2,5-Dichlorobenzoic acid
- CAS No.
- 50-79-3
- Chemical Name:
- 2,5-Dichlorobenzoic acid
- Synonyms
- Benzoic acid, 2,5-dichloro-;2,5-DBA;2,5-Dichlorobe;RARECHEM AL BO 0355;2,5-Dichlorobenzoic a;Irsogladine Impurity 2;Irsogladine Impurity S;5-Dichlorobenzoic acid;2,5-dichloro-benzoicaci;2,5-DICHLOROBENZOIC ACID
- CBNumber:
- CB7121450
- Molecular Formula:
- C7H4Cl2O2
- Molecular Weight:
- 191.01
- MDL Number:
- MFCD00002416
- MOL File:
- 50-79-3.mol
- MSDS File:
- SDS
| Melting point | 151-154 °C (lit.) |
|---|---|
| Boiling point | 301 °C (lit.) |
| Density | 1.4410 (rough estimate) |
| refractive index | 1.4590 (estimate) |
| Flash point | 300-302°C |
| storage temp. | Store below +30°C. |
| solubility | 0.8g/l |
| form | Powder |
| pka | 2.51±0.25(Predicted) |
| color | White to beige |
| Water Solubility | <0.1 g/100 mL at 19 ºC |
| BRN | 973353 |
| Stability | Stable. |
| InChI | 1S/C7H4Cl2O2/c8-4-1-2-6(9)5(3-4)7(10)11/h1-3H,(H,10,11) |
| InChIKey | QVTQYSFCFOGITD-UHFFFAOYSA-N |
| SMILES | OC(=O)c1cc(Cl)ccc1Cl |
| CAS DataBase Reference | 50-79-3(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| FDA UNII | KP7CMR0GSD |
| NIST Chemistry Reference | Benzoic acid, 2,5-dichloro-(50-79-3) |
| EPA Substance Registry System | Benzoic acid, 2,5-dichloro- (50-79-3) |
| UNSPSC Code | 12352106 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
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|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H319-H335 | |||||||||
| Precautionary statements | P261-P264-P271-P280-P302+P352-P305+P351+P338 | |||||||||
| target organs | Respiratory system | |||||||||
| PPE | dust mask type N95 (US), Eyeshields, Gloves | |||||||||
| Hazard Codes | Xi | |||||||||
| Risk Statements | 36/37/38 | |||||||||
| Safety Statements | 26-36-24/25 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | DG6825000 | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 29163900 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| Hazard Classifications | Eye Irrit. 2 Skin Irrit. 2 STOT SE 3 |
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| NFPA 704 |
|
2,5-Dichlorobenzoic acid price More Price(70)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 144940 | 2,5-Dichlorobenzoic acid 97% | 50-79-3 | 50g | $118 | 2026-04-30 | Buy |
| Sigma-Aldrich | 144940 | 2,5-Dichlorobenzoic acid 97% | 50-79-3 | 250g | $356 | 2026-04-30 | Buy |
| TCI Chemical | D0338 | 2,5-Dichlorobenzoic Acid >98.0%(GC)(T) | 50-79-3 | 25g | $37 | 2026-04-30 | Buy |
| TCI Chemical | D0338 | 2,5-Dichlorobenzoic Acid >98.0%(GC)(T) | 50-79-3 | 100g | $88 | 2026-04-30 | Buy |
| Usbiological | 271160 | 2,5-Dichlorobenzoic acid Asreported | 50-79-3 | 500g | $360 | 2026-06-03 | Buy |
2,5-Dichlorobenzoic acid Chemical Properties, Uses, Production
Chemical Properties
Needle crystals or white crystalline powder. Soluble in ethanol and ether, soluble in hot water. Some volatilize in the vapor.
Uses
2,5-Dichlorobenzoic acid was used as calibration standard to investigate the gas-phase OH reaction products of biphenyl, monochlorobiphenyl and dichlorophenyl
Application
2,5-Dichlorobenzoic acid is used in organic synthesis and pesticide intermediates. It is used to synthesize herbicides chloramben, 2,5-Dichloro-3-nitrobenzoic acid, etc. The pesticide has less phytotoxicity and is not affected by rainy days.
Preparation
2,5-Dichlorobenzoic acid is obtained by reacting p-dichlorobenzene with phosgene to obtain 2,5-dichlorobenzoyl chloride, which is then hydrolyzed.
Definition
ChEBI: 2,5-dichlorobenzoic acid is a chlorobenzoic acid that is benzoic acid in which the ring hydrogens at positions 2 and 5 are substituted by chloro groups. It is a chlorobenzoic acid and a dichlorobenzene.
General Description
Needles (from water) or white powder.
Air & Water Reactions
Insoluble in water.
