 |
| Identity |
| 3D Structure |
| Physicochemical data |
| Safety classifications |
Formic acid [64-18-6] |
 |
Physicochemical data
| value | source | ||
|---|---|---|---|
| Description | colorless liquid | Merck MSDS | |
| Odor | pungent | Merck MSDS | |
| Melting point | 8.3 °C | Handbook | |
| Melting point | 8 °C | Acros MSDS | |
| Boiling point | 101 °C at 1010 hPa | Handbook | |
| Density | 1.22 g/mL at 20 °C | Handbook | |
| Vapor pressure | 42 hPa at 20 °C | Merck MSDS | |
| Vapor pressure | 44 hPa at 20 °C | Acros MSDS | |
| pKa | 3.75 at 25°C | ACD-pKa | |
| pKa | 3.743.75 at 25°C (calculated) | ACD-pKa | |
| Refractive index | 1.3714 at 20 °C and 589 nm | Handbook | |
| Dynamical viscosity | 1.8 mPa·s at 20 °C | Merck MSDS | |
| Dynamical viscosity | 1.47 mPa·s at 20 °C | Acros MSDS | |
| Flash point | 48 °C (closed cup) | Merck MSDS | |
| Flash point | 69 °C | Acros MSDS | |
| Ignition temperature | 480 °C | Merck MSDS | |
| Ignition temperature | 520 °C | Acros MSDS | |
| Explosion limits in air | lower 12 % upper 38 % | Merck MSDS | |
| Explosion limits in air | lower 14 % upper 33 % | Acros MSDS | |