
Magnesium acetate tetrahydrate (MF: C4H14MgO8 MW: 104.39)is a colorless or white hygroscopic crystalline solid with a faint acetic odor. It is highly soluble in water and ethanol, and its aqueous solution is nearly neutral to weakly acidic. It loses crystal water at 100°C and decomposes into magnesium oxide at high temperatures.
| Item | Specification |
| Melting Point | 72–75°C (loses water at ~80°C) |
| Boiling Point | N/A |
| Density | 1.454 g/cm³ |
| Flash Point | 40°C |
| Odor | Faint acetic acid smell |
| PH Value | 6.1 (50 g/L, H₂O, 20°C) |
| Solubility | 1200 g/L (15°C in water); soluble in ethanol. |
| Stability | Stable at room temperature; deliquescent in moist air. |
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