Terrell Isoflurane
Generic name: isoflurane
Dosage form: inhalant
Drug class:General anesthetics
Medically reviewed by Drugs.com. Last updated on Feb 1, 2022.
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Terrell Isoflurane Description
Terrell (isoflurane, USP), a nonflammable liquid administered by vaporizing, is a general inhalation anesthetic drug. It is 1-chloro-2,2,2-trifluoroethyl difluoromethyl ether, and its structural formula is:
Some physical constants are:
| Molecular weight | 184.5 |
| Boiling point at 760 mm Hg | 48.5°C |
Refractive index  | 1.2990-1.3005 |
| Specific gravity 25°/25°C | 1.496 |
| Vapor pressure in mm Hg** | |
| 20°C | 238 |
| 25°C | 295 |
| 30°C | 367 |
| 35°C | 450 |
**Equation for vapor pressure calculation:
| Partition coefficients at 37°C: | |
| Water/gas | 0.61 |
| Blood/gas | 1.43 |
| Oil/gas | 90.8 |
| Partition coefficients at 25°C - rubber and plastic | |
Conductive rubber/gas | 62.0 |
| Butyl rubber/gas | 75.0 |
| Polyvinyl chloride/gas | 110.0 |
| Polyethylene/gas | ~2.0 |
| Polyurethane/gas | ~1.4 |
| Polyolefin/gas | ~1.1 |
| Butyl acetate/gas | ~2.5 |
| Purity by gas chromatography | >99.9% |
| Lower limit of flammability in oxygen or nitrous oxide at 9 joules/sec. and 23°C | None |
| Lower limit of flammability in oxygen or nitrous oxide at 900 joules/sec. and 23°C | Greater than useful concentration in anesthesia. |
Isoflurane is a clear, colorless, stable liquid containin..
