
4 Nitrobenzaldehyde/p-Nitrobenzaldehyde (CAS 552-31-8), with the molecular formula C₇H₅NO₃, is a white to pale yellow crystalline powder. It is stable at room temperature, slightly soluble in water, and readily soluble in organic solvents such as alcohols and ethers. It is neutral and exhibits good chemical reactivity. It is primarily used as an organic synthesis intermediate, a raw material for pharmaceuticals and pesticides, in dye synthesis, and as an analytical reagent.
| Item | Specification |
| Melting Point | 103-106°C(lit.) |
| Boiling Point | 273-274°C |
| Density | 1.496 g/cm³(20℃) |
| Flash Point | 155°C |
| Vapor Pressure | 0.6 mmHg(25°C) |
| Refractive Index | 1.6180(20°C) |
| Solubility | 2.34 g/L (25°C); readily soluble in most organic solvents |
| Stability | [α] 20/D +80±3° Stable at room temperature; exhibits the chemical reactivity typical of aromatic aldehydes; flammable when exposed to open flames or high heat |
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