Editing Standard enthalpy of formation (section)

== Examples: standard enthalpies of formation at 25&nbsp;°C ==
Thermochemical properties of selected substances at 298.15&nbsp;K and 1&nbsp;atm

===Inorganic substances===
{{sticky header}}
{| class="wikitable sortable sticky-header"
|-
! Species
! Phase
! Chemical formula
! data-sort-type=number| Δ<sub>f</sub>''H''<sup>⦵</sup> /(kJ/mol)
|-
| [[Aluminium]]
| Solid
| Al
| 0
|-
| [[Aluminium chloride]]
| Solid
| AlCl<sub>3</sub>
| −705.63
|-
| [[Aluminium oxide]]
| Solid
| Al<sub>2</sub>O<sub>3</sub>
| −1675.5
|-
| [[Aluminium hydroxide]]
| Solid
| Al(OH)<sub>3</sub>
| −1277
|-
| [[Aluminium sulphate]]
| Solid
| Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>
| −3440
|-
| [[Barium chloride]]
| Solid
| BaCl<sub>2</sub>
| −858.6
|-
| [[Barium carbonate]]
| Solid
| BaCO<sub>3</sub>
| −1216
|-
| [[Barium hydroxide]]
| Solid
| Ba(OH)<sub>2</sub>
| −944.7
|-
| [[Barium oxide]]
| Solid
| BaO
| −548.1
|-
| [[Barium sulfate]]
| Solid
| BaSO<sub>4</sub>
| −1473.3
|-
| [[Beryllium]]
| Solid
| Be
| 0
|-
| [[Beryllium hydroxide]]
| Solid
| Be(OH)<sub>2</sub>
| −903
|-
| [[Beryllium oxide]]
| Solid
| BeO
| −609.4
|-
| [[Boron trichloride]]
| Solid
| BCl<sub>3</sub>
| −402.96
|-
| [[Bromine]]
| Liquid
| Br<sub>2</sub>
| 0
|-
| [[Bromide ion]]
| Aqueous
| Br<sup>−</sup>
| −121
|-
| [[Bromine]]
| Gas
| Br
| 111.884
|-
| [[Bromine]]
| Gas
| Br<sub>2</sub>
| 30.91
|-
| [[Bromine trifluoride]]
| Gas
| BrF<sub>3</sub>
| −255.60
|-
| [[Hydrogen bromide]]
| Gas
| HBr
| −36.29
|-
| [[Cadmium]]
| Solid
| Cd
| 0
|-
| [[Cadmium oxide]]
| Solid
| CdO
| −258
|-
| [[Cadmium hydroxide]]
| Solid
| Cd(OH)<sub>2</sub>
| −561
|-
| [[Cadmium sulfide]]
| Solid
| CdS
| −162
|-
| [[Cadmium sulfate]]
| Solid
| CdSO<sub>4</sub>
| −935
|-
| [[Caesium]]
| Solid
| Cs
| 0
|-
| [[Caesium]]
| Gas
| Cs
| 76.50
|-
| [[Caesium]]
| Liquid
| Cs
| 2.09
|-
| Caesium(I) ion
| Gas
| Cs<sup>+</sup>
| 457.964
|-
| [[Caesium chloride]]
| Solid
| CsCl
| −443.04
|-
| [[Calcium]]
| Solid
| Ca
| 0
|-
| [[Calcium]]
| Gas
| Ca
| 178.2
|-
| Calcium(II) ion
| Gas
| Ca<sup>2+</sup>
| 1925.90
|-
| Calcium(II) ion
| Aqueous
| Ca<sup>2+</sup>
| −542.7
|-
| [[Calcium carbide]]
| Solid
| CaC<sub>2</sub>
| −59.8
|-
| [[Calcium carbonate]] ([[Calcite]])
| Solid
| CaCO<sub>3</sub>
| −1206.9
|-
| [[Calcium chloride]]
| Solid
| CaCl<sub>2</sub>
| −795.8
|-
| [[Calcium chloride]]
| Aqueous
| CaCl<sub>2</sub>
| −877.3
|-
| [[Calcium phosphate]]
| Solid
| Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>
| −4132
|-
| [[Calcium fluoride]]
| Solid
| CaF<sub>2</sub>
| −1219.6
|-
| [[Calcium hydride]]
| Solid
| CaH<sub>2</sub>
| −186.2
|-
| [[Calcium hydroxide]]
| Solid
| Ca(OH)<sub>2</sub>
| −986.09
|-
| [[Calcium hydroxide]]
| Aqueous
| Ca(OH)<sub>2</sub>
| −1002.82
|-
| [[Calcium oxide]]
| Solid
| CaO
| −635.09
|-
| [[Calcium sulfate]]
| Solid
| CaSO<sub>4</sub>
| −1434.52
|-
| [[Calcium sulfide]]
| Solid
| CaS
| −482.4
|-
| [[Wollastonite]]
| Solid
| CaSiO<sub>3</sub>
