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PEG 200
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Description
PEG 200
Other Names: Polyethylene glycol 200, Poly(oxyethylene)200, PEG-4
CAS Number: 25322-68-3
Sum Formula: H(OCH₂CH₂)ₙOH (average n ≈ 4.4)
Molar Mass: Approx. 190–210 g/mol
Appearance: Clear, colorless to slightly yellowish viscous liquid
PEG 200 is a low molecular weight polyethylene glycol composed of repeating ethylene oxide units. It is fully water-soluble, non-volatile, and chemically stable under typical storage conditions. PEG 200 is used as a solvent, carrier, dispersant, and plasticizer in a wide range of technical and industrial formulations.
Chemical and Physical Properties
Density: ~1.124 g/cm³ (20°C)
Viscosity: 5–7 mPa·s (25°C)
Melting Point: < –50°C
Boiling Point: > 200°C (decomposes)
Flash Point: > 200°C (open cup)
Solubility: Completely miscible with water and many polar organic solvents
Vapor Pressure: Negligible
Odor: Odorless
Applications
Used as a humectant and plasticizer in coatings and adhesives
Acts as a solvent and dispersant in chemical formulations and dyes
Used as a lubricant and antistatic agent in textile and metal processing
Employed as a carrier fluid and viscosity modifier in industrial and cosmetic-grade products
Serves as a base for certain cleaning or decontamination fluids (technical grade)
Safety
Signal Word: None
Hazard Statements:
Not classified as hazardous under GHS
First Aid Measures
Eye Contact: Rinse with plenty of water. Seek medical attention if irritation occurs
Skin Contact: Wash with soap and water
Inhalation: Not expected to pose a risk at ambient temperature. Move to fresh air if vapors are inhaled at elevated temperature
Ingestion: Rinse mouth. Product is considered low-toxicity but seek medical advice if symptoms occur
Handling and Storage
Store in tightly sealed containers in a dry, well-ventilated area
Protect from moisture and contamination
Keep away from oxidizing agents and strong acids