CAS:96-48-0
English name: 1,4-Butyrolactone
Other names: γ-butyrolactone, 4-hydroxybutyrate lactone, γ-hydroxybutyrate lactone
Molecular formula: C4H6O2
Physical and chemical properties: It is colorless transparent oily liquid with certain hygroscopicity and slight odor. It is mutually dissolvable with water, alcohols, esters, ethers, ketones and aromatic hydrocarbons, and slightly soluble in n-alkanes and cycloalkanes. Freezing point: -43.53 ℃, boiling point: 206 ℃ (101.3 kPa), 89 ℃ (1.6 kPa), relative density: 1.129 (20/4 ℃), refractive index: 1.4362.
Main application: γ-butyrolactone is a common solvent and reaction reagent in chemistry. It is also used as an aromatic agent, detergent, cyanoacrylate remover, paint remover and solvent for some liquid aluminum electrolytic capacitors.
Main technical indicators:
| Item | Index | |||
| Electronic grade | Premium products | Qualified product | ||
| Γ-Butyrolactone, m/% > | 99.9 | 99.7 | 99.5 | |
| Moisture, w/% & | 0. 03 | 0. 05 | 0. 10 | |
| Chroma/Hazen unit (platinum-cobalt color number) | 10 | 10 | 30 | |
| 1, 4-butanediol, w/% & | 0. 05 | 0. 10 | — | |
| Tetrahydrofuran, w/% < | 0. 05 | — | — | |
| Acetal, m/% < | 0. 005 | — | ||
| Acid value (based on butyric acid), w/% < | 0. 03 | 0. 05 | — | |
| Anions | Cl- /(mg/kg) < | 0. 30 | — | — |
| SO42- /(mg/kg) | 1.00 | — | — | |
| NO3-/(mg/kg) | 1.00 | —— | — | |
| Metal Ions | Fe/(mg/kg) & | 0. 05 | — | — |
| Cu/( mg/kg) & | 0. 05 | — | — | |
| Zn/( mg/kg) | 0. 05 | — | —— | |
| Pb/( mg/kg) | 0. 05 | —— | — | |
| Na/ (mg/kg) | 0. 50 | — | — | |
| K/( mg/kg) | 0. 50 | — | — | |