


Trichloroethylene (MF: C₂HCl₃, MW: 131.39) is a crucial halogenated olefin organic solvent. At room temperature, it exists as a colorless, transparent liquid with a chloroform-like odor. It is poorly soluble in water but readily soluble in most organic solvents. As a widely used nonpolar solvent in industrial production, it possesses non-flammable properties and low viscosity.
| Item | Specification |
| Melting point | -86°C |
| Boiling point | 87°C |
| Density | 1.463g/mL at 25°C(lit.) |
| Vapor Density | 4.5(vs air) |
| Vapor Pressure | 61 mmHg (20°C) |
| Refractive Index | n20/D 1.476 (lit.) |
| Flash Point | 90°C ± 12 |
| Viscosity | 0.58 mPa·s (20°C) |
| Odor | Chloroform-like odor |
| Odor Threshold | 3.9 ppm |
| Dielectric Constant | 3.4 (16°C) |
| Critical Temperature | 271°C |
| Critical Pressure | 5.02 MPa |
| Solubility | Sparingly soluble in water; readily soluble in organic solvents such as ethanol and diethyl ether; dissolves fats, rubber, resins, cellulose esters, etc. |
Trichloroethylene is used for metal degreasing and cleaning, such as precision part cleaning in aerospace, automotive manufacturing, machining, and electronic component industries;
Used to synthesize chemical products such as tetrachloroethylene (dry cleaning solvent), chloroacetic acid, trichloroacetaldehyde, and vinylidene chloride (PVDC resin monomer);
Serves as an intermediate in synthesizing fine chemicals like pharmaceuticals, pesticides, and dyes, including certain antibiotics and herbicides;
Serves as a refrigerant intermediate for synthesizing fluorinated refrigerants (e.g., R134a);
Dissolves synthetic resins and rubber for preparing anti-corrosion coatings, printing inks, and adhesives;
Degreases and de-stains wool and silk to enhance dyeing uniformity.
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