What is Perchlorethylene (PCE/PERC) solvent used for? - CAS No 127-18-4

What is Perchlorethylene (PCE/PERC)?

CAS No 127-18-4 Perchloroethylene is a volatile chlorinated organic hydrocarbon that is widely used as a solvent with the chemical formula C₂Cl₄. It is a non-flammable liquid at room temperature, evaporates easily into the air and has a sharp sweet odour.

• Substance name: Perchloroethylene
• CASR number: 127-18-4
• Molecular formula: C₂Cl₄
• Synonyms: Tetrachloroethylene; PCE; PERC; Ethylene tetrachloride; tetrachloroethene; 1,1,2,2-tetrachloroethylene; carbon dichloride; perchlor; tetrachloroethane; carbon bichloride; perk

Physical properties

It is a colourless liquid solvent. Although it is a liquid at room temperature, some will evaporate giving a sweet ether like odour.

• Melting Point: -22.3°C
• Boiling Point: 121.1°C
• Specific Gravity: 1.623
• Vapour Density: 5.8

What is Perchlorethylene (PCE/PERC) solvent used for?

Perchlorethylene (PCE/PERC) is the dominant solvent used in commercial dry cleaning for degreasing fabrics without damaging them.

Tetrachloroethylene is also an industrial metal degreasing and cleaning solvent for automotive and metalworking parts.

It is also a chemical intermediate in the production of some hydrofluorocarbon (HFC) refrigerants.

Perchloroethylene CAS 127-18-4 is also a solvent in some specialised industrial applications, such as for plastics and rubber, or in certain chemical processes. Many historical uses, such as paint stripping or general-purpose cleaning, have been phased out due to toxicity.

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