potassium Thermodynamic Properties vs Temperature (CAS 7440-09-7)

Analyze how thermophysical properties change over a temperature range at a constant pressure of 1 atm.

Related Calculators for potassium

Pure Component Properties

Get properties at a single T and P.

Properties vs. Pressure

Analyze properties at constant temperature.

Input Conditions

Define the chemical and range for the property profile.

Property Profile for potassium

Calculated properties vs. Temperature

Profile Data

Equilibrium Thermodynamic and Transport Properties of potassium at 1.01325 bar over -23.15–226.85 °C
Temperature (°C)	Specific heat capacity (kJ/kg·K)	Density (kg/m³)	Dynamic viscosity (cP)	Thermal conductivity (W/m·K)	Prandtl number ()	Molar volume (m³/kmol)	Specific enthalpy (kJ)	Specific entropy (kJ/kg·K)	Phase
-23.15	0.821728	890.007	N/A	104	N/A	0.0439303	-37.9852	-0.139122	s
-18.048	0.814769	890.007	N/A	103.945	N/A	0.0439303	-33.8105	-0.122591	s
-12.9459	0.807811	890.007	N/A	103.878	N/A	0.0439303	-29.6712	-0.106525	s
-7.84388	0.800853	890.007	N/A	103.791	N/A	0.0439303	-25.5675	-0.0909063	s
-2.74184	0.793894	890.007	N/A	103.677	N/A	0.0439303	-21.4993	-0.0757175	s
2.3602	0.786936	890.007	N/A	103.528	N/A	0.0439303	-17.4665	-0.0609428	s
7.46224	0.779978	890.007	N/A	103.343	N/A	0.0439303	-13.4693	-0.0465668	s
12.5643	0.773019	890.007	N/A	103.127	N/A	0.0439303	-9.50759	-0.0325753	s
17.6663	0.766061	890.007	N/A	102.885	N/A	0.0439303	-5.58137	-0.0189546	s
22.7684	0.759103	890.007	N/A	102.623	N/A	0.0439303	-1.69064	-0.00569178	s
27.8704	0.753591	890.007	N/A	102.34	N/A	0.0439303	2.16604	0.00723022	s
32.9724	0.755283	890.007	N/A	101.989	N/A	0.0439303	6.01203	0.0198996	s
38.0745	0.764044	890.007	N/A	101.563	N/A	0.0439303	9.88503	0.0324469	s
43.1765	0.779069	890.007	N/A	101.067	N/A	0.0439303	13.819	0.0449846	s
48.2786	0.799589	890.007	N/A	100.508	N/A	0.0439303	17.8441	0.0576068	s
53.3806	0.824872	890.007	N/A	99.8911	N/A	0.0439303	21.9862	0.0703918	s
58.4827	0.854212	890.007	N/A	99.2229	N/A	0.0439303	26.268	0.0834028	s
63.5847	0.823852	828.001	0.513787	53.7219	0.00787917	0.0472201	90.4244	0.274073	l
68.6867	0.822378	826.818	0.502222	53.4973	0.00772032	0.0472877	94.6239	0.286451	l
73.7888	0.820913	825.634	0.491246	53.2733	0.00756984	0.0473555	98.816	0.298623	l
78.8908	0.819458	824.45	0.480818	53.0499	0.00742715	0.0474235	103.001	0.310597	l
83.9929	0.818013	823.267	0.4709	52.8272	0.00729175	0.0474917	107.178	0.322378	l
89.0949	0.816581	822.083	0.461457	52.605	0.00716313	0.04756	111.348	0.333971	l
94.1969	0.81516	820.899	0.452458	52.3835	0.00704087	0.0476286	115.51	0.345382	l
99.299	0.813752	819.716	0.443874	52.1627	0.00692456	0.0476974	119.666	0.356616	l
104.401	0.812358	818.532	0.435678	51.9425	0.00681383	0.0477664	123.814	0.367678	l
109.503	0.810979	817.349	0.427846	51.7229	0.00670833	0.0478355	127.955	0.378573	l
114.605	0.809613	816.165	0.420356	51.5041	0.00660775	0.0479049	132.089	0.389306	l
119.707	0.808263	814.981	0.413186	51.2859	0.0065118	0.0479745	136.216	0.39988	l
124.809	0.806929	813.798	0.406318	51.0684	0.00642021	0.0480443	140.337	0.410301	l
129.911	0.805611	812.614	0.399719	50.8516	0.0063325	0.0481142	144.45	0.420572	l
135.013	0.804309	811.43	0.393316	50.6355	0.00624754	0.0481844	148.557	0.430697	l
140.115	0.803024	810.247	0.387095	50.4201	0.00616512	0.0482548	152.658	0.440681	l
145.217	0.801756	809.063	0.381048	50.2055	0.00608515	0.0483254	156.752	0.450526	l
150.319	0.800505	807.879	0.375171	49.9916	0.00600754	0.0483962	160.839	0.460237	l
155.421	0.799272	806.696	0.369456	49.7784	0.00593221	0.0484672	164.92	0.469817	l
160.523	0.798058	805.512	0.363896	49.5659	0.00585907	0.0485384	168.995	0.479268	l
165.626	0.796861	804.329	0.358488	49.3542	0.00578806	0.0486099	173.063	0.488596	l
170.728	0.795683	803.145	0.353225	49.1432	0.00571909	0.0486815	177.126	0.497801	l
175.83	0.794523	801.961	0.348101	48.933	0.0056521	0.0487533	181.183	0.506888	l
180.932	0.793382	800.778	0.343113	48.7236	0.00558702	0.0488254	185.233	0.515859	l
186.034	0.79226	799.594	0.338254	48.5149	0.00552378	0.0488977	189.278	0.524718	l
191.136	0.791157	798.41	0.333522	48.307	0.00546232	0.0489702	193.318	0.533466	l
196.238	0.790074	797.227	0.32891	48.0998	0.00540258	0.0490429	197.352	0.542107	l
201.34	0.789009	796.043	0.324416	47.8934	0.00534451	0.0491158	201.38	0.550642	l
206.442	0.787964	794.86	0.320034	47.6878	0.00528805	0.0491889	205.403	0.559075	l
211.544	0.786939	793.676	0.315762	47.483	0.00523314	0.0492623	209.42	0.567408	l
216.646	0.785933	792.492	0.311596	47.279	0.00517975	0.0493359	213.433	0.575643	l
221.748	0.784947	791.309	0.307531	47.0758	0.00512781	0.0494097	217.44	0.583783	l
226.85	0.78398	790.125	0.303566	46.8733	0.00507729	0.0494837	221.442	0.591829	l

