
Monoisopropanolamine (MIPA) is an organic amine compound containing both amino and hydroxyl functional groups. Its molecular formula is C₃H₉NO and its molecular weight is 75.11. At room temperature, it is a colorless, transparent liquid with a slight ammonia odor. It possesses the chemical properties of both alcohols and amines and is highly reactive, capable of undergoing various reactions such as amination, esterification, and etherification.
| Item | Specification |
| Melting point | -2°C (lit.) |
| Boiling point | 160°C (lit.) |
| Density | 0.973 g/mL at 25°C (lit.) |
| Vapor density | 2.6 (vs. air) |
| Vapor pressure | <1 mmHg (20°C) |
| Refractive index | n₂₀/D 1.4478 (lit.) |
| Flash point | 165°F |
| Viscosity | 31 mPa·s (at 20°C) |
| Acid dissociation constant (pKa) | 12.92 ± 0.35 (Predicted) |
| HLB | ≈7.2 |
| Water solubility | Fully miscible with water, alcohols, ketones, and other solvents. |
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