Vanconol® FPI-S100E Series Fatty Acid Hydroxyethyl Imidazoline Corrosion Inhibitors
Product Overview
Vanconol® FPI-S100E series corrosion inhibitors are prepared from fatty acids and hydroxyethylethylenediamine via a high-temperature dehydration and cyclization reaction. The products are environmentally friendly, non-toxic and free of heavy metals. As high-efficiency corrosion inhibitors, they are suitable for formulating oilfield corrosion inhibitors and petroleum refining corrosion inhibitors. They can also be used as raw materials for cationic surfactants, where quaternization or attachment of other functional groups yields nitrogen-containing surfactants.
Chemical Description
Fatty acid hydroxyethyl imidazoline.
Typical Grades
| Grade | Chemical name | CAS No. | Ethyleneamine units |
|---|---|---|---|
| FPI-S101E | Oleic acid hydroxyethyl imidazoline | 21652-27-7 | 1 to 4 |
| FPI-S102E | Tall oil hydroxyethyl imidazoline | 61791-39-7 | 1 to 4 |
Advantages and Benefits
- High cyclization rate: promotes amide ring closure and achieves a high imidazoline conversion rate.
- Good coordination stability: forms multi-point anchoring with metal surfaces, improving film durability.
- Good film-forming properties: strongly adsorbs onto metal surfaces to form a dense protective film that inhibits corrosion.
General Properties
| Item | Range | Test method |
|---|---|---|
| Appearance (25 °C) | Yellow or reddish-brown transparent liquid | Visual |
| Density (25 °C, g/cm³) | 0.92–0.98 | Gravimetric method |
| Non-volatile matter content | ≥97% | Drying method |
| Solubility | Soluble in organic solvents | Dissolution method |
Applications
- Crude oil production: protection of downhole equipment, corrosion protection in acidizing operations, gathering pipelines and storage tanks, and waterflood corrosion inhibitors.
- Petrochemicals: corrosion control in equipment and pipelines.
- Water treatment: feedwater purification, circulating water treatment, circulating cooling systems, boiler water treatment, etc.
- Steel manufacturing: prevention of corrosion in equipment and pipelines.
- Others: power generation, textiles, food and pharmaceutical industries.
Handling Recommendations
- This product is oil-soluble and can be diluted directly in solvent-based systems. For waterborne systems, it is recommended to first reduce viscosity with an alcohol solvent, adjust with acetic acid, and then dilute with softened water.
- Where no synergist is used, the dosage is above 20 ppm based on the final working environment (e.g., high-temperature refinery corrosion inhibitors); laboratory verification is recommended.
Storage and Transport
- Packed in plastic drums, 220 L net per drum.
- During storage and transport, protect from sunlight, fire, moisture and impact.
- Shelf life is one year at room temperature.