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Perchloroethylene
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Perchloroethylene (also known as tetrachloroethylene or PCE) is a clear, colorless liquid with a sweet odor, widely used as a solvent in dry cleaning and industrial degreasing. It has excellent solvent power for organic materials, is non-flammable, and chemically stable under normal conditions. Perchloroethylene is valued for its efficiency in removing oils, greases, and waxes from fabrics and metals, and serves as a key chemical intermediate in various industrial applications.
Description
Perchloroethylene
Primary Uses
- Dry Cleaning Solvent
- The primary solvent used in commercial dry cleaning for removing oils, stains, and dirt from textiles without damaging the fabric.
- Provides effective cleaning with minimal fabric shrinkage or color loss.
- Industrial Degreasing
- Used to clean metal parts, machinery components, and electronic equipment by dissolving grease, oils, and wax residues.
- Suitable for vapor degreasing and cold cleaning processes.
- Chemical Intermediate
- Employed as a raw material in the manufacture of fluorocarbons and other chemical products.
- Extraction Solvent
- Used in laboratories and industrial processes to extract organic compounds from mixtures.
Secondary Uses
- Adhesive and Coatings Manufacturing
- Utilized as a solvent in adhesive formulations and specialty coatings.
- Textile and Leather Processing
- Applied in cleaning and finishing processes for textiles and leather goods.
- Pesticide Formulations
- Acts as a solvent carrier in certain pesticide products.
- Electronics Industry
- Used for cleaning delicate electronic components during manufacturing.
KEY PRODUCT FEATURES
1. Basic Identification Attributes
- Chemical Name (IUPAC): Tetrachloroethylene
- Common/Trade Name: Perchloroethylene, PCE, Tetrachloroethene
- CAS Number: 127-18-4
- HS Code: 2903.39.00
- Synonyms: Perc, Dry cleaning solvent, Tetrachloroethene
2. Physical & Chemical Properties
- Physical State: Clear, colorless liquid
- Color & Odor: Odorless to sweet aromatic odor
- Boiling Point: 121°C
- Melting Point: -22.8°C
- Density: 1.62 g/cm³ at 20°C
- Solubility: Slightly soluble in water; miscible with most organic solvents
- Vapor Pressure: 18.3 kPa at 25°C
3. Safety & Hazard Attributes
- GHS Classification: Hazardous (Carcinogenic, harmful if inhaled or swallowed, causes skin and eye irritation)
- Toxicity: Moderate to high toxicity; potential carcinogen (IARC Group 2A)
- Exposure Limits: OSHA PEL - 100 ppm (8-hour TWA)
4. Storage & Handling Attributes
- Storage Conditions: Store in a cool, well-ventilated area away from heat and ignition sources
- Container Type: Supplied in sealed metal drums or chemical-grade containers
- Shelf Life: Stable for several years if stored properly
- Handling Precautions: Use personal protective equipment; avoid inhalation and prolonged skin contact
5. Regulatory & Compliance Attributes
- Complies with EPA, OSHA, and REACH regulations
- Listed under various chemical inventories and reporting requirements
- Subject to strict environmental discharge and workplace exposure limits
6. Environmental & Health Impact
- Biodegradability: Poorly biodegradable; persistent in environment
- Ecotoxicity: Toxic to aquatic life; avoid release into waterways
- Bioaccumulation: Potential for bioaccumulation in aquatic organisms
- Carcinogenicity/Mutagenicity: Classified as a probable human carcinogen (IARC Group 2A)
SAFETY HANDLING PRECAUTIONS
Safety Handling Precautions
- PPE Required: Respirators, gloves, chemical goggles, and protective clothing
- Handling Guidelines: Use in well-ventilated areas or under fume hoods; avoid skin and eye contact
- Storage Measures: Keep containers tightly closed; prevent vapor release
First Aid Measures
- Inhalation: Move to fresh air immediately; seek medical attention if breathing difficulty occurs
- Skin Contact: Wash with soap and water; remove contaminated clothing
- Eye Contact: Rinse thoroughly with water for at least 15 minutes; seek medical attention
- Ingestion: Do not induce vomiting; seek immediate medical help
Firefighting Measures
- Fire Hazards: Non-flammable but decomposes to produce toxic gases under fire conditions
- Extinguishing Media: Use water spray, foam, dry chemical, or CO₂
- Special Precautions: Firefighters must wear self-contained breathing apparatus (SCBA)
- Hazardous Combustion Products: Phosgene, hydrogen chloride, carbon monoxide, and other toxic gases
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