Ethambutol
- CAS NO. : 74-55-5
- CAT NO. : PH-API-4555
Physical State: Colorless gas or liquid (depending on temperature/pressure)
Color: Colorless
Odor: Strong ammoniacal odor
Appearance: Gas (at room temperature) or clear liquid under pressure
Melting Point: –81 °C (lit.)
Boiling Point: 16.6 °C (lit.)
Density: 0.682 g/mL at 20 °C (liquid form)
Refractive Index: n20/D 1.378 (for aqueous solution, reported)
Flash Point: –17 °C (closed cup)
Vapor Pressure: ~1.85 atm at 20 °C
Storage Conditions: Store in a cool, dry, well-ventilated area; keep away from heat, sparks, flame; usually stored as compressed liquefied gas.
Solubility: Miscible with water, ethanol, ether.
pKa: ~10.8 (25 °C, conjugate acid in water)
Molecular Formula: C₂H₇N2
Molecular Weight: 45.08 g/mol
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