N-Oleyl-1,3-propanediamine CAS 7173-62-8

N-Oleyl-1,3-propanediamine – Cationic Surfactant for Corrosion Inhibition and Textile Applications

Basic Information

• CAS Number: 7173-62-8

• Molecular Formula: C₂₁H₄₂N₂

• Synonyms: N-(cis-9-Octadecenyl)-1,3-propanediamine, Oleyl-1,3-propanediamine

• Appearance: Light yellow oily liquid (may darken on prolonged storage)

• Odor: Characteristic amine odor, pungent

• Density: ~0.88 g/cm³ at 20°C

• Boiling Point: >300°C (decomposes)

• Flash Point: 150–160°C

• Solubility: Poorly soluble in water; soluble in alcohols, benzene, toluene, and organic solvents

• Stability: Stable under normal conditions; decomposes on heating above 300°C or contact with strong acids and oxidizers

Overview
N-Oleyl-1,3-propanediamine (CAS 7173-62-8) is a cationic surfactant combining a long olefinic hydrocarbon chain and a diamine functional group. This unique structure provides strong adsorption to surfaces, forming protective films and enabling stable interfacial interactions. The compound is widely used in corrosion protection, antistatic formulations, textile processing, and mineral flotation.

Key Performance Features

• Adsorption: Cationic amine groups adsorb firmly to negatively charged surfaces, forming hydrophobic monolayers that protect metals from corrosion.

• Emulsification: Reduces surface tension, promoting stable oil‑water emulsions.

• Corrosion inhibition: Effective in pipelines, marine structures, high‑temperature lubricants, and metalworking fluids.

• Antistatic: Reduces static charge accumulation in textile and polymer applications.

• Flotation: Positively charged amine groups interact with negatively charged mineral surfaces, enhancing ore separation efficiency.

Applications

• Corrosion inhibitors: Protective formulations for pipelines, storage tanks, and marine equipment.

• Textile auxiliaries: Antistatic agents and softening compounds in fiber processing.

• Industrial surfactants: Emulsifiers and dispersants in coatings, adhesives, and lubricants.

• Flotation reagents: Mineral processing for the separation of ores.

• Specialty chemicals: Intermediate for functionalized derivatives and polymer additives.

Safety and Handling

• May cause skin, eye, and respiratory irritation; use appropriate personal protective equipment (gloves, safety goggles, protective clothing).

• Handle with adequate ventilation; avoid inhalation of vapors and skin contact.

• In case of contact, rinse with plenty of water and seek medical attention if irritation persists.

• Store in a cool, dry, well‑ventilated area, away from strong acids, oxidizers, and heat sources.

• Keep containers tightly sealed to prevent moisture absorption and contamination.

Storage

• Store in a cool, dry, well‑ventilated area, away from direct sunlight and heat.

• Keep containers tightly sealed to prevent contamination and degradation.

• Shelf life: typically 24 months under recommended conditions.

Packaging
Available in 25 kg, 50 kg, and 200 kg drums, as well as custom packaging upon request.

Quality Assurance
Each batch is tested for amine value, color, and moisture content to ensure consistent quality.