2-BROMO-META-XYLENE
2-Bromo-m-xylene
CAS: 576-22-7
Molecular Formula: C8H9Br
2-BROMO-META-XYLENE - Names and Identifiers
| Name | 2-Bromo-m-xylene |
| Synonyms | 2-BROMO-M-XYLENE 2-Bromo-m-xylene 2-Fluoro-m-Xylene 2-bromo-meta-xylene 2-BROMO-META-XYLENE 2,6-Dimethylbromobenzene 2,6-DIMETHYLBROMOBENZENE 2,6-Dimethyl Bromobenzene 2,6-benzene,methyl bromide 2-BROMO-1,3-DIMETHYLBENZENE 2-Bromo-1,3-dimethylbenzene 2,6-Dimethyl-1-bromobenzene 1-BROMO-2,6-DIMETHYLBENZENE Benzene,2-broMo-1,3-diMethyl- |
| CAS | 576-22-7 |
| EINECS | 209-397-7 |
| InChI | InChI=1/C8H9Br/c1-6-4-3-5-7(2)8(6)9/h3-5H,1-2H3 |
| InChIKey | MYMYVYZLMUEVED-UHFFFAOYSA-N |
2-BROMO-META-XYLENE - Physico-chemical Properties
| Molecular Formula | C8H9Br |
| Molar Mass | 185.06 |
| Density | 1.389g/mLat 25°C(lit.) |
| Melting Point | −10°C(lit.) |
| Boling Point | 206°C(lit.) |
| Flash Point | 165°F |
| Solubility | Soluble in aqueous solution. Very soluble in ethanol, soluble in acetone and benzene. |
| Vapor Presure | 0.376mmHg at 25°C |
| Appearance | Liquid |
| Specific Gravity | 1.389 |
| Color | Clear colorless to yellow |
| BRN | 1929780 |
| Storage Condition | Sealed in dry,Room Temperature |
| Refractive Index | n20/D 1.555(lit.) |
| Physical and Chemical Properties | Relative density: 1.38 Melting Point:-10-206 ℃ Boiling Point: 206 ℃ refractive index: 1.554-1.556 flash point: 73 ℃ |
2-BROMO-META-XYLENE - 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. |
| UN IDs | UN 2810 |
| WGK Germany | 3 |
| RTECS | CY9020000 |
| HS Code | 29039990 |
| Hazard Class | IRRITANT |
2-BROMO-META-XYLENE - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| Preparation | 2,6-dimethylbromobenzene is a brominated aromatic hydrocarbon, which can be prepared from 2,6-dimethylaniline through diazotization reaction. 12.12g[0.1 moles] 2,6-dimethylaniline was added in batches to the initial feed of 65ml 48% aqueous HBr. The concentrated suspension was stirred at 80 ℃ for 15min. It is then cooled to -10°C, and the solution formed by 8g[0.116 moles] NaNO2 in 35ml of water is added dropwise at a temperature not exceeding -5°C within about 1h. Add 80mg sulfamic acid. The diazonium salt suspension cooled to -10°C was then metered in about 30min into the solution formed by heating to 80°C of 13.9g[0.05 moles] FeSO4 × 7H2O in 65ml of 62% HBr aqueous solution. Then, the reaction mixture is stirred at 80°C for another 1h, cooled to room temperature and mixed with 125ml of water, the phases are separated and the aqueous phase is extracted three times at 50ml dichloromethane each time. The combined organic phase was washed twice with 25ml of water each time, dried and concentrated under reduced pressure. 17.4g of oil was obtained, which contained 83% 2,6-dimethylbromobenzene (78% of the theoretical value) according to GC. |
| category | toxic substances |
| toxicity classification | highly toxic |
| acute toxicity | vein-mouse LD50: 56 mg/kg |
| flammability hazard characteristics | Combustible in open flame; Combustion produces toxic bromide |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; Store separately from oxidants and food additives |
| fire extinguishing agent | carbon dioxide, foam, sand, mist water |
Last Update：2024-04-10 22:29:15
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