Butyl oleate (chemical formula C??H??O?) is an important oleate ester compound with broad applications across multiple industrial sectors. Its primary uses are as follows:

I. Core Industrial Applications

1. ?Plasticizer?
   • Used as a plasticizer for materials such as polyvinyl chloride (PVC), chloroprene rubber, and ethyl cellulose to improve flexibility and processability. Particularly suitable for cold-resistant rubber products (e.g., rubber dams), maintaining elasticity at temperatures as low as -50°C.
2. ?Lubricant and Waterproofing Agent?
   • Serves as an additive for mechanical lubricants, a lubricant for drilling mud, and a waterproofing treatment agent for fabrics/materials.
3. ?Solvent?
   • Replaces toxic benzene-based solvents in industrial applications such as dye dispersants, coatings, and inks.

II. Specialized Functional Applications

1. ?Diesel Anti-Wear Agent?
   • Combined with mineral oil to form an environmentally friendly low-sulfur diesel anti-wear agent, reducing equipment wear and emission pollution.
2. ?Surfactant?
   • Used as a dye dust suppressant, textile antistatic agent, and leather fatliquoring agent (enhancing smoothness and texture).
3. ?Industrial Additives?
   • Functions as a polymer cross-linking agent, epoxy resin curing agent, metal flotation agent, and release agent.

III. Other Fields

• ?Pesticide Excipient?: Enhances the permeability of insecticides.
• ?Gas Chromatography Stationary Phase?: Used for analytical separation (operating temperature ≤120°C).

Key Physicochemical Properties

?Pharmaceutical Application Note?: Some studies mention its potential as a drug carrier, but current industrial applications are primarily in the chemical sector. Pharmaceutical use requires compliance with specific purification standards (e.g., low acid value, heavy metal control).