Gamma-Butyrolactone (GBL)
CAS Number: 96-48-0
Gamma-butyrolactone (GBL, ≥99.5%) is a cyclic ester with high polarity, excellent solvency, and good thermal stability, used as a solvent in lithium-ion battery electrolytes, pharmaceutical synthesis, and as a raw material for N-methylpyrrolidone (NMP) and pyrrolidone production. Its low freezing point makes it suitable for electrolyte applications at low temperatures.
Technical Specifications
| appearance | Colorless clear liquid |
| purity (%) | ≥99.5 |
| water content (%) | ≤0.05 |
| boiling point (°C) | 204.0 |
| density (g/mL, 20°C) | 1.124–1.128 |
Applications
- Lithium-ion battery electrolyte co-solvent for low-temperature performance
- Feedstock for NMP and 2-pyrrolidone production
- Pharmaceutical intermediate for GABA, baclofen, and other API synthesis
- Specialty solvent for polyamide and polyimide processing
- Cleaning and stripping agent for microelectronics industry
Key Features
- High purity ≥99.5% suitable for demanding battery electrolyte and pharmaceutical applications
- Low freezing point (-44°C) enabling battery operation in sub-zero temperature environments
- High dielectric constant enabling excellent lithium salt dissolution in electrolyte formulations
- Versatile NMP precursor providing upstream raw material integration for solvent manufacturers
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CAS Number
96-48-0
Category
Industrial Solvents / ChemicalsAvailability
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