Reactivity Profile
Carboxylic acids donate hydrogen ions if a base is present to accept them. They react in this way with all bases, both organic (for example, the amines) and inorganic. Their reactions with bases, called "neutralizations", are accompanied by the evolution of substantial amounts of heat. Neutralization between an acid and a base produces water plus a salt. Carboxylic acids with six or fewer carbon atoms are freely or moderately soluble in water; those with more than six carbons are slightly soluble in water. Soluble carboxylic acid dissociate to an extent in water to yield hydrogen ions. The pH of solutions of carboxylic acids is therefore less than 7.0. Many insoluble carboxylic acids react rapidly with aqueous solutions containing a chemical base and dissolve as the neutralization generates a soluble salt. Carboxylic acids in aqueous solution and liquid or molten carboxylic acids can react with active metals to form gaseous hydrogen and a metal salt. Such reactions occur in principle for solid carboxylic acids as well, but are slow if the solid acid remains dry. Even "insoluble" carboxylic acids may absorb enough water from the air and dissolve sufficiently in 2,5-Dichlorobenzoic acid to corrode or dissolve iron, steel, and aluminum parts and containers. Carboxylic acids, like other acids, react with cyanide salts to generate gaseous hydrogen cyanide. The reaction is slower for dry, solid carboxylic acids. Insoluble carboxylic acids react with solutions of cyanides to cause the release of gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by the reaction of carboxylic acids with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. Carboxylic acids, especially in aqueous solution, also react with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), to generate flammable and/or toxic gases and heat. Their reaction with carbonates and bicarbonates generates a harmless gas (carbon dioxide) but still heat. Like other organic compounds, carboxylic acids can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. A wide variety of products is possible. Like other acids, carboxylic acids may initiate polymerization reactions; like other acids, they often catalyze (increase the rate of) chemical reactions.
Fire Hazard
Flash point data for 2,5-Dichlorobenzoic acid are not available; however, 2,5-Dichlorobenzoic acid is probably combustible.
Purification Methods
Crystallise the acid from water. [Beilstein 9 IV 1005.] Aromatic acid impurities (to <0.05%) can be removed via the (±)--methylbenzylamine salt as described for 2,4-dichlorobenzoic acid [Ley & Yates Organic Process Research & Development 12 120 2008.]
2,5-Dichlorobenzoic acid Preparation Products And Raw materials
Raw materials
1of2
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Beijing Century Richap Chemistry Co., Ltd. | 010-64446226 13146983882 | info@bj-newcenturychem.com | China | 111 | 55 |
| Suzhou TaCheng Pharmaceutical Co., Ltd. | 0512-68253519 18260240186; | 122141838@qq.com | China | 73 | 55 |
| Speranza Chemical Co., Ltd. | 0755-21030354 18126410231 | sales@speranzachem.com | China | 632 | 58 |
| Hunan chemfish Scientific co.,ltd | 85567275 18932438858 | sales06@chemfish.com | China | 5003 | 58 |
| Changzhou Ditong chemical Co.,Ltd. | 0519-88298848 18118010980 | info@edengenechem.com | China | 622 | 58 |
| Changzhou Zeyuan Pharmaceutical Technology Co., Ltd | 19026388314 | 2589694173@qq.com | China | 164 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| INTATRADE GmbH | +49 3493/605464 | sales@intatrade.de | Germany | 3563 | 66 |
| future industrial shanghai co., ltd | 400-0066400 13621662912 | sales@jonln.com | China | 1989 | 65 |
Related articles
- Synthesis Methods of 2,5 - Dichlorobenzoic Acid
- 2,5-dichlorobenzoic acid, a chlorobenzoic acid with chloro groups at positions 2 and 5 of the benzene ring, has two synthesis ....
- May 14,2025
View Latest Price from 2,5-Dichlorobenzoic acid manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-09-17 | 2,5-Dichlorobenzoic acid
50-79-3
|
$30.00 | 1KG | 99% | 300MT/year | Speranza Chemical Co., Ltd. | |
 |
2025-04-15 | 2,5-Dichlorobenzoic acid
50-79-3
|
$65.00 | 1kg | 99% | 5000kg/week | Hebei Zhuanglai Chemical Trading Co.,Ltd | |
 |
2025-04-04 | 2,5-Dichlorobenzoic acid
50-79-3
|
1kg | 98% | 1Ton | Henan Aochuang Chemical Co.,Ltd. |
-
- 2,5-Dichlorobenzoic acid
50-79-3
- $30.00
- 99%
- Speranza Chemical Co., Ltd.
-
- 2,5-Dichlorobenzoic acid
50-79-3
- $65.00
- 99%
- Hebei Zhuanglai Chemical Trading Co.,Ltd
-
- 2,5-Dichlorobenzoic acid
50-79-3
- 98%
- Henan Aochuang Chemical Co.,Ltd.
