Back أزيد البوتاسيوم Arabic Azid draselný Czech Kaliumazid German Kalia azido Esperanto Կալիումի ազիդ Armenian アジ化カリウム Japanese Азид калия Russian Kalijum azid Serbo-Croatian Kalijum azid Serbian பொட்டாசியம் அசைடு Tamil
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| Names | |||
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| IUPAC name
Potassium azide
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| Identifiers | |||
3D model (JSmol)
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| ECHA InfoCard | 100.039.997 | ||
PubChem CID
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| UNII | |||
CompTox Dashboard (EPA)
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| Properties | |||
| KN3 | |||
| Molar mass | 81.1184 g/mol | ||
| Appearance | Colorless crystals[1] | ||
| Density | 2.038 g/cm3 [1] | ||
| Melting point | 350 °C (662 °F; 623 K) (in vacuum)[1] | ||
| Boiling point | decomposes | ||
| 41.4 g/100 mL (0 °C) 50.8 g/100 mL (20 °C) 105.7 g/100 mL (100 °C) | |||
| Solubility | 0.1375 g/100 g in ethanol (16°C)[2] insoluble in ether | ||
| Thermochemistry | |||
Std enthalpy of
formation (ΔfH⦵298) |
-1.7 kJ/mol | ||
| Hazards | |||
| Occupational safety and health (OHS/OSH): | |||
Main hazards
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Very Toxic, explosive if strongly heated | ||
| NFPA 704 (fire diamond) | |||
| Lethal dose or concentration (LD, LC): | |||
LD50 (median dose)
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27 mg/kg (oral, rat)[3] | ||
| Related compounds | |||
Other cations
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Sodium azide, copper(II) azide, lead(II) azide, silver azide | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Potassium azide is the inorganic compound having the formula KN3. It is a white, water-soluble salt. It is used as a reagent in the laboratory.
It has been found to act as a nitrification inhibitor in soil.[4]
- ^ a b c Dale L. Perry; Sidney L. Phillips (1995). Handbook of inorganic compounds. CRC Press. p. 301. ISBN 0-8493-8671-3.
- ^ Jiri Hála (2004). "IUPAC-NIST Solubility Data Series. 79. Alkali and Alkaline Earth Metal Pseudohalides". J. Phys. Chem. Ref. Data. 33: 16. doi:10.1063/1.1563591.
- ^ "Substance Name: Potassium azide". chem.sis.nlm.nih.gov. Archived from the original on 2014-08-12. Retrieved 2014-08-11.
- ^ T. D. Hughes; L. F. Welch (1970). "Potassium Azide as a Nitrification Inhibitor". Agronomy Journal. 62 (5). American Society of Agronomy: 595–599. doi:10.2134/agronj1970.00021962006200050013x.