Back Kaliumpermanganaat Afrikaans بيرمنغنات البوتاسيوم Arabic Kalium permanqanat Azerbaijani پوتاسیوم پرمنقنات AZB Калиев перманганат Bulgarian পটাশিয়াম পারম্যাঙ্গানেট Bengali/Bangla Kalij-permanganat BS Permanganat de potassi Catalan Manganistan draselný Czech Kaliumpermanganat Danish
| Potassium permanganate | |
|---|---|
 
| |
| General | |
| Other names | Potassium manganate(VII) |
| Molecular formula | KMnO4 |
| Molar mass | 158.04 g/mol |
| Appearance | black crystals;
bright purple in solution |
| CAS number | [7722-64-7] |
| Properties | |
| Density and phase | 2.703 g/cm³, solid |
| Solubility in water | 6.38 g/100 ml (20 °C) |
| Melting point | 270 °C decomp. |
| Thermodynamic data | |
| Standard enthalpy of formation ΔfH°solid |
−813.4 kJ/mol |
| Standard molar entropy S°solid |
171.7 J.K−1.mol−1 |
| Hazards | |
| EU classification | Oxidant (O) Harmful (Xn) Dangerous for the environment (N) |
| NFPA 704 |
0
1
0
OX
|
| Related compounds | |
| Other anions | Potassium hypomanganate |
| Other cations | Sodium permanganate |
| Related compounds | Potassium manganate Manganese heptoxide |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) See Wikipedia:Disclaimer. | |
Potassium permanganate is an inorganic chemical compound. Its chemical formula is KMnO4. It contains potassium and permanganate ions. The manganese is in the +7 oxidation state. It is also known as permanganate of potash and Condy's crystals. Potassium permanganate is a strong oxidizing agent, which means it has a tendency to take electrons from other chemicals. It dissolves in water to give purple solutions. If it is evaporated, it makes purple-black shiny crystals.[1] It has a sweet taste and is odorless.[1]
- ↑ "Archived copy". Archived from the original on 2006-10-17. Retrieved 2006-10-29.
{{cite web}}: CS1 maint: archived copy as title (link)