| Company Name: |
Alfa Aesar |
| Tel: |
400-6106006 |
| Email: |
saleschina@alfa-asia.com |
| Company Name: |
Ark Pharm, Inc. |
| Tel: |
847-367-3680 |
| Email: |
sales@arkpharminc.com |
- 2,4-DIBROMOTOLUENE
-
-
2025-04-04
- CAS:31543-75-6
- Min. Order: 1KG
- Purity: 98%
- Supply Ability: 1Ton
- 2,4-DIBROMOTOLUENE
-
- $1.00
-
2024-07-21
- CAS:31543-75-6
- Min. Order: 1Kg
- Purity: 98%
- Supply Ability: 20T
- 2,4-DIBROMOTOLUENE
-
- $3.00
-
2020-01-10
- CAS:31543-75-6
- Min. Order: 1KG
- Purity: 98%
- Supply Ability: 200KG
|
| | 2,4-DIBROMOTOLUENE Basic information |
| Product Name: | 2,4-DIBROMOTOLUENE | | Synonyms: | 1,3-Dibromo-4-methylbenzene;2,4-dibromo-1-methyl-benzen;Benzene, 2,4-dibromo-1-methyl-;Benzene,2,4-dibromo-1-methyl-;2,4-DIBROMOTOLUENE;1-Methyl-2,4-dibromobenzene;NSC 139877;2,4-Second Bromotoluene | | CAS: | 31543-75-6 | | MF: | C7H6Br2 | | MW: | 249.93 | | EINECS: | 250-689-9 | | Product Categories: | Aromatic Hydrocarbons (substituted) & Derivatives;Halogen toluene;Bromine Compounds;bc0001 | | Mol File: | 31543-75-6.mol |  |
| | 2,4-DIBROMOTOLUENE Chemical Properties |
| Melting point | -10 °C | | Boiling point | 243 °C | | density | 1.85 | | Fp | 109℃ | | refractive index | 1.601 | | storage temp. | Sealed in dry,Room Temperature | | form | Liquid | | color | Light orange to Yellow to Green | | InChI | InChI=1S/C7H6Br2/c1-5-2-3-6(8)4-7(5)9/h2-4H,1H3 | | InChIKey | GHWYNNFPUGEYEM-UHFFFAOYSA-N | | SMILES | C1(C)=CC=C(Br)C=C1Br | | CAS DataBase Reference | 31543-75-6(CAS DataBase Reference) | | EPA Substance Registry System | 2,4-Dibromotoluene (31543-75-6) |
| Hazard Codes | Xi | | TSCA | TSCA listed | | HS Code | 2903998090 |
| | 2,4-DIBROMOTOLUENE Usage And Synthesis |
| Chemical Properties | light yellow liquid | | Synthesis Reference(s) | The Journal of Organic Chemistry, 53, p. 5545, 1988 DOI: 10.1021/jo00258a030 | | Synthesis | General procedure: 3,3'-dimethylbiphenyl, 2-bromo-5-fluorotoluene, 2-bromotoluene and 2,4-dibromotoluene were synthesized using the following general procedure: boron trifluoride (TFB) was pre-synthesized prior to use according to the literature methods [7-9]. The corresponding aromatics (4 mmol) were dissolved in Freon R 113 (4.1 mL) and the solution was cooled to -25 °C. The corresponding TFB (2 mmol) was slowly added to the aromatic solution under vigorous stirring, followed by removal of the cooling bath. The reaction mixture was stirred at 45 °C for 5 hours. Upon completion of the reaction, the reaction mixture was treated with H2O and filtered to remove the metal fluoride precipitate. Subsequently, the liquid phase was treated with 10% NaNO2 aqueous solution to remove traces of bromine and 30% CaCl2 aqueous solution to remove F- anions. Finally, Freon R 113 was removed from the organic phase by evaporation and the resulting product was purified by rapid chromatography on silica gel, the eluent being a hexane:EtOAc solvent mixture. | | References | [1] Journal of Fluorine Chemistry, 2016, vol. 192, p. 120 - 123 |
| | 2,4-DIBROMOTOLUENE Preparation Products And Raw materials |
|