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.
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