3,4-Dichlorobenzoic acid
Tech Serve Solutions supplies 3,4-Dichlorobenzoic acid (CAS: 51-44-5; Molar Mass: 191.01 g/mol), a carboxylic acid often used as a chemical intermediate. This compound serves as a building block in organic synthesis and has been employed in analytical chemistry as an internal standard. Its properties make it valuable for research and development in various chemical and pharmaceutical applications.
- Synonyms
- Cl2C6H3CO2H

Analytical Standard
Utilised as an internal standard in the precise multiresidue analysis of pharmaceuticals and personal care products, typically employing advanced techniques like UPLC-MS/MS.
Metabolic Studies
Has been used in scientific investigations to understand the metabolic fate and transformations of related chemical compounds, such as 4-chloro-3,5-dinitrobenzoic acid.
Organic Synthesis Intermediate
Serves as a valuable building block in organic chemistry for the synthesis of more complex molecules and compounds.
| Molecular weight | 191.01 |
|---|---|
| Linear formula | Cl2C6H3CO2H |
| Assay | 99% |
| Application | 3,4-Dichlorobenzoic acid was employed as internal standard during the multiresidue analysis of pharmaceuticals and personal care products by ultra performance liquid chromatography-positive/negative electrospray tandem mass spectrometry1. It was used to study the metabolic fate of 4-chloro-3,5-dinitrobenzoic acid2. |
| Melting point | 204-206 °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 3,4-Dichlorobenzoic acid used for?
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3,4-Dichlorobenzoic acid is used as an internal standard in analytical chemistry and as a building block in organic synthesis. It has also been employed in studies of metabolic pathways.
What is the CAS number and chemical formula for 3,4-Dichlorobenzoic acid?
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The CAS number for 3,4-Dichlorobenzoic acid is 51-44-5, and its linear formula is Cl2C6H3CO2H.
What grade and purity does Tech Serve Solutions supply for 3,4-Dichlorobenzoic acid?
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Tech Serve Solutions supplies 3,4-Dichlorobenzoic acid with a purity of 99%. This is typically considered a technical or research grade, and TSS does not represent it as USP, BP, or EP grade.
What are the primary safety hazards associated with 3,4-Dichlorobenzoic acid?
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3,4-Dichlorobenzoic acid is a warning irritant that can cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Appropriate personal protective equipment, including dust masks (N95), eyeshields, and gloves, should be used when handling.
How is 3,4-Dichlorobenzoic acid shipped and exported?
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Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 3,4-Dichlorobenzoic acid, adhering to all relevant shipping and export regulations.
How can I request a sample or quote for 3,4-Dichlorobenzoic acid?
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To request a sample or quote for 3,4-Dichlorobenzoic acid, please contact the Tech Serve Solutions sales team via our website or direct inquiry channels.
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