4-Aminobenzaldehyde
- CAS No.
- 556-18-3
- Chemical Name:
- 4-Aminobenzaldehyde
- Synonyms
- P-AMINOBENZALDEHYDE;JACS-556-18-3;007-095-4652327;p-Formylaniline;4-formylaniline;4-Aminobenzaldeyde;4-amino-benzaldehyd;4-AMINOBENZALDEHYDE;p-Aminobenzaldenhyde;Benzaldehyde, 4-amino
- CBNumber:
- CB2281922
- Molecular Formula:
- C7H7NO
- Molecular Weight:
- 121.14
- MDL Number:
- MFCD00038137
- MOL File:
- 556-18-3.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Melting point | 77-79°C |
|---|---|
| Boiling point | 138-139 C |
| Density | 0,868 g/cm |
| refractive index | 1.5323 (estimate) |
| storage temp. | 2-8°C |
| pka | 1.88±0.10(Predicted) |
| form | Solid |
| color | Light yellow to yellow |
| InChI | InChI=1S/C7H7NO/c8-7-3-1-6(5-9)2-4-7/h1-5H,8H2 |
| InChIKey | VATYWCRQDJIRAI-UHFFFAOYSA-N |
| SMILES | C(=O)C1=CC=C(N)C=C1 |
| CAS DataBase Reference | 556-18-3(CAS DataBase Reference) |
| FDA UNII | 74Q1671TS1 |
| EPA Substance Registry System | Benzaldehyde, 4-amino- (556-18-3) |
| UNSPSC Code | 12352200 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|---|---|
| Signal word | Warning |
| Hazard statements | H302-H315-H317-H319-H335 |
| Precautionary statements | P261-P280-P305+P351+P338 |
| target organs | Respiratory system |
| Hazard Codes | Xi,Xn |
| Risk Statements | 36/37/38-43-22 |
| Safety Statements | 26-36/37/39-36-36/37 |
| RIDADR | UN 1307 |
| WGK Germany | 3 |
| RTECS | CU4400000 |
| TSCA | TSCA listed |
| Storage Class | 11 - Combustible Solids |
| Hazard Classifications | Acute Tox. 4 Oral Eye Irrit. 2 Skin Irrit. 2 Skin Sens. 1 STOT SE 3 |
4-Aminobenzaldehyde price More Price(29)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Biosynth | FA71226 | 4-Aminobenzaldehyde | 556-18-3 | 0.5g | $334.37 | 2026-06-04 | Buy |
| Biosynth | FA71226 | 4-Aminobenzaldehyde | 556-18-3 | 1g | $445.82 | 2026-06-04 | Buy |
| Biosynth | FA71226 | 4-Aminobenzaldehyde | 556-18-3 | 2g | $668.74 | 2026-06-04 | Buy |
| Biosynth | FA71226 | 4-Aminobenzaldehyde | 556-18-3 | 5g | $891.6 | 2026-06-04 | Buy |
| Biosynth | FA71226 | 4-Aminobenzaldehyde | 556-18-3 | 10g | $1114.6 | 2026-06-04 | Buy |
4-Aminobenzaldehyde Chemical Properties, Uses, Production
Description
4-Aminobenzaldehyde can be made into polymer with a certain conductivity and corrosion resistance, and the combination of stainless steel is better than the epoxy resin. It can be used as intermediate of pharmaceutical and dye. It is also used in organic synthesis. Additionally, it can react with Carbonyl dichloride to get 4-Formylphenyl isocyanate.
Chemical Properties
Yellow crystalline powder. Melting point 71-72℃. Soluble in alcohol, benzene, insoluble in water, very easy to polymerize.
Uses
4-Aminobenzaldehyde (p-aminobenzaldehyde) is a useful synthetic reagent and monomer that can be used to synthesize monoazo dyes and photocurable ion exchange resins. 4-Aminobenzaldehyde is also a corrosion inhibitor of metals.
Preparation
4-aminobenzaldehyde is obtained from p-nitrotoluene by oxidation, reduction, sodium sulfide, and sodium hydroxide dissolved in water, filtration, and filtrate heated to 68 ° C to add sulfur powder, at 98 ° C reaction for 18min to get more sodium sulfide solution. Add 65% ethanol and p-nitrotoluene, reaction at 80-86 ℃ for 1.5h, recovery of ethanol, and steam distillation to remove by-products p-aminotoluene. The reaction solution is extracted with benzene, distilled by water vapor, cooled, filtered, and dried to obtain the finished product.
