3,4-Dichlorophenol
3,4-Dichlorophenol (CAS: 95-77-2), with the molecular formula C6H4Cl2O and a molecular weight of 163.00 g/mol, is a chlorinated phenolic compound. This chemical serves as a valuable intermediate in organic synthesis, particularly within the pharmaceutical and agrochemical sectors. Its defined structure makes it a useful building block for more complex molecules, contributing to the development of new materials and active ingredients.
- Synonyms
- Cl2C6H3OH1,2-Dichloro-4-hydroxybenzene4-Hydroxy-1,2-dichlorobenzene

Organic Synthesis Intermediate
3,4-Dichlorophenol is utilized as a key intermediate in the synthesis of various organic compounds. Its reactivity allows for further functionalization, making it essential for building complex molecular structures.
Pharmaceutical Precursor
In the pharmaceutical industry, this compound can serve as a precursor for the synthesis of active pharmaceutical ingredients (APIs). Its dichlorinated structure is a common motif in certain drug molecules.
Agrochemical Development
The chemical is employed in the development of agrochemicals, including pesticides and herbicides. It acts as a building block for active ingredients designed for crop protection.
| Molecular weight | 163.00 |
|---|---|
| Linear formula | Cl2C6H3OH |
| Assay | 99% |
| Grade | purum |
| Boiling point | 145-146 °C(lit.) |
| Melting point | 65-67 °C(lit.) |


Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H318Causes serious eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Transport (UN / ADR) | UN 2020 6.1 / PGIII |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-36/38 |
| Safety statements (S) | 26-28 |
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 3,4-Dichlorophenol used for?
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3,4-Dichlorophenol (CAS: 95-77-2) is primarily used as an intermediate in organic synthesis, particularly for pharmaceuticals and agrochemicals. It serves as a building block for creating more complex molecules.
What are the CAS number and chemical formula for 3,4-Dichlorophenol?
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The CAS number for 3,4-Dichlorophenol is 95-77-2. Its linear chemical formula is Cl2C6H3OH, and its molecular weight is 163.00 g/mol.
What grade and purity does Tech Serve Solutions supply for 3,4-Dichlorophenol?
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Tech Serve Solutions supplies 3,4-Dichlorophenol with a purity of 99% (Purum grade). We do not represent this product as USP, BP, or EP grade.
How should 3,4-Dichlorophenol be handled safely?
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3,4-Dichlorophenol is classified as Dangerous. It is harmful if swallowed (H302), causes skin irritation (H315), and causes serious eye damage (H318). Handle with appropriate personal protective equipment (e.g., gloves, eye protection) and ensure adequate ventilation. Avoid contact with skin, eyes, and clothing. Refer to the Safety Data Sheet for detailed handling instructions.
How is 3,4-Dichlorophenol packed, shipped, and exported?
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3,4-Dichlorophenol is carefully packed according to international shipping regulations for hazardous materials. As a global supplier, Tech Serve Solutions handles all export documentation and logistics to ensure safe and compliant delivery worldwide.
How can I request a sample or a quote for 3,4-Dichlorophenol?
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To request a sample or obtain a quote for 3,4-Dichlorophenol, please visit our website or contact our sales team directly. We will be pleased to assist you with your inquiry.
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