methane Thermodynamic Properties vs Temperature (CAS 74-82-8)

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

Related Calculators for methane

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 methane

Calculated properties vs. Temperature

Profile Data

Equilibrium Thermodynamic and Transport Properties of methane 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	2.13605	0.782012	0.00947116	0.0278028	0.727656	20.5143	-105.194	-0.384582	g
-18.048	2.14346	0.766372	0.00964575	0.0284439	0.726879	20.933	-94.2321	-0.341176	g
-12.9459	2.15137	0.751345	0.00981924	0.0290914	0.726155	21.3517	-83.2332	-0.298486	g
-7.84388	2.1598	0.736896	0.00999167	0.0297456	0.725485	21.7703	-72.1944	-0.256474	g
-2.74184	2.16873	0.722992	0.010163	0.0304069	0.724865	22.189	-61.113	-0.215102	g
2.3602	2.17816	0.709603	0.0103334	0.0310756	0.724292	22.6076	-49.9864	-0.174338	g
7.46224	2.18809	0.696702	0.0105027	0.0317518	0.723762	23.0263	-38.8119	-0.13415	g
12.5643	2.19851	0.68426	0.0106709	0.032436	0.72327	23.445	-27.5869	-0.0945079	g
17.6663	2.2094	0.672256	0.010838	0.0331282	0.72281	23.8636	-16.3089	-0.0553834	g
22.7684	2.22076	0.660665	0.011004	0.0338287	0.72238	24.2823	-4.97535	-0.0167502	g
27.8704	2.23258	0.649468	0.0111688	0.0345376	0.721975	24.7009	6.4161	0.0214167	g
32.9724	2.24483	0.638643	0.0113326	0.035255	0.721595	25.1196	17.8678	0.0591407	g
38.0745	2.25752	0.628174	0.0114953	0.0359811	0.721237	25.5383	29.3821	0.0964437	g
43.1765	2.27062	0.618042	0.011657	0.0367159	0.720901	25.9569	40.9612	0.133347	g
48.2786	2.28412	0.608232	0.0118176	0.0374595	0.720588	26.3756	52.6071	0.169869	g
53.3806	2.29801	0.598728	0.0119773	0.038212	0.720297	26.7942	64.3221	0.206029	g
58.4827	2.31226	0.589517	0.0121361	0.0389733	0.720027	27.2129	76.1079	0.241843	g
63.5847	2.32687	0.580585	0.0122939	0.0397434	0.719777	27.6316	87.9665	0.277329	g
68.6867	2.34182	0.571919	0.0124509	0.0405224	0.719544	28.0502	99.8997	0.312501	g
73.7888	2.35709	0.563509	0.0126069	0.0413101	0.719327	28.4689	111.909	0.347374	g
78.8908	2.37266	0.555342	0.012762	0.0421066	0.719124	28.8875	123.997	0.38196	g
83.9929	2.38853	0.547408	0.0129162	0.0429118	0.71893	29.3062	136.164	0.416273	g
89.0949	2.40467	0.539698	0.0130694	0.0437256	0.718746	29.7249	148.412	0.450325	g
94.1969	2.42107	0.532203	0.0132217	0.0445478	0.718568	30.1435	160.742	0.484126	g
99.299	2.43772	0.524912	0.013373	0.0453785	0.718395	30.5622	173.156	0.517687	g
104.401	2.4546	0.517819	0.0135235	0.0462175	0.718229	30.9808	185.656	0.551019	g
109.503	2.4717	0.510914	0.0136731	0.0470647	0.718068	31.3995	198.241	0.584129	g
114.605	2.489	0.504192	0.0138218	0.04792	0.717914	31.8182	210.913	0.617027	g
119.707	2.50649	0.497644	0.0139697	0.0487832	0.717767	32.2368	223.674	0.649721	g
124.809	2.52415	0.491264	0.0141169	0.0496542	0.717626	32.6555	236.524	0.682219	g
129.911	2.54199	0.485045	0.0142632	0.0505328	0.717493	33.0741	249.464	0.714528	g
135.013	2.55997	0.478982	0.0144088	0.0514191	0.717366	33.4928	262.495	0.746655	g
140.115	2.5781	0.473069	0.0145537	0.0523127	0.717243	33.9115	275.617	0.778606	g
145.217	2.59636	0.4673	0.0146978	0.0532136	0.717125	34.3301	288.832	0.810387	g
150.319	2.61474	0.46167	0.0148411	0.0541216	0.717009	34.7488	302.14	0.842004	g
155.421	2.63323	0.456174	0.0149836	0.0550366	0.716894	35.1674	315.542	0.873462	g
160.523	2.65182	0.450807	0.0151254	0.0559584	0.716779	35.5861	329.038	0.904767	g
165.626	2.6705	0.445565	0.0152663	0.0568869	0.716664	36.0048	342.629	0.935922	g
170.728	2.68927	0.440444	0.0154065	0.0578219	0.716549	36.4234	356.315	0.966933	g
175.83	2.7081	0.435438	0.015546	0.0587634	0.716434	36.8421	370.096	0.997804	g
180.932	2.72701	0.430546	0.0156847	0.0597111	0.716322	37.2607	383.974	1.02854	g
186.034	2.74597	0.425762	0.0158228	0.060665	0.716212	37.6794	397.948	1.05914	g
191.136	2.76498	0.421083	0.0159603	0.0616248	0.716106	38.0981	412.018	1.08961	g
196.238	2.78404	0.416506	0.0160971	0.0625905	0.716003	38.5167	426.185	1.11996	g
201.34	2.80314	0.412028	0.0162333	0.0635619	0.715903	38.9354	440.449	1.15019	g
206.442	2.82227	0.407645	0.0163688	0.0645389	0.715804	39.354	454.811	1.18029	g
211.544	2.84142	0.403354	0.0165038	0.0655214	0.715707	39.7727	469.27	1.21028	g
216.646	2.86059	0.399152	0.016638	0.0665092	0.715609	40.1914	483.826	1.24015	g
221.748	2.87978	0.395037	0.0167715	0.0675022	0.715509	40.61	498.48	1.26992	g
226.85	2.89898	0.391006	0.0169044	0.0685003	0.715408	41.0287	513.232	1.29957	g

Property Profiles for methane

Heat Capacity (Cp) vs Temperature

Density vs Temperature

Thermal Conductivity vs Temperature

Viscosity vs Temperature

Thermodynamic Property Profile at Constant Pressure

This page presents the temperature-dependent thermodynamic and transport properties of methane (CAS 74-82-8) 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 methane 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 methane 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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