Diethylene Glycol Monoethyl Ether (CAS 111-90-0) 

1. Chemical Identity

• IUPAC Name : 2-(2-Ethoxyethoxy)ethanol

• Synonyms : Ethyl diglycol; DEGME; Ethyl carbitol; 2-(2-Ethoxyethoxy)ethanol

• CAS Registry Number : 111-90-0

• Molecular Formula : C6H14O3

• Molecular Weight : 134.17 g/mol
  
   

  2. Physical Properties

• Appearance : Clear, colorless liquid.

• Odor : Mild, slightly sweet odor.

• Boiling Point : ~202°C (at 760 mmHg).

• Melting Point : -76°C.

• Density : ~0.99 g/cm³ at 20°C.

• Solubility :

  • Miscible with water, alcohols, ethers, and many organic solvents.

  • Acts as a co-solvent for polar and non-polar substances.

• Refractive Index : ~1.426 (20°C).

• Vapor Pressure : ~0.1 mmHg at 20°C.

• Flash Point : 94°C (closed cup) - combustible liquid.
  
  
  Applications

• Industrial Solvent :

  • Widely used in paints, coatings, inks, and dyes due to its ability to dissolve resins, oils, and cellulose derivatives.

  • Effective in cleaning agents and degreasers for metals or electronics.

• Cosmetics & Personal Care :

  • Functions as a solvent or coupling agent in lotions, creams, and hair care products.

• Pharmaceuticals :

  • Used as an excipient or solvent in drug formulations.

• Electronics :

  • Employed in photoresist developers and printed circuit board manufacturing.