Amino Alcohol Rust-Inhibiting Admixture
CAS Number: 141-43-5
Amino alcohol-based mixed-type corrosion inhibitor (also marketed as organic inhibitor or amine-based inhibitor) provides cathodic and anodic protection for steel reinforcement in concrete through adsorption onto the steel surface. Unlike calcium nitrite, it is organic, low-toxicity, and migrating — meaning it can penetrate existing concrete when applied as a surface treatment to reach embedded steel. Typical dosage: 3–10 L/m³.
Technical Specifications
| pH | 9.0-11.0 |
| appearance | Light yellow to amber liquid |
| specific gravity | 0.98–1.02 |
| active content (%) | 50±5 |
| chloride content (%) | ≤0.05 |
Applications
- Existing concrete structures requiring rehabilitation
- Surface-applied inhibitor on bridge decks and parking structures
- New concrete in marine and de-icing salt environments
- Pre-mixed admixture for reinforced concrete repair mortars
- Steel-reinforced concrete in industrial and chemical plants
Key Features
- Mixed-type inhibitor offering both anodic and cathodic protection
- Migrating ability allows surface application on existing structures
- Organic, low-toxicity, and environmentally more acceptable than nitrite
- Does not significantly affect setting time or concrete workability
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