These tables include heat of formation data gathered from a variety of sources, including the primary and secondary literature, as well as the NIST Chemistry WebBook. Note that the table for Alkanes contains ΔHf o values in kCal, and the table for Miscellaneous Compounds and Elements contains these values in kJ/mol.
| Species | Phase(Matter) | Chemical Formula | ΔHf o (kJ/mol) |
|---|---|---|---|
| Aluminum | |||
| Aluminum | Solid | Al | 0 |
| Aluminum Chloride | Solid | AlCl3 | -705.63 |
| Aluminum Oxide | Solid | Al2O3 | -1675.7 |
| Barium | |||
| Barium Chloride | Solid | BaCl2 | -858.6 |
| Barium Carbonate | Solid | BaCO3 | -1213 |
| Barium Oxide | Solid | BaO | -548.1 |
| Barium Sulfate | Solid | BaSO4 | -1473.2 |
| Beryllium | |||
| Beryllium | Solid | Be | 0 |
| Beryllium Hydroxide | Solid | Be(OH)2 | -902.5 |
| Boron | |||
| Boron Trichloride | Solid | BCl3 | -402.96 |
| Bromine | |||
| Bromine | Liquid | Br2 | 0 |
| Bromine | Gas | Br | 111.884 |
| Bromine | Gas | Br2 | 30.91 |
| Bromine Trifluoride | Gas | BF3 | -255.60 |
| Hydrobromic Acid | Gas | HBr | -36.29 |
| Calcium | |||
| Calcium | Solid | Ca | 0 |
| Calcium | Gas | Ca | 178.2 |
| Calcium(II) Ion | Gas | Ca 2+ | 1925.90 |
| Calcium Carbide | Solid | CaC2 | -59.8 |
| Calcium Carbonate(Calcite) | Solid | CaCO3 | -1207.6 |
| Calcium Chloride | Solid | CaCl2 | -795.8 |
| Calcium Fluoride | Solid | CaF2 | -1219.6 |
| Calcium Hydride | Solid | CaH2 | -186.2 |
| Calcium Hydroxide | Solid | Ca(OH)2 | -986.09 |
| Calcium Hydroxide | Aqueous | Ca(OH)2 | -1002.82 |
| Calcium Oxide | Solid | CaO | -635.09 |
| Calcium Sulfate | Solid | CaSO4 | -1434.52 |
| Calcium Sulfide | Solid | CaS | -482.4 |
| Carbon | Alkanes Above | ||
| Benzene | Liquid | C6H6 | 48.95 |
| Benzoic Acid | Solid | C7H6O2 | -385.2 |
| Carbon(Graphite) | Solid | C | 0 |
| Carbon(Diamond) | Solid | C | 1.8 |
| Carbon | Gas | C | -716.67 |
| Carbon Dioxide | Gas | CO2 | -393.509 |
| Carbon disulfide | Liquid | CS2 | 89.41 |
| Carbon disulfide | Gas | CS2 | 116.7 |
| Carbon Monoxide | Gas | CO | -110.525 |
| Carbon Tetrachloride | Liquid | CCl4 | -139.5 |
| Carbon Tetrachloride | Gas | CCl4 | -103.18 |
| Carbonyl Chloride(Phosgene) | Gas | COCl2 | -218.8 |
| Ethane | Gas | C2H6 | -83.85 |
| Ethanol | Liquid | C2H5OH | -277.0 |
| Ethanol | Gas | C2H5OH | -235.3 |
| Ethene | Gas | C2H4 | 52.47 |
| Ethyne | Gas | C2H2 | 226.73 |
| Methane | Gas | CH4 | -74.87 |
| Methanol(Methyl Alcohol) | Liquid | CH3OH | -238.4 |
| Methanol(Methyl Alcohol) | Gas | CH3OH | -201.0 |
| Methyl Trichloride(Chloroform) | Liquid | CHCl3 | -134.47 |
| Methyl Trichloride(Chloroform) | Gas | CHCl3 | -103.18 |
