GBL has a wide range of practical applications because of its low freezing point, high boiling point, and a unique combination of solvent and electrical properties. It has applications as a solvent for special resins, in photography, in batteries, and as an electrolyte. Also a number of derivatives are synthesized from GBL.

  • CAS: No. 96-48-0 (T)
  • EINECS: No. 202-509-5
  • Japan Chemical Substances Control Law: METI-No. 5-3337
  • Japan, Industrial Safety and Health Law: No. 5-3337
  • Japan, Poisonous and Deleterious Substances Control Law: Not applicable.
  • Japan, Fire Services Law: Hazardous material Class 4 Petroleums No.3 (water-soluble liquid).Aprotic, polar solvent.




GBL is a 5-membered-ring lactone.

Common Names Gammabutyrolactone,
Structure GBL
CAS No. 96-48-0
Japan Chemical Substances Control Law METI-No. 5-3337
Japan, Poisonous and Deleterious Substances Control Law Not applicable
Japan, Fire Services Law Hazardous material Class 4 Petroleums No.3 water soluble, Hazardous Rank III
Molecular Weight 86.1
Appearance Clear colorless liquid
Odor Faint ester smell
Specific Gravity (25/4℃) 1.13
Viscosity(mPa・s) 1.50(30℃)
Boiling Point (℃) 204
Freezing Point (℃) -44
Vapor specific gravity 3
Flash Point (℃) 101 (Cleveland open cup)
Autoignition Temperature (℃) 455

Our Mizushima plant (Kurashiki-shi, Okayama-ken) produces high-grade GBL from maleic anhydride in a continuous production process.



1) Solvent Applications

  • Solvent
    Used as a solvent for photosensitive resins and for special inks.
  • Photography
    Used for dispersion and finishing agents.
  • Electrical
    Used as the electrolyte solvent for capacitors and for lithium batteries.
  • Casting Binder

2) Raw Material for Synthesis Applications

Used as a raw material for the solvents listed below.

  • 2-Pyrrolidone (2P)
    2P is a raw material for pharmaceutical intermediates, nylon-4, NMP, as well as a floor polish agent.
  • N-Methyl-2-pyrrolidone (NMP)
    NMP is used for aromatic and butadiene hydrocarbon extraction, polyamide/polyimide varnish solvent, as well as semiconductor and color filter photoresist solvent, etc.
  • N-Vinyl-2-pyrrolidone (NVP)
    NVP is a raw material for PVP.  It's also used as a stripping agent and a petroleum additive.
  • Polyvinylpyrrolidone (PVP)
    PVP is used for cosmetics (hair spray and lotion thickening agent), medical products (tablet binder, plasma substitute, mouthwash), industrial applications (suspension stabilizer for colloidal suspension polymerization, dyeing agent, hardening oil viscosity modifier, adhesive thickening agent), and food (beer / wine clarification agent).
  • Other
    There are many other applications such as methionine, etc.

Storage and Handling

GBL is classified under the Japanese Fire Services Act as a hazardous material, Class 4, Petroleums No.3 (4,000 liter quantity specified), water-soluble, Hazardous Rank III. 
Since GBL is hygroscopic, if moisture content is to be controlled, it is important to keep storage containers tightly closed or under a dry nitrogen atmosphere.  When handling,  protective equipment such as protective gloves and goggles should be worn.



Product Specifications

Item Specification
Hue (APHA) <10
Specific Gravity (20/4℃) 1.129~1.131
Purity (%) >99.5
Moisture (%) <0.1

Available Quantities

Tanker Truckload (Lorry) 10ton
Drum 220kg
Oilcan 20kg

Inquiries Concerning Products

Mitsubishi Chemical Corporation
C4 & PBT Dept.

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