Para-Nitro Benzaldehyde (PNBD)

Para-Nitro Benzaldehyde (also called 4-Nitrobenzaldehyde) is an aromatic aldehyde with a nitro group at the para (4th) position of the benzene ring.

Basic Information

• Chemical Formula: C₇H₅NO₃

• Molecular Weight: ~151.12 g/mol

• CAS Number: 555-16-8

• Appearance: Pale yellow to yellow crystalline solid

• Common Abbreviation: PNBD or PNBAL

Structure

It contains:

• One aldehyde group (–CHO)

• One nitro group (–NO₂) opposite to it on the benzene ring

Uses

PNBD is mainly used as an intermediate in:

• Pharmaceuticals

• Dyes & pigments

• Agrochemicals

• Specialty chemicals

• Organic synthesis (Schiff bases, APIs, etc.)

Manufacturing Route

Commonly prepared by:

• Controlled oxidation of p-Nitro Toluene

• Or selective oxidation of p-Nitro Benzyl Alcohol