Property Profiles for potassium

Heat Capacity (Cp) vs Temperature

Density vs Temperature

Thermal Conductivity vs Temperature

Thermodynamic Property Profile at Constant Pressure

This page presents the temperature-dependent thermodynamic and transport properties of potassium (CAS 7440-09-7) calculated at a constant pressure of 1 atm (101325 Pa) over the temperature range 250-500 K.

The properties shown - specific heat capacity (Cp), density (ρ), dynamic viscosity (μ), thermal conductivity (k), Prandtl number (Pr), molar volume (Vm), specific enthalpy (H), and specific entropy (S) - are among the most commonly used parameters in chemical engineering calculations, process simulation, and thermal system design.

All values are generated programmatically using validated thermodynamic correlations and equations of state and represent equilibrium properties at the specified pressure.

Understanding the Property Trends

Specific heat capacity (Cp) indicates the amount of energy required to raise the temperature of potassium and is critical for energy balance and heat-exchanger design.
Density (ρ) and molar volume (Vm) describe volumetric behavior and are required for flow calculations, equipment sizing, and storage design.
Dynamic viscosity (μ) governs fluid flow resistance, influencing Reynolds number and pressure drop.
Thermal conductivity (k) and Prandtl number (Pr) are essential inputs for convective heat-transfer correlations.
Specific enthalpy (H) and specific entropy (S) are fundamental thermodynamic properties used in process modeling, compression, and expansion analysis.

Property trends with temperature may vary depending on molecular structure, intermolecular interactions, and phase stability.

Engineering Applications

The temperature-dependent properties of potassium at atmospheric pressure are commonly required in:

Heat exchanger and reactor design
Process simulation and thermodynamic modeling
Fluid flow and pressure-drop calculations
Energy balance and equipment sizing
Chemical engineering education and research

These profiles are particularly useful when evaluating system performance over a wide operating temperature range under near-ambient pressure conditions.

Frequently Asked Questions

At what pressure are these properties calculated?
All properties on this page are calculated at a constant pressure of 1 atm (101325 Pa).

Can these values be used in process simulation software?
Yes. The data is suitable for preliminary design, validation, and educational use. For licensed simulators, vendor-specific property packages should be referenced.

Can I change the pressure or temperature range?
Yes. Use the interactive controls above to generate custom property profiles at different pressures or temperature ranges.

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