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Ethylene Glycol Monobutyl Ether (EGBE) Developer Solvent

CAS Number: 111-76-2

Semiconductor grade ethylene glycol monobutyl ether (EGBE, also known as butyl cellosolve) is used as a co-solvent in photoresist developer formulations and as a cleaning agent for equipment and fixtures. Its moderate evaporation rate and compatibility with aqueous alkaline developers make it useful in optimizing developer spreading and uniformity on wafer surfaces.

Technical Specifications

appearanceColorless clear liquid
purity (%)≥99.5 (GC assay)
water content≤300 ppm
metallic impurities≤1 ppb each
acidity (as acetic acid)≤10 ppm

Applications

  • Co-solvent in aqueous alkaline photoresist developers
  • Wetting agent for improved developer uniformity
  • Cleaning solvent for photoresist spin coaters
  • Surfactant formulation co-solvent
  • Screen printing and lithography cleaning

Key Features

  • Moderate evaporation rate for improved process latitude in development
  • Fully miscible with water and common photoresist solvents
  • Low metallic impurities prevent photoresist adhesion degradation
  • Effective wetting performance on hydrophobic wafer surfaces

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Ethylene Glycol Monobutyl Ether (EGBE) Developer Solvent chemical structure

CAS Number

111-76-2

Availability

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