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Guanidinium carbonate is a guanidinium salt derived from guanidine, with the molecular formula C₃H₁₂N₆O₃ and a molecular weight of 180.17. It is an important organic base and fine chemical raw material, as well as a resin curing agent, flame retardant, and organic synthesis intermediate. Its molecular structure contains both a guanidinium group and a carbonate group, giving it strong basicity, good water solubility, moderate stability, and high reactivity. It is widely used in various fields, including synthetic resins, flame-retardant materials, pharmaceuticals, electroplating, and textiles.
| Item | Specification |
| Melting Point | 196–198°C |
| Boiling Point | N/A |
| Density | 1.34 |
| Vapor pressure | Extremely low; negligible at room temperature |
| Refractive index | N/A |
| Refractive Index | N/A |
| Flash point | N/A |
| Solubility | Highly soluble in water; insoluble in organic solvents such as alcohols and ethers. |
| Acidity coefficient | Strongly basic; pKa approximately 13.6 |
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