![]() Crystal structure of potassium phosphide (K3P) | |
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ECHA InfoCard | 100.040.004 |
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Properties | |
K3P | |
Molar mass | 148.269 g mol−1 |
Appearance | Green crystalline solid or powder |
Thermochemistry [1] | |
Std molar entropy (S⦵298) | 49.8 J mol−1 K−1 |
Std enthalpy of formation (ΔfH⦵298) | −1.77 kJ mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Potassium phosphide is an inorganic semiconductor compound with the formula K3P. It appears as a green crystalline solid or powder. [2] It reacts violently with water (even on contact with air) and is toxic via ingestion, inhalation and skin absorption. [3] It has a hexagonal structure. [1]
Potassium phosphide can be synthesised by a reaction under controlled conditions starting from the two elements. Simply fusing potassium and phorsphorus does not yield pure K3P: [4]
Potassium phosphide is used in high power, high frequency applications and also in laser diodes. [2]