1,4-DIBROMO-2,3-BUTANEDIONE
1,4-DIBROMO-2,3-BUTANEDIONE
CAS: 6305-43-7
Molecular Formula: C4H4Br2O2
1,4-DIBROMO-2,3-BUTANEDIONE - Names and Identifiers
| Name | 1,4-DIBROMO-2,3-BUTANEDIONE |
| Synonyms | 1,4-DIBROMODIACETYL SYM-DIBROMODIACETYL 2,2'-dibromobiacetyl 1,4-dibromo-3-butanedione 1,4-dibromobutane-2,3-dione 1,4-DIBROMO-2,3-BUTANEDIONE alpha,alpha'-dibromobiacetyl alpha,alpha-Dibromobiacetyl~1,4-Dibromodiacetyl |
| CAS | 6305-43-7 |
| EINECS | 228-615-1 |
1,4-DIBROMO-2,3-BUTANEDIONE - Physico-chemical Properties
| Molecular Formula | C4H4Br2O2 |
| Molar Mass | 243.88 |
| Density | 2.0524 (rough estimate) |
| Melting Point | 117-119 °C (lit.) |
| Boling Point | 213.0±25.0 °C(Predicted) |
| Water Solubility | Insoluble in water. |
| Storage Condition | Room Temprature |
| Refractive Index | 1.5220 (estimate) |
| MDL | MFCD00000205 |
| Physical and Chemical Properties | EPA Chemical Information 2,3-Butanedione, 1,4-dibromo- (6305-43-7) |
| Use | Application 1, 4-dibromo-2, 3-butanedione is an organic synthesis intermediate and pharmaceutical intermediate, which can be used in laboratory research and development process and chemical production process. |
1,4-DIBROMO-2,3-BUTANEDIONE - 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. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S37/39 - Wear suitable gloves and eye/face protection S27 - Take off immediately all contaminated clothing. |
| UN IDs | 1759 |
| WGK Germany | 3 |
| RTECS | EK2850000 |
| TSCA | Yes |
| Hazard Class | 8 |
| Packing Group | III |
1,4-DIBROMO-2,3-BUTANEDIONE - Upstream Downstream Industry
| Downstream Products | 2,2'-Diamino-4,4'-bithiazole |
1,4-DIBROMO-2,3-BUTANEDIONE - Preparation
report 1.
Add 2, 3-butanedione (10g;116mmol) and 20 mLCHCl3 to a 250mL round bottom flask equipped with a reflux condenser and a drip funnel. Bromine (37g,12mL,232mmol,d:3.1028)g/mL) was dissolved with 25 mLCHCl3 and slowly added dropwise to the reaction mixture. The reaction was carried out at 50°C until no HBr was precipitated. Cool the crude mixture in the refrigerator overnight. Filter out the precipitated product. Recrystallization of the crude product from CHCl3 gave 1, 4-dibromo-2, 3-butanedione.
report 2.
The CHCl3(10mL) solution of 2,3-succinedone (5.000g,58.0mmol) was slowly dropped into the CHCl3(6mL) solution of bromine (18.560g,116.0mmol) at room temperature. After the addition, the reaction was carried out at 48°C for 3 hours. The mixture was cooled in an ice bath for 2 h, and the precipitate was filtered and purified by recrystallization from CHCl3 to obtain a yellow solid of 1, 4-dibromo-2, 3-butanedione. Output: 9.112g(65%). Melting point: 116-117 ℃.
Last Update：2024-04-10 22:29:15
1,4-DIBROMO-2,3-BUTANEDIONE - Nature
| BRN | 970154 |
Last Update：2024-04-09 19:04:56
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View History
1,4-DIBROMO-2,3-BUTANEDIONE
苯甲酰基二茂铁
Dimethylethylphosphine sulfide
M-ISOPROPYL ANILINE
CS-2460
COBALT(II) FORMATE DIHYDRATE
二苄基二硫代氨基甲酸锌
10102-05-3
3-aminopropylsilanetriol
RARECHEM BK PT 0198
苯甲酰基二茂铁
Dimethylethylphosphine sulfide
M-ISOPROPYL ANILINE
CS-2460
COBALT(II) FORMATE DIHYDRATE
二苄基二硫代氨基甲酸锌
10102-05-3
3-aminopropylsilanetriol
RARECHEM BK PT 0198
Downstream Products for 1,4-DIBROMO-2,3-BUTANEDIONE