Properties of Acrylic Acid (C3H4O2)
Acrylic acid is a colorless liquid organic compound with the chemical formula C3H4O2. It is a simple carboxylic acid and is known for its characteristic pungent, acrid odor. Acrylic acid is used in the production of various polymer materials, particularly in the manufacture of acrylic resins and superabsorbent polymers, which are used in products like diapers and hygiene products.
The following table provides a comprehensive list of acrylic acid properties in both SI and US customary/Imperial units at normal temperature and pressure (NTP).
Click on the icon to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Molar Mass | 72.06 g/mol |
| Density | 1051 kg/m3 |
| Dynamic Viscosity | 1.3 mPa·s |
| Surface Tension | 28.1 mN/m |
| Thermal Properties | Metric |
| Melting Point | 14 °C |
| Boiling Point | 141 °C |
| Thermal Conductivity | 0.19 W/m·K |
| Vapor Pressure | 0.4 kPa |
| Critical Constants | Metric |
| Critical Temperature (Tc) | 342 °C |
| Critical Pressure (Pc) | 5.674 MPa |
| Critical Molar Volume (Vc) | 0.21 cm3/mol |
| Optical Properties | Metric |
| Refractive Index (589 nm) | 1.422 |
| Hazardous Data | Metric |
| Flash Point | 50 °C |
| Autoignition Temperature | 438 °C |
| Lower Flammability Limit | 2% |
| Upper Flammability Limit | 8% |
| NFPA Rating (Health) | 3 |
| NFPA Rating (Fire) | 2 |
| NFPA Rating (Reactivity) | 2 |
Unless stated otherwise, all values are taken at room temperature (approximately 20°C or 68°F) and 1 atm pressure. (1 atm = 101,325 Pa)
Related Pages
References: 1) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018. 2) CRC Handbook of Chemistry and Physics, 97th Edition. United Kingdom: CRC Press, 2016-2017. 3) Yaws, Carl L. The Yaws Handbook of Physical Properties for Hydrocarbons and Chemicals. Netherlands: Elsevier Science, 2015. 4) Fire Protection Guide to Hazardous Materials, 14th Edition. United States: National Fire Protection Association, 2010.