4-Aminophenol
4-Aminophenol (CAS: 123-30-8), with the molecular formula H₂NC₆H₄OH and a molecular weight of 109.13 g/mol, is a crucial organic compound. It serves as a vital intermediate and building block in various chemical syntheses, particularly in the production of pharmaceuticals and dyes. This compound is essential for researchers and industrial chemists engaged in organic synthesis and material science.
- IUPAC
- 4-Hydroxyaniline
- Synonyms
- 4-Hydroxyanilinep-Aminophenolp-Hydroxyaniline4-Hydroxyphenylamine

Pharmaceutical Intermediate
4-Aminophenol is a key precursor in the synthesis of paracetamol (acetaminophen), a widely used analgesic and antipyretic. It is also used in the production of other pharmaceutical agents.
Dye Manufacturing
This compound is employed in the synthesis of various azo dyes and other colorants. Its chemical structure allows for incorporation into complex dye molecules.
Organic Synthesis Reagent
As an organic building block, 4-Aminophenol is utilised in diverse chemical reactions for the creation of complex organic molecules and materials.
Polymer Science
It can be used as a monomer or additive in the development of specific polymers and resins, contributing unique properties to the final material.
| Molecular weight | 109.13 |
|---|---|
| Linear formula | H2NC6H4OH |
| Assay | ≥99% (HPLC) |
| Melting point | 185-189 °C(lit.)186-188 °C |



Hazard statements
- H302Harmful if swallowed
- H341Suspected of causing genetic defects
- H410Very toxic to aquatic life with long-lasting effects
Precautionary statements
- P273Avoid release to the environment
- P281Use personal protective equipment as required
- P501Dispose of contents and container per local regulations
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Flash point | 195 °C / 383 °F |
| Transport (UN / ADR) | UN 2512 6.1 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn,N |
| Risk statements (R) | 20/22-50/53-68 |
| Safety statements (S) | 28-36/37-60-61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 4-Aminophenol used for?
+
4-Aminophenol is primarily used as an intermediate in the synthesis of paracetamol and other pharmaceuticals, as well as in the production of dyes and in general organic synthesis.
What is the CAS number and formula for 4-Aminophenol?
+
The CAS number for 4-Aminophenol is 123-30-8, and its molecular formula is H₂NC₆H₄OH.
What grade and purity does Tech Serve Solutions supply for 4-Aminophenol?
+
Tech Serve Solutions supplies 4-Aminophenol with an assay of ≥99% (HPLC). We do not represent this product as USP, BP, or EP grade.
How should 4-Aminophenol be handled safely?
+
4-Aminophenol is harmful if swallowed or inhaled (H302 + H332), suspected of causing genetic defects (H341), and very toxic to aquatic life with long-lasting effects (H410). Handle with appropriate personal protective equipment including a dust mask (N95), eyeshields, face shields, and gloves. Ensure adequate ventilation and avoid release to the environment.
How is 4-Aminophenol packed and shipped?
+
4-Aminophenol is packed and shipped in accordance with international regulations for hazardous materials, identified as UN 2512, Class 6.1, Packing Group III.
How can I request a sample or quote for 4-Aminophenol?
+
To request a sample or quote, please contact our sales team through the website or by phone.
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis