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Here
are the details about monoethylene glycol (CAS# 107-21-1):
Chemical Properties:
- Chemical Formula: C₂H₆O₂
- Molecular Weight: 62.07 g/mol
- Structural Formula:
HOCH₂CH₂OH
- IUPAC Name: Ethane-1,2-diol
- Common Names: Monoethylene
glycol, MEG
Physical Properties:
- Appearance: Colorless,
odorless liquid
- Density: 1.113 g/cm³ at 20°C
- Melting Point: -12.9°C
- Boiling Point: 197.3°C
- Solubility: Miscible with
water, ethanol, acetone, and most organic solvents
Chemical Characteristics:
- Functional Groups: Two
hydroxyl (-OH) groups attached to a two-carbon backbone
- Acidity (pKa): ~15.1
- Basicity (pKb): ~8.9
- Reactivity: Relatively stable
under normal conditions; reacts with acids and aldehydes to form acetals
and esters.
Uses:
- Industrial: Predominantly
used as a raw material in the production of polyester fibers, resins, and
polyethylene terephthalate (PET).
- Antifreeze: Component in
automotive antifreeze formulations.
- Hydraulic Fluids: Used in
hydraulic fluids and as a coolant in various applications.
- Chemical Intermediates: Used
in the production of solvents, plasticizers, and humectants.
Safety and Handling:
- Toxicity: Low acute toxicity;
however, ingestion can cause gastrointestinal irritation.
- Flammability: Non-flammable
liquid.
- Storage: Store in a cool,
dry, well-ventilated area away from heat and sources of ignition.
Production:
- Synthesis: Produced
industrially by the hydration of ethylene oxide, which is derived from
ethylene.
- Yield: High yield process due
to efficient production methods.
Environmental Impact:
- Biodegradability: Monoethylene
glycol is readily biodegradable in the environment.
- Ecotoxicity: Low
environmental toxicity; does not accumulate significantly in aquatic
organisms.
Monoethylene glycol is a versatile chemical with widespread industrial applications, particularly in the production of polymers and as a component in automotive and industrial fluids. Its properties make it valuable in numerous sectors, including textiles, packaging, and automotive industries.
If you need further information
or have specific questions, feel free to ask!