Definition
ChEBI: P-aminobenzaldehyde is a member of benzaldehydes.
Synthesis Reference(s)
Organic Syntheses, Coll. Vol. 4, p. 31, 1963
Tetrahedron Letters, 30, p. 251, 1989 DOI: 10.1016/S0040-4039(00)95173-6
References
[1] O. A. NURKENOV. Synthesis, structure and chemical transformations of 4-aminobenzaldehyde[J]. Russian Journal of General Chemistry, 2013, 83 10: 1864-1868. DOI:10.1134/S1070363213100113.
[2] MD. J. SHARIF Tatsuya T Seiji Yamazoe. Selective Hydrogenation of 4-Nitrobenzaldehyde to 4-Aminobenzaldehyde by Colloidal RhCu Bimetallic Nanoparticles[J]. Topics in Catalysis, 2014, 57 10-13: 1049-1053. DOI:10.1007/s11244-014-0269-5.
[3] KUNIO KIMURA. Self-Assembling Polycondensation of 4-Aminobenzaldehyde. Preparation of Star-Like Aggregates of Cone-Shaped Poly(azomethine) Crystals[J]. Polymer Journal, 2003, 35 5: 455-459. DOI:10.1295/polymj.35.455.
[4] A. HALSTIANYe. Yu V A S Вushuiev. Ozonation of 4-aminotoluene as a new method of synthesis of 4-aminobenzaldehyde – an intermediate for the production of anti-tuberculosis drugs[J]. Current issues in pharmacy and medicine: science and practice, 2022, 18 1. DOI:10.14739/2409-2932.2022.1.249620.
[5] Lei Z U .Preparation and Application of 4-Aminobenzaldehyde and Its Polymer[J].Journal of Yanbian University(Natural Science), 2008.
4-Aminobenzaldehyde Preparation Products And Raw materials
Raw materials
Preparation Products
1of3
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 18621169109 | market03@meryer.com | China | 27963 | 58 |
| Beijing HwrkChemical Technology Co., Ltd | 89508211 18501085097 | sales.bj@hwrkchemical.com | China | 9407 | 55 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
| Capot Chemical Co., Ltd | +86 (0) 571 85 58 67 18 | China | 18187 | 66 | |
| Beijing Ouhe Technology Co., Ltd | 13552068683 13522913783 | 2355560935@qq.com | China | 11777 | 60 |
| JinYan Chemicals(ShangHai) Co.,Ltd. | 13817811078 | sales@jingyan-chemical.com | China | 9963 | 60 |
| Pure Chemistry Scientific Inc. | 001-857-928-2050 or 1-888-588-9418 | sales@chemreagents.com | United States | 10174 | 62 |
| Hunan Hui Bai Shi Biotechnology Co., Ltd. | 0731-85526065 13308475853 | ivy@hnhbsj.com | China | 7236 | 62 |
| Nanjing Vital Chemical Co., Ltd. | Please Send Email 18652950785 | chemweiao@163.com | China | 4368 | 65 |
| ZhengZhou HuaWen Chemical Co.Ltd | 0370-2785118 17550508557 | 675141927@qq.com | China | 3201 | 55 |
View Latest Price from 4-Aminobenzaldehyde manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-09-17 | 4-Aminobenzaldehyde
556-18-3
|
0.99 | RongNa Biotechnology Co.,Ltd | ||||
 |
2026-03-20 | 4-Aminobenzaldehyde
556-18-3
|
$10.00 | 100KG | 99% | 100 mt | Hebei Chuanghai Biotechnology Co., Ltd | |
 |
2025-04-04 | 4-Aminobenzaldehyde
556-18-3
|
1KG | 98% | 1ton | Henan Aochuang Chemical Co.,Ltd. |
-
- 4-Aminobenzaldehyde
556-18-3
- 0.99
- RongNa Biotechnology Co.,Ltd
-
- 4-Aminobenzaldehyde
556-18-3
- $10.00
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
-
- 4-Aminobenzaldehyde
556-18-3
- 98%
- Henan Aochuang Chemical Co.,Ltd.
