2,5-Dichlorobenzoic acid
2,5-Dichlorobenzoic acid (CAS: 50-79-3) is an organic compound with the molecular formula Cl2C6H3CO2H and a molecular weight of 191.01 g/mol. It functions as a key building block in organic synthesis. This carboxylic acid derivative is utilised in chemical research and development, notably in investigations concerning environmental chemistry, such as studying gas-phase reaction products of chlorinated aromatic compounds. Tech Serve Solutions offers this chemical for laboratory and industrial applications.
- Synonyms
- 2,5-Dichlorobenzoic acidCl2C6H3CO2H

Calibration Standard in Environmental Chemistry
2,5-Dichlorobenzoic acid serves as a crucial calibration standard. It has been employed in studies investigating the gas-phase reaction products of biphenyl, monochlorobiphenyl, and dichlorophenyl compounds with hydroxyl radicals.
Organic Synthesis Building Block
As a dichlorinated benzoic acid derivative, this compound is a versatile building block for the synthesis of more complex organic molecules in research and development settings. Its structure allows for various chemical transformations.
Research and Development
This chemical is used in laboratories for a range of research purposes, including the exploration of new synthetic routes and the development of novel chemical entities.
| Molecular weight | 191.01 |
|---|---|
| Linear formula | Cl2C6H3CO2H |
| Assay | 97% |
| Boiling point | 301 °C(lit.) |
| Application | 2,5-Dichlorobenzoic acid was used as calibration standard to investigate the gas-phase OH reaction products of biphenyl, monochlorobiphenyl and dichlorophenyl1. |
| Melting point | 151-154 °C(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 2,5-Dichlorobenzoic acid used for?
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2,5-Dichlorobenzoic acid is primarily used as a building block in organic synthesis and as a calibration standard in environmental chemistry research, particularly for investigating reactions of chlorinated aromatic compounds.
What is the CAS number and chemical formula for 2,5-Dichlorobenzoic acid?
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The CAS number for 2,5-Dichlorobenzoic acid is 50-79-3, and its linear chemical formula is Cl2C6H3CO2H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2,5-Dichlorobenzoic acid with an assay of 97%. This product is not represented as USP, BP, EP, or any pharmacopoeia grade; it is suitable for research and technical applications.
How should 2,5-Dichlorobenzoic acid be handled safely?
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2,5-Dichlorobenzoic acid is classified with GHS07 symbol and a 'Warning' signal word. It is associated with hazard statements H315 (Causes skin irritation), H319 (Causes serious eye irritation), and H335 (May cause respiratory irritation). Handle with appropriate personal protective equipment including dust mask type N95, eyeshields, and gloves. Ensure adequate ventilation.
Does Tech Serve Solutions export this chemical?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 2,5-Dichlorobenzoic acid, for research and industrial use.
How can I request a quote or sample for 2,5-Dichlorobenzoic acid?
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To request a quote or sample for 2,5-Dichlorobenzoic acid, please contact our sales team via the website or through the provided contact information, specifying the CAS number 50-79-3.
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