Cm352 Corrosion Inhibitor Page

| Component Category | Examples | Function | |-------------------|----------|----------| | | Quaternary ammonium salt (e.g., benzalkonium chloride derivative) | Primary adsorption, cathodic/anodic blocking | | Synergist | Potassium iodide or sodium gluconate | Enhances film stability, reduces pitting | | Solvent | Isopropanol / water blend | Solubility, low freezing point | | pH stabilizer | Triethanolamine | Maintains pH 6–8 in concentrate |

The organic cations (R₄N⁺) adsorb onto the metal surface following a or Temkin isotherm. The adsorption is physical + chemical (physisorption + chemisorption), with free energy of adsorption ΔG° ads typically between –30 and –45 kJ/mol, indicating spontaneous, stable film formation. cm352 corrosion inhibitor

CM352 Corrosion Inhibitor: Protecting High-Stress Aviation Components | Component Category | Examples | Function |

| Industry | Environment | Typical Dosage | Efficacy Target | |----------|-------------|----------------|------------------| | | 15% HCl, 60–90°C | 0.1–0.5% v/v | Corrosion rate < 0.05 lb/ft² (NACE TM0374) | | Heat exchanger cleaning | 5–10% H₂SO₄, 50°C | 200–500 ppm | Reduce rate from 2000 mpy to <20 mpy | | Cooling water systems | Chlorinated freshwater, pH 7–8.5 | 30–50 ppm | Protection against pitting and MIC | | Sour gas pipelines | 100–1000 ppm H₂S, brine | 50–150 ppm | Prevent HIC (hydrogen-induced cracking) | | Pickling baths | 10–20% HCl, 25–40°C | 0.05–0.2% | Reduced acid consumption, smooth surface | benzalkonium chloride derivative) | Primary adsorption