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4-Aminobenzaldehyde

Also known as: p-Aminobenzaldehyde, Benzaldehyde, 4-amino-, 4-Formylaniline, p-Formylaniline, 4-Aminobenzenecarbaldehyde, NSC 45163, EINECS 209-115-2, MFCD00038137, 4-amino-Benzaldehyde

4-Aminobenzaldehyde (CAS 556-18-3) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C7H7NO and a molecular weight of 121.137 g/mol. Key properties include a melting point of 77-79°C, a boiling point of 278.1±23.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 122.0±22.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
556-18-3
Jingsj CID
J-3206-4
Molecular Formula
C7H7NO
Molecular Weight
121.137 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point77-79°C
Boiling Point278.1±23.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point122.0±22.6 °C
Exact Mass121.052765
PSA43.09000
LogP0.91
Vapor Pressure0.0±0.6 mmHg at 25°C
Refractive Index1.640

Activity & Biological Data

Additional Information[1]. Paul L, et, al. Organically Functionalized Mesoporous SBA-15 Type Material Bearing Fluorescent Sites for Selective Detection of Hg II from Aqueous Medium. ACS Omega. 2019 Oct 14;4(18):17857-17863.

Frequently Asked Questions

What is the CAS number of 4-Aminobenzaldehyde?

The CAS number of 4-Aminobenzaldehyde is 556-18-3.

What are the molecular formula and molecular weight of 4-Aminobenzaldehyde?

4-Aminobenzaldehyde has molecular formula C7H7NO and molecular weight 121.137 g/mol.

What are the upstream and downstream products of 4-Aminobenzaldehyde?

For 4-Aminobenzaldehyde, Upstream Products: 4-Iodoaniline, 4-Nitrotoluene, p-Toluidine; Downstream Products: 4-(Benzo[d]oxazol-2-yl)aniline, 4-Aminobenzamide, 4-(1H-Benzimidazol-2-yl)aniline.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "4-Aminobenzaldehyde (CAS 556-18-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-3206-4 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.