Polyethylene Glycol 600

Polyethylene Glycol 600
Other Names: PEG 600, Poly(ethylene oxide), Polyoxyethylene

CAS Number: 25322-68-3
Sum Formula: (C₂H₄O)ₙ (average molar ratio, n ≈ 13–14)
Molar Mass: Approx. 570–630 g/mol (nominal average: 600 g/mol)
Appearance: Clear, colorless to pale yellow viscous liquid or semi-solid (depending on temperature)

Polyethylene glycol 600 is a low-molecular-weight polymer of ethylene oxide. It is part of a homologous series of polyethers known as PEGs. PEG 600 is hydrophilic, non-volatile, and water-soluble, and is used widely in chemical manufacturing, formulation science, and materials processing.

Chemical and Physical Properties
Density: ~1.13 g/cm³ (at 20°C)
Melting Point: ~17–22°C
Boiling Point: >250°C (decomposes)
Solubility in Water: Miscible
Solubility in Other Solvents: Soluble in alcohols, acetone, and chloroform
Odor: Odorless

Applications
Solvent and Carrier: Used as a solvent for organic compounds and as a carrier in chemical formulations.
Humectant and Dispersant: Helps maintain moisture and dispersion in industrial mixtures.
Plasticizer: Applied in resin formulations and coatings to improve flexibility.
Polymer Chemistry: Used in the preparation of block copolymers and as a macromolecular reagent.
Chemical Synthesis: Functions as a phase transfer medium or inert diluent.

Safety

Signal Word: Warning

Handling and Storage
Storage Conditions: Store in tightly sealed containers in a cool, dry, well-ventilated place. Protect from moisture and high heat.
Handling Precautions: Avoid prolonged exposure to heat and direct sunlight. Use appropriate PPE when handling in bulk or when heated.