manganese(3+) tris(4-oxopent-2-en-2-olate)
manganese tris(4-oxopent-2-en-2-oate)
CAS: 14284-89-0
Molecular Formula: C15H21MnO6
manganese(3+) tris(4-oxopent-2-en-2-olate) - Names and Identifiers
manganese(3+) tris(4-oxopent-2-en-2-olate) - Physico-chemical Properties
| Molecular Formula | C15H21MnO6 |
| Molar Mass | 352.26 |
| Melting Point | 159-161°C (dec.)(lit.) |
| Boling Point | 187.6℃ at 760 mmHg |
| Solubility | Soluble in benzene, ethyl acetate |
| Appearance | Black powder |
| Color | Black |
| Exposure Limit | OSHA: Ceiling 5 mg/m3NIOSH: IDLH 500 mg/m3; TWA 1 mg/m3; STEL 3 mg/m3 |
| Storage Condition | Room Temprature |
| Stability | hygroscopic |
| Sensitive | 7: reacts slowly with moisture/water |
| MDL | MFCD00000023 |
| Physical and Chemical Properties | Black to green brown crystals |
manganese(3+) tris(4-oxopent-2-en-2-olate) - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. |
| Safety Description | S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| WGK Germany | 3 |
| TSCA | Yes |
| HS Code | 29141900 |
manganese(3+) tris(4-oxopent-2-en-2-olate) - 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 | Used as an organic synthesis catalyst; used as a resin crosslinking agent and curing accelerator |
| production method | 1. dissolve 5.0g(31.7mmol) potassium permanganate powder in as little water as possible and warm it in a steam bath to completely dissolve it. Filtering. 22.0g(0.22mol) of newly distilled acetylacetone was added to the filtrate under intense stirring. The mixture was heated and stirred in a steam bath for 5min. Then cool for about 10min and filter to obtain brown-black crystals of Mn(acac)3. The precipitate was washed several times with a small amount of 1 ∶ 1 acetylacetone water mixed solvent. Finally, it is dried under reduced pressure. After drying, benzene with a small amount of solid was recrystallized, hot light petroleum ether (boiling point 40~60 ℃) was added to benzene solution, and cooled to 0 ℃ to obtain 9.7g of product with 87% yield. 2. Dissolve 5 2g(0.026mol)MnCl2 · 4H2O and 13.6g(0.10mol)NaCH3CO2 · 3H2O in 200mL of water. 20g(0.2mol) of acetylacetone was added to the solution. Another 1.04g(0.0066mol) of potassium permanganate was taken and dissolved in 50mL of water. At room temperature, add the potassium permanganate solution to the previous manganese chloride solution while stirring. A few minutes later, 13.6g(0.10mol) of sodium acetate dissolved in 500mL of water was added. After heating for about 10min, it was reduced to room temperature. Filtered to generate black precipitate, washed with water. Vacuum drying on anhydrous calcium sulfate to obtain 6.5g product with 70% yield. The crude product was dissolved with 20mL of warm benzene. Filtration, cooling to room temperature and adding 75mL of petroleum ether to precipitate again. |
Last Update：2024-04-10 22:29:15
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