2,5-DICHLOROBENZOIC ACID
2,5-Dichlorobenzoic acid
CAS: 50-79-3
Molecular Formula: C7H4Cl2O2
2,5-DICHLOROBENZOIC ACID - Names and Identifiers
| Name | 2,5-Dichlorobenzoic acid |
| Synonyms | AI3-33415 NSC 41889 CCRIS 8609 BRN 0973353 RARECHEM AL BO 0355 2,5-Dichlorobenzoate 2,5-Dichlorobenzoic a Irsogladine Impurity S 2,5-dichloro-benzoicaci 2,5-Dichlorobenzoic acid 2,5-DICHLOROBENZOIC ACID Benzoic acid, 2,5-dichloro- 1,2-DICHLOROBENZENE PESTANAL |
| CAS | 50-79-3 |
| EINECS | 200-065-7 |
| InChI | InChI=1/C7H4Cl2O2/c8-4-1-2-6(9)5(3-4)7(10)11/h1-3H,(H,10,11) |
2,5-DICHLOROBENZOIC ACID - Physico-chemical Properties
| Molecular Formula | C7H4Cl2O2 |
| Molar Mass | 191.01 |
| Density | 1.4410 (rough estimate) |
| Melting Point | 151-154 °C (lit.) |
| Boling Point | 301 °C (lit.) |
| Flash Point | 300-302°C |
| Water Solubility | <0.1 g/100 mL at 19 ºC |
| Solubility | 0.8g/l |
| Vapor Presure | 0mmHg at 25°C |
| Appearance | White crystalline powder |
| Color | White to beige |
| BRN | 973353 |
| pKa | 2.51±0.25(Predicted) |
| Storage Condition | Store below +30°C. |
| Stability | Stable. |
| Refractive Index | 1.4590 (estimate) |
| MDL | MFCD00002416 |
| Physical and Chemical Properties | Needle-like crystals. Melting point 154 °c, boiling point 301 °c. Soluble in ethanol and ether, soluble in hot water. There is some Volatilization in the vapor. |
2,5-DICHLOROBENZOIC ACID - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| RTECS | DG6825000 |
| TSCA | Yes |
| HS Code | 29163900 |
2,5-DICHLOROBENZOIC ACID - Nature
Open Data Verified Data
needle-like crystals. Melting point 154 °c, boiling point 301 °c. Soluble in hot water, soluble in ethanol and ether. There is some Volatilization in the vapor.
Last Update：2024-01-02 23:10:35
2,5-DICHLOROBENZOIC ACID - Preparation Method
Open Data Verified Data
This product contains M-chlorobenzoic acid peroxide is 80% ~ 85%, the rest is m-chlorobenzoic acid. It is widely used in cyclization reaction, Baeyer-Villiger reaction, N-oxidation reaction and S-oxidation reaction. It can be used as a synthetic medicine, pesticide and other fine chemical products of the oxidant; In addition, sometimes also used as a bleaching agent.
Last Update：2022-01-01 10:43:26
2,5-DICHLOROBENZOIC ACID - Preparation Method
Open Data Verified Data
produced by reaction of M-chlorobenzoyl chloride with hydrogen peroxide.
Last Update：2022-01-01 10:43:26
2,5-DICHLOROBENZOIC ACID - Use
Open Data Verified Data
This product in the pesticide industry for the production of herbicides grass flat, Bean Kewei, etc., the pesticide less harm, not affected by the rain.
Last Update：2022-01-01 10:43:25
2,5-DICHLOROBENZOIC ACID - Safety
Open Data Verified Data
packaging using 25kg lined plastic bag cardboard barrel.
Last Update：2022-01-01 10:43:27
2,5-DICHLOROBENZOIC ACID - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | as an intermediate in organic synthesis. It is used for synthetic herbicides such as bean Kewei and ground grass. The pesticide has less pesticide damage and is not affected by rainy days. Used as pesticide and pharmaceutical intermediate |
| Production method | 1. The phosgene method is obtained by reacting p-dichlorobenzene with phosgene to obtain 2, 5-dichlorobenzoyl chloride, which is then hydrolyzed. 2. The chloromethylation method is obtained by the action of p-dichlorobenzene and paraformaldehyde, and then oxidized by potassium permanganate. The yield of chloromethylation of p-dichlorobenzene was 53.4%, and the yield of the third oxidation reaction was 83%. 3. Trichlorobenzene method uses 1,2, 4-trichlorobenzene as raw material to prepare 2,5-dichlorobenzonitrile and then is obtained by alkaline hydrolysis. 4. Benzoyl chloride method is obtained by chlorination and hydrolysis of benzoyl chloride. The chlorination temperature of benzoyl chloride is controlled between 35-45 ℃, and the main component of the chloride obtained is 2, 5-dichlorobenzoyl chloride (content 65%), which is hydrolyzed at 40-50 ℃ in the presence of concentrated sulfuric acid. 5. p-dichlorobenzene carbon tetrachloride method. |
Last Update：2024-04-09 15:16:50
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