83-38-5
2,6-Dichlorobenzaldehyde
CAS: 83-38-5
Molecular Formula: C7H4Cl2O
83-38-5 - Names and Identifiers
| Name | 2,6-Dichlorobenzaldehyde |
| Synonyms | AURORA 14017 AKOS BBS-00003170 LABOTEST-BB LT01460902 2,6-Dichloobenzaldehyde 2,6-Dichlor-Benzaldehyd 2,6-Dichlorobenzaldehyde 2,6-DICHLOROBENZALDEHYDE 2,6-dichloro-benzaldehyd o,o'-dichlorobenzaldehyde Benzaldehyde, 2,6-dichloro- |
| CAS | 83-38-5 |
| EINECS | 201-472-2 |
| InChI | InChI=1/C7H4Cl2O/c8-6-2-1-3-7(9)5(6)4-10/h1-4H |
| InChIKey | DMIYKWPEFRFTPY-UHFFFAOYSA-N |
83-38-5 - Physico-chemical Properties
| Molecular Formula | C7H4Cl2O |
| Molar Mass | 175.01 |
| Density | 1.3456 (rough estimate) |
| Melting Point | 69-71 °C (lit.) |
| Boling Point | 165°C |
| Flash Point | 135°C |
| Water Solubility | <0.1 g/100 mL at 23 ºC |
| Solubility | <1g/l insoluble |
| Vapor Presure | 0.0406mmHg at 25°C |
| Appearance | Pale yellow flakes |
| Color | White to light beige |
| BRN | 386477 |
| Storage Condition | Keep in dark place,Sealed in dry,Room Temperature |
| Stability | Stable. Incompatible with strong oxidizing agents, strong bases. Air, light and moisture sensitive. |
| Sensitive | Air Sensitive |
| Refractive Index | 1.5756 (estimate) |
| MDL | MFCD00003307 |
| Physical and Chemical Properties | Melting point 68-71°C boiling point 165°C water-soluble <0.1g/100 mL at 23°C |
| Use | Used in the synthesis of dyes, also used as fungicides and for the manufacture of herbicide 2, 6-dichlorobenzonitrile |
83-38-5 - Risk and Safety
| Risk Codes | R34 - Causes burns R36/37/38 - 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. S27 - Take off immediately all contaminated clothing. S28 - After contact with skin, wash immediately with plenty of soap-suds. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S37/39 - Wear suitable gloves and eye/face protection |
| UN IDs | UN 3261 8/PG 2 |
| WGK Germany | 2 |
| TSCA | Yes |
| HS Code | 29130000 |
| Hazard Note | Corrosive |
| Hazard Class | 8 |
| Packing Group | III |
83-38-5 - Upstream Downstream Industry
| Raw Materials | 2-Chloro-6-nitrotoluene |
83-38-5 - Introduction
Sensitive to light and air. Soluble in ethanol, ether and petroleum ether, insoluble in water. It is irritating to eyes, respiratory system and skin and can cause burns.
Last Update：2022-10-16 17:29:13
83-38-5 - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Application | 2, 6-dichlorobenzaldehyde is an important intermediate in the synthesis of benzoylurea insecticides, it is used for the synthesis of the next Intermediate 2, 6-dichlorobenzaldehyde oxime, and finally obtains the pesticide varieties such as fluifolide, difenuron, floxuramide, and picosolide. In addition, it is also an intermediate of dye and medicine. for synthetic dyes, also for fungicides and for the manufacture of herbicide 2, 6-dichlorobenzonitrile for synthetic dyes, fungicides and for the manufacture of herbicide 2,6-dichlorobenzonitrile, etc. intermediates for the synthesis of dyes, pesticides and pharmaceuticals. Mainly used for the production of acid medium B. It can also be used in the pharmaceutical industry to prepare diclofenac sodium. |
| production method | synthesis of 2, 6-dichlorobenzaldehyde with P-nitrotoluene as starting material, 2, 6-dichlorotoluene, then 2, 6-dichlorobenzaldehyde can be obtained by direct oxidation of 2, 6-dichlorotoluene, and 2, 6-dichloro-benzylchloride can also be obtained by chlorination, and then 2, 6-dichlorobenzaldehyde. 2, 6-dichlorotoluene and potassium permanganate are mixed in concentrated sulfuric acid, and 2, 6-dichlorobenzaldehyde can be obtained by one-step reaction, but there are problems of acid solution application and "three wastes" treatment, moreover, a large amount of expensive manganese salt is consumed. 2, 6-dichlorotoluene is chlorinated at 120-140 ° C. In the presence of a free radical generator such as azobisisobutyronitrile, benzoyl peroxide, tert-butyl hydroperoxide, etc, 6-dichloro-benzyl chloride. 2, 6-dichloro-benzyl chloride can be hydrolyzed under different conditions to give 2,6-dichlorobenzaldehyde. Although this method increases the side chain chlorination reaction in one step, the reaction is easy to proceed and the yield is high. In addition, 2, 6-dichloro-benzaldehyde can also be prepared by heating 2, 6-dichloro-benzylchloride in a catalyst and an aromatic sulfonic acid medium. For the synthesis of 2, 6-dichlorotoluene, see "pyrethroid Intermediate". |
Last Update：2024-04-09 21:11:58
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Raw Materials for 83-38-5