkali salt) Amine-free No azoles, borates, phosphorous, nitrites 260 Brass Panels 1 Year RT DeCORE APCI-95MOD 100% active, amine carboxylate Contains MEA and TEA Contains azole chemistry 260 Brass Panels 1 Year RT 0.25% 0.5% 1.0% 1% 0.25% Blank
Water Soluble Corrosion Inhibitor Corrosion Testing: Flash Rust Protection at ph ~3 to ~5.5 DeCORE AFCI-45 @ 1% by weight (0.45% active) First Beaker: Acidified tap water (ph 7.01) with a few drops of a 10% citric acid solution to final ph 5.35 Second Beaker: 1% by weight DeCORE AFCI-45 added to acidified tap water to final ph 5.39 Third Beaker: Acidified distilled water (ph 5.53) with a few drops of a 10% citric acid solution to final ph 3.45 Fourth Beaker: 1% by weight DeCORE AFCI-45 added to acidified distilled water to final ph 5.38 SAE 210 Cold Rolled Steel Procedure: Cold rolled steel panels were placed into each solution and allowed to soak for ~1 hour at room temperature. The steel panels were removed and allowed to air dry without rinsing. No rust forms on the panels if DeCORE AFCI-45 is present.
Hydrotrope Cloud Point Comparison 5% NP-9 w/ 3.75% hydrotrope (by weight, as-is) DeCORE AFCI-45: multi-metal, amine-free corrosion inhibitor also an excellent hydrotrope 90 Test Formulation: 5% NPE-9, 3.75% Hydrotrope (by wt.), 91.25% Electrolyte 80 Cloud Point (C) 70 60 50 40 30 20 DeCORE AFCI-45 DeTROPE CA-100 (50% soln) DeTROPE SA-45 DePHOS H-66-872 SXS-40 No hydrotrope 10 0 5% NaOH 10% NaOH 5% TKPP 5% SMP SMP = Sodium Metasilicate Pentahydrate / TKPP = Tetrapotassium Pyrophosphate / SXS-40 = Sodium Xylene Sulfonate 40%
Corrosion Testing- In Standard Hard Water DeCORE IDMT-100 100% Active Amine Carboxylate 110 Copper Alloy 90 Days RT 110 Copper Alloy 9 Months RT Blank 0.25%, 0.5% Blank 0.25% 0.5%
Corrosion Testing- In Standard Hard Water DeCORE IDMT-100 100% Active Amine Carboxylate 260 Brass Alloy 90 Days RT 260 Brass Alloy 9 Months RT Blank 0.25%, 0.5% Blank 0.25% 0.5%
Corrosion Testing- In Standard Hard Water DeCORE IDMT-100 100% Active Amine Carboxylate SAE 210 Cold Rolled Steel 90 Days SAE 210 Cold Rolled Steel 9 Months Blank 0.25% 0.5% Blank 0.25% 0.5% 1%
Corrosion Testing- In Standard Hard Water DeCORE IDMT-100 100% Active Amine Carboxylate 2024 Bare Aluminum 90 Days 2024 Bare Aluminum 9 Months Blank 0.25% 0.5% Blank 0.25% 0.5% 1%
Corrosion Testing- In Standard Hard Water 0.5% DeCORE IMT-100LF, SAE 210 Cold Rolled Steel Panels 100% Active Amine-Carboxylate 30 Days in Standard Hard Water (71 ppm as chloride) Blank Room Temp 50 C
Corrosion Testing- In Standard Hard Water 0.5% DeCORE IMT-100LF, SAE 210 Cold Rolled Steel Panels 100% Active Amine-Carboxylate 9 Months in Standard Hard Water @ RT (71 ppm as chloride) Blank 0.5%
Corrosion Testing- In Higher Chlorides 0.5% DeCORE IMT-100LF, SAE 210 Cold Rolled Steel Panels 100% Active Amine-Carboxylate 30 Days in Higher Chlorides (200 ppm as CaCO 3 & 142 ppm as chloride) Blank 0.5% Solution contains 0.25% to 1.0% by weight corrosion inhibitor in higher chloride hard water (200ppm CaCO 3 / 142 ppm as chloride)
Corrosion Testing- In Standard Hard Water DeTROPE CA-100, 9 Month Results 100% Active Amine-Carboxylate 2024 Bare Aluminum SAE 210 Cold Rolled Steel Blank 0.25% 0.5% 1% Blank 0.25% 0.5% 1%
DeTERIC LP Corrosion Inhibition Properties Corrosion Testing in Standard Hard Water DeTERIC LP, Sodium Lauriminodipropionate Hard Water: 100ppm CaCO 3 / 71ppm as chloride SAE 210 Cold Rolled Steel, 72 hours Blank 0.5% active
DeTERIC LP Corrosion Inhibition Properties Corrosion Testing in Standard Hard Water DeTERIC LP, Sodium Lauriminodipropionate Hard Water: 100ppm CaCO 3 / 71ppm as chloride 2024 Bare Aluminum, 72 hours Blank 0.5% active
DeTERIC LP Corrosion Inhibition Properties Corrosion Testing- In Acids DeTERIC LP, Sodium Lauriminodipropionate In 10% HCl (by weight) SAE 210 Cold Rolled Steel, 72 Hours Blank 0.1% active
DeTERIC LP Corrosion Inhibition Properties Corrosion Testing- In Acids DeTERIC LP, Sodium Lauriminodipropionate In 10% Phosphoric Acid (by wt.) SAE 210 Cold Rolled Steel In 10% Sulfuric Acid (by wt.) SAE 210 Cold Rolled Steel 72 hours 72 hours Blank 0.1% active Blank 0.1% active
DeTERIC LP Corrosion Inhibition Properties Corrosion Testing- In Acids DeTERIC LP, Sodium Lauriminodipropionate In 10% HCl (by weight) Blank 0.1% active 24 hours, 2024 Bare Aluminum Blank 0.1% active 48 hours, 2024 Bare Aluminum
DeTERIC LP Corrosion Inhibition Properties Corrosion Testing- In Acids DeTERIC LP, Sodium Lauriminodipropionate In 10% Sulfuric Acid (by weight) 24 hours, 2024 Bare Aluminum Blank 0.1% active
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