Product name: Perchloroethylene (Tetrachloroethylene, PCE)
CAS No.: 127-18-4
EC No.: 204-825-9
Synonym: TetrachloroetheneMolecular Formula: C2Cl4
Molecular Weight: 165.83
SMILES: ClC(Cl)=C(Cl)Cl
Typical Physical & Chemical Properties
Melting Point -22.3 ℃
Boiling Point 121.3 ℃ (760 mmHg)
Density (20 ℃) 1.622 ~ 1.628 g/mL
Refractive Index n₂₀ᴰ 1.504 ~ 1.508
Odor Mild sweet ether-like characteristic odour
Flammability Non-flammable liquid
Solubility Practically insoluble in water; miscible with hydrocarbons, oils, greases & most organic solvents
Stability Stabilized formulation. Avoid prolonged exposure to strong light, high temperature, active metals (Al, Zn) and strong alkalis. Slowly decomposes without stabilizer.
Product Characteristics
High-efficiency chlorinated solvent with strong dissolving power for grease, wax, oil and organic contaminants.
Low residual volatility after vapor cleaning; widely recognized for vapor degreasing processes.
Supplied with anti-decomposition inhibitors to suppress acid generation during service life.
Multiple commercial grades available: Dry Cleaning Grade, Stabilized Industrial Grade and High Purity Grade for fine chemical synthesis.
Specification of Perchloroethylene
| Test Item | Stabilized Industrial Grade |
Dry Cleaning Grade |
Catalyst Grade |
Test Method |
|---|---|---|---|---|
| Appearance | Clear colourless liquid | Clear colourless liquid | Clear colourless liquid | Visual Inspection |
| Assay (GC) | ≥99.50 % | ≥99.90 % | ≥99.95 % | Gas Chromatography |
| Colour (Pt-Co) | ≤15 Hazen | ≤10 Hazen | ≤5 Hazen | APHA Platinum-Cobalt |
| Water Content | ≤0.02 % | ≤0.010 % | ≤0.005 % | Karl Fischer Titration |
| Free Acid (as HCl) | ≤5 ppm | ≤3 ppm | ≤1 ppm | Potentiometric Titration |
| Residue on Evaporation | ≤0.005 % | ≤0.003 % | ≤0.001 % | Gravimetry |
| Stabilizer Content | Standard inhibitor package | Low-corrosion stabilizer (dry-clean machine special) | Trace inhibitor / inhibitor-free optional | GC |
| Non-volatile Impurities | Strictly controlled | Ultra-low non-volatile residue | Minimal heavy metal & organic impurities | Gravimetry |
Applications
Perchloroethylene is offered in three main grades. Stabilized Industrial Grade for universal metal degreasing; Dry Cleaning Grade optimized for textile dry-cleaning equipment; Catalyst High Purity Grade with minimum impurities for petrochemical and fluorochemical manufacturing processes.
Primary solvent for commercial textile dry-cleaning systems
Vapor-phase degreasing solvent for metal parts, machinery, automotive and precision hardware cleaningCleaning fluid for electronic components, circuit board and precision assembly washing
Reaction medium and raw material for fluorochemical & fine chlorinated chemical manufacturing
Extraction solvent for petrochemical and pharmaceutical intermediate separation
Special cleaning agent for printing, coating and adhesive industry residues
Packing and transportation
300kgs/Iron drum, 24mt/20"FCL, or as per request.
Classified as dangerous goods UN 1897, Class 6.1 Toxic Substance, Packing Group III. Secure drums firmly against collision, rolling and leakage. Do not ship together with alkaline chemicals, oxidants and edible commodities. Operators shall receive hazardous chemical training; carry complete transport documents and emergency disposal guidance. Conduct loading/unloading under good ventilation.
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