Mississippi Administrative Code
Title 11 - Mississippi Department of Environmental Quality
Part 5 - Underground Storage Tank Regulations
Chapter 2 - Mississippi Commission on Environmental Quality Underground Storage Tanks Regulations Technical Standards and Corrective Action Requirements for Owners and Operators of Underground Storage Tanks (UST) (Adopted March 22, 1989; Amended August 25, 2011, Last Amended August 23, 2018)
Appendix 11-5-2-280.1 - GUIDELINES FOR THE EVALUATION OF UNDERGROUND STORAGE TANK CATHODIC PROTECTION SYSTEMS
Appendix 11-5-2-280.1-J
Universal Citation: MS Code of Rules 11-5-2-280.1-J
Current through September 24, 2024
| TYPICAL POTENTIAL OF SELECTED METALS | |
| The table below lists some common metals and their observed electrical potentials as measured with respect to a copper/copper sulfate reference electrode. | |
| METAL | VOLTAGE (mV) |
| Magnesium (commercially pure) | -1750 |
| Magnesium (alloy found in typical cathodic protection anode) | -1600 |
| Zinc (nearly 100% pure - as found in typical cathodic protection anode) | -1100 |
| Aluminum (5% zinc alloy) | -1050 |
| Aluminum (pure) | -800 |
| Low Carbon Steel (new clean % shiny) | -600 to -750 |
| Low Carbon Steel (old rusty) | -500 to -600 |
| Stainless Steel (active - unpassivated) | -450 to -600 |
| Cast Iron (not graphitized) | -500 |
| Lead | -500 |
| Low Carbon Steel in Concrete | -200 |
| Brass, Bronze | -200 |
| Stainless Steel (passivated) | 50 to -250 |
| Copper | 0 to -200 |
| High Silicone Cast Iron | -200 |
| Carbon, Graphite | +300 |
| Silver | +500 |
| Platinum | +900 |
| Gold | +1200 |
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