4-Amino-3-chlorophenol hydrochloride
4-Amino-3-chlorophenol hydrochloride (CAS: 52671-64-4) is an organic compound with the formula H2NC6H3(Cl)OH · HCl. This chemical intermediate, characterised by its aromatic ring substituted with amino, chloro, and hydroxyl groups, along with its hydrochloride salt form, is primarily utilised in organic synthesis. It serves as a valuable building block for the creation of more complex molecules in research and industrial chemical processes.
- IUPAC
- 2-Chloro-4-hydroxyaniline hydrochloride
- Synonyms
- 2-Chloro-4-hydroxyaniline hydrochloride

Organic Synthesis
Serves as a versatile building block for constructing complex organic molecules. Its functional groups allow for various chemical transformations in multi-step synthesis pathways.
Pharmaceutical Intermediates
Can be used in the synthesis of active pharmaceutical ingredients (APIs) and related compounds. Its structure lends itself to incorporation into various drug discovery programs.
Research and Development
Employed in laboratory settings for research purposes, enabling chemists to explore new chemical reactions and develop novel compounds.
| Molecular weight | 180.03 |
|---|---|
| Linear formula | H2NC6H3(Cl)OH · HCl |
| Assay | 98% |
| Melting point | 255 °C (dec.)(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
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-Amino-3-chlorophenol hydrochloride typically used for?
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4-Amino-3-chlorophenol hydrochloride (CAS: 52671-64-4) is primarily used as a building block in organic synthesis, particularly in the development of pharmaceutical intermediates and other complex organic molecules in research and industrial settings.
What are the CAS number and chemical formula for 4-Amino-3-chlorophenol hydrochloride?
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The CAS number is 52671-64-4 and the chemical formula is H2NC6H3(Cl)OH · HCl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Amino-3-chlorophenol hydrochloride with an assay of 98%. This is a technical grade product and is not represented as USP, BP, EP, or any other pharmacopoeial standard.
What are the safety considerations when handling 4-Amino-3-chlorophenol hydrochloride?
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4-Amino-3-chlorophenol hydrochloride is classified as a Warning substance with hazards H315 (Causes skin irritation), H319 (Causes serious eye irritation), and H335 (May cause respiratory irritation). Handle with appropriate personal protective equipment including a dust mask type N95 (US), eyeshields, and gloves in a well-ventilated area. Follow precautionary statements P261 and P305 + P351 + P338.
How is 4-Amino-3-chlorophenol hydrochloride packed and shipped?
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4-Amino-3-chlorophenol hydrochloride is carefully packed to maintain its integrity during transit and is exported globally by Tech Serve Solutions.
How can I request a sample or quote for 4-Amino-3-chlorophenol hydrochloride?
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To request a sample or a quotation for 4-Amino-3-chlorophenol hydrochloride, please contact the Tech Serve Solutions sales team through our website or by phone.
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