Nitrobenzaldehyde appears as light yellow or off white crystals. Nitrobenzaldehyde can be used as a pharmaceutical intermediate for nitrendipine, nifedipine, and nicardipine, or as a dye. Chemical properties: Yellow crystalline solid. The precipitate from water is needle shaped, with a melting point of 58-59 ℃, a boiling point of 164 ℃ (3.06kPa), and a relative density of 1.2792 (20/4 ℃). Soluble in alcohols, ethers, chloroform, benzene, and acetone, almost insoluble in water. Capable of steam distillation in chemical books. M-nitrobenzaldehyde is a benzaldehyde with a nitro group in the meta position. This product is an intermediate in organic synthesis such as pharmaceuticals, dyes, surfactants, etc. In the pharmaceutical industry, it is used for the synthesis of calcium iodoprolol, iodoprolol, meta hydroxylamine bitartrate, nimodipine, nicardipine, nitrendipine, nirudipine, etc. Application: Used for trace analysis of phenols in pharmaceutical intermediates. Organic synthesis intermediates. Used as an intermediate for dyes, photosensitive materials, and pharmaceuticals such as nitrendipine, nifedipine, and nicardipine.