| Propane | Liquid | C3H8 | -104.7 |
| Cesium | |||
| Cesium | Solid | Cs | 0 |
| Cesium(I) Ion | Gas | Cs + | 457.964 |
| Cesium Chloride | Solid | CsCl | -443.04 |
| Chlorine | |||
| Chlorine | Gas | Cl2 | 0 |
| Chromium | |||
| Copper | |||
| Fluorine | |||
| Fluorine | Gas | F2 | |
| Hydrogen | |||
| Hydrogen | Gas | H2 | 0 |
| Water | Liquid | H2O | -285.83 |
| Water | Gas | H2O | -241.83 |
| Hydrogen Peroxide | Liquid | H2O2 | -187.78 |
| Hydrogen Cyanide | Gas | HCN | +130.5 |
| Hydrofluoric Acid | Gas | HF | -269 |
| Hydrochloric acid | Gas | HCl | -92.30 |
| Iodine | |||
| Iodine | Solid | I2 | 0 |
| Iodine | Gas | I2 | 62.438 |
| Iron | |||
| Lead | |||
| Lithium | |||
| Magnesium | |||
| Magnesium Carbonate | Solid | MgCO3 | -1111.69 |
| Magnesium Chloride | Solid | MgCl2 | -641.8 |
| Magnesium Hydroxide | Solid | Mg(OH)2 | -924.54 |
| Magnesium Oxide | Solid | MgO | -601.24 |
| Magnesium sulfate | Solid | MgSO4 | -1278.2 |
| Manganese | |||
| Manganese(II) Oxide | Solid | MnO | -384.9 |
| Manganese(IV) Oxide | Solid | MnO2 | -519.7 |
| Mercury | |||
| Mercury(II) Oxide (red) | Solid | HgO | -90.83 |
| Mercury Sulfide (red, cinnabar) | Solid | HgS | -58.2 |
| Nickel | |||
| Nitrogen | |||
| Ammonia | Aqueous | NH3 | -80.8 |
| Ammonia | Gas | NH3 | -45.90 |
| Nitrogen Dioxide | Gas | NO2 | 33.1 |
| Nitrogen Monoxide | Gas | NO | 90.29 |
| Oxygen | |||
| Phosphorus | |||
| Phosphorus trichloride | Liquid | PCl3 | -320 |
| Phosphorus pentachloride | Solid | PCl5 | -440 |
| Potassium | |||
| Potassium Bromide | Solid | KBr | -392.2 |
| Potassium Chlorate | Solid | KClO3 | -397.73 |
| Potassium Chloride | Solid | KCl | -436.68 |
| Potassium Fluoride | Solid | KF | -562.6 |
| Silicon | |||
| Silica (Quartz) | Solid | SiO2 | -910.86 |
| Silver | |||
| Silver Bromide | Solid | AgBr | -99.5 |
| Silver Chloride | Solid | AgCl | -127.01 |
| Silver Iodide | Solid | AgI | -62.4 |
| Silver Oxide | Solid | Ag2O | -31.1 |
| Silver Sulfide | Solid | Ag2S | -31.8 |
| Sodium | |||
| Sodium Carbonate | Solid | Na2CO3 | -1130.77 |
| Sodium Chloride | Aqueous | NaCl | -407.27 |
| Sodium Chloride | Solid | NaCl | -411.12 |
| Sodium Chloride | Liquid | NaCl | -385.92 |
| Sodium Chloride | Gas | NaCl | -181.42 |
| Sodium Fluoride | Solid | NaF | -569.0 |
| Sodium Hydroxide | Aqueous | NaOH | -469.15 |
| Sodium Hydroxide | Solid | NaOH | -425.93 |
| Sodium Nitrate | Aqueous | NaNO3 | -446.2 |
| Sodium Nitrate | Solid | NaNO3 | -424.8 |
| Sulfur | |||
| Hydrogen Sulfide | Gas | H2S | -20.63 |
| Sulfur Dioxide | Gas | SO2 | -296.84 |
| Sulfuric acid | Liquid | H2SO4 | -814 |
| Tin | |||
| Titanium | |||
| Zinc | |||