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Mono Ethylene Glycol (MEG)
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Mono Ethylene Glycol (MEG) is a colorless, odorless, viscous liquid with a sweet taste. It is a widely used organic compound belonging to the glycol family. MEG is primarily utilized as an antifreeze agent and a raw material in the production of polyester fibers and resins. Its excellent solvent properties, low volatility, and high boiling point make it valuable across various industrial applications.
Description
Primary Uses
- Antifreeze and Coolants
- Used extensively as an antifreeze agent in automotive and industrial cooling systems to prevent freezing and overheating.
- Component in heat transfer fluids and HVAC systems.
- Polyester Production
- Key raw material for manufacturing polyethylene terephthalate (PET) resins used in textiles, packaging (bottles), and films.
- Used in producing polyester fibers for fabrics and carpets.
- Solvent and Chemical Intermediate
- Acts as a solvent in paints, inks, adhesives, and cleaning products.
- Intermediate in producing other chemicals such as antifreeze formulations and plasticizers.
Secondary Uses
- De-icing Fluids
- Used in aircraft de-icing and runway de-icing formulations.
- Hydraulic Fluids and Brake Fluids
- Ingredient in specialized hydraulic and brake fluid formulations.
- Heat Transfer and Refrigeration
- Used in cooling towers and refrigeration systems as a heat transfer medium.
- Pharmaceutical and Personal Care
Employed as a humectant and solvent in pharmaceutical preparations and cosmetics.
KEY PRODUCT FEATURES
Basic Identification Attributes
- Chemical Name (IUPAC): Ethylene glycol
- Common/Trade Name: Mono Ethylene Glycol (MEG)
- CAS Number: 107-21-1
- HS Code: 2905.32
- Synonyms: Ethane-1,2-diol; 1,2-Dihydroxyethane
Physical & Chemical Properties
- Physical State: Clear, colorless, viscous liquid
- Color & Odor: Colorless; mild sweet odor
- Boiling Point: 197.6°C
- Melting Point: -12.9°C
- Density: 1.113–1.116 g/cm³
- Solubility: Miscible with water, alcohols, and many organic solvents
- Viscosity: Approx. 16.1 cP at 20°C
Safety & Hazard Attributes
- GHS Classification: Acute toxicity (oral and dermal), harmful if ingested; Specific target organ toxicity (repeated exposure)
- Toxicity: Toxic if swallowed; can cause central nervous system depression, kidney damage
- Exposure Limits: OSHA PEL – 50 ppm (8-hour TWA)
Storage & Handling Attributes
- Storage Conditions: Store in cool, dry, well-ventilated area away from ignition sources and incompatible materials
- Container Type: Supplied in steel drums, polyethylene containers, or tankers
- Shelf Life: Typically 12 months if stored properly
- Handling Precautions: Use gloves, goggles, and protective clothing; avoid ingestion and inhalation
Regulatory & Compliance Attributes
- Complies with REACH, OSHA, EPA, and FDA regulations (for industrial and indirect food contact use)
- Listed on TSCA inventory
Environmental & Health Impact
- Biodegradability: Readily biodegradable under aerobic conditions
- Ecotoxicity: Moderate toxicity to aquatic organisms; avoid release to water bodies
- Bioaccumulation: Low potential
Carcinogenicity/Mutagenicity: Not classified as carcinogenic
SAFETY HANDLING PRECAUTIONS
Safety Handling Precautions
- PPE Required: Gloves, goggles, and protective clothing recommended
- Handling Guidelines: Use in well-ventilated areas; avoid skin contact and inhalation of vapors
- Storage Measures: Keep containers tightly closed; store away from oxidizers and acids
First Aid Measures
- Inhalation: Move to fresh air; seek medical attention if symptoms persist
- Skin Contact: Wash with soap and water; remove contaminated clothing
- Eye Contact: Rinse eyes thoroughly with water for at least 15 minutes; seek medical attention if irritation persists
- Ingestion: Do not induce vomiting; seek immediate medical attention
Firefighting Measures
- Fire Hazards: Combustible liquid; burns with a faint smoky flame
- Extinguishing Media: Use water spray, foam, dry chemical, or COâ‚‚
- Special Precautions: Wear self-contained breathing apparatus and protective gear
- Hazardous Combustion Products: Carbon oxides, aldehydes
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