| −1630
|-
| [[Carbon]] ([[Graphite]])
| Solid
| C
| 0
|-
| [[Carbon]] ([[Diamond]])
| Solid
| C
| 1.9
|-
| [[Carbon]]
| Gas
| C
| 716.67
|-
| [[Carbon dioxide]]
| Gas
| CO<sub>2</sub>
| −393.509
|-
| [[Carbon disulfide]]
| Liquid
| CS<sub>2</sub>
| 89.41
|-
| [[Carbon disulfide]]
| Gas
| CS<sub>2</sub>
| 116.7
|-
| [[Carbon monoxide]]
| Gas
| CO
| −110.525
|-
| [[Carbonyl chloride]] ([[Phosgene]])
| Gas
| COCl<sub>2</sub>
| −218.8
|-
| Carbon dioxide (un–ionized)
| Aqueous
| CO<sub>2</sub>(aq)
| −419.26
|-
| [[Bicarbonate]] ion
| Aqueous
|HCO<sub>3</sub><sup>–</sup>
| −689.93
|-
| [[Carbonate]] ion
| Aqueous
|CO<sub>3</sub><sup>2–</sup>
| −675.23
|-
| Monatomic chlorine
| Gas
| Cl
| 121.7
|-
| [[Chloride]] ion
| Aqueous
| Cl<sup>−</sup>
| −167.2
|-
| [[Chlorine]]
| Gas
| Cl<sub>2</sub>
| 0
|-
| [[Chromium]]
| Solid
| Cr
| 0
|-
| [[Copper]]
| Solid
| Cu
| 0
|-
| [[Copper(II) bromide]]
| Solid
| CuBr2
| −138.490
|-
| [[Copper(II) chloride]]
| Solid
| CuCl2
| −217.986
|-
| [[Copper(II) oxide]]
| Solid
| CuO
| −155.2
|-
| [[Copper(II) sulfate]] || Aqueous
|| CuSO<sub>4</sub> || −769.98
|-
| [[Fluorine]]
| Gas
| F<sub>2</sub>
| 0
|-
| Monatomic hydrogen
| Gas
| H
| 218
|-
| [[Hydrogen]]
| Gas
| H<sub>2</sub>
| 0
|-
| [[Water]]
| Gas
| H<sub>2</sub>O
| −241.818
|-
| [[Water]]
| Liquid
| H<sub>2</sub>O
| −285.8
|-
| [[Hydrogen ion]]
| Aqueous
| H<sup>+</sup>
| 0
|-
| [[Hydroxide ion]]
| Aqueous
| OH<sup>−</sup>
| −230
|-
| [[Hydrogen peroxide]]
| Liquid
| H<sub>2</sub>O<sub>2</sub>
| −187.8
|-
| [[Phosphoric acid]]
| Liquid
| H<sub>3</sub>PO<sub>4</sub>
| −1288
|-
| [[Hydrogen cyanide]]
| Gas
| HCN
| 130.5
|-
| [[Hydrogen bromide]]
| Liquid
| HBr
| −36.3
|-
| [[Hydrogen chloride]]
| Gas
| HCl
| −92.30
|-
| [[Hydrogen chloride]]
| Aqueous
| HCl
| −167.2
|-
| [[Hydrogen fluoride]]
| Gas
| HF
| −273.3
|-
| [[Hydrogen iodide]]
| Gas
| HI
| 26.5
|-
| [[Iodine]]
| Solid
| I<sub>2</sub>
| 0
|-
| [[Iodine]]
| Gas
| I<sub>2</sub>
| 62.438
|-
| [[Iodine]]
| Aqueous
| I<sub>2</sub>
| 23
|-
| [[Iodide]] ion
| Aqueous
| I<sup>−</sup>
| −55
|-
| [[Iron]]
| Solid
| Fe
| 0
|-
| Iron carbide ([[Cementite]])
| Solid
| Fe<sub>3</sub>C
| 5.4
|-
| Iron(II) carbonate ([[Siderite]])
| Solid
| FeCO<sub>3</sub>
| −750.6
|-
| [[Iron(III) chloride]]
| Solid
| FeCl<sub>3</sub>
| −399.4
|-
| [[Iron(II) oxide]] ([[Wüstite]])
| Solid
| FeO
| −272
|-
| [[Iron(II,III) oxide]] ([[Magnetite]])
| Solid
| Fe<sub>3</sub>O<sub>4</sub>
| −1118.4
|-
| [[Iron(III) oxide]] ([[Hematite]])
| Solid
| Fe<sub>2</sub>O<sub>3</sub>
| −824.2
|-
| [[Iron(II) sulfate]]
| Solid
| FeSO<sub>4</sub>
| −929
|-
| [[Iron(III) sulfate]]
| Solid
| Fe<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>
| −2583
|-
| [[Iron(II) sulfide]]
| Solid
| FeS
| −102
|-
| [[Pyrite]]
| Solid
| FeS<sub>2</sub>
| −178
|-
| [[Lead]]
| Solid
| Pb
| 0
|-
| [[Lead dioxide]]
| Solid
| PbO<sub>2</sub>
| −277
|-
| [[Lead sulfide]]
| Solid
| PbS
| −100
|-
| [[Lead sulfate]]
| Solid
| PbSO<sub>4</sub>
| −920
|-
| [[Lead(II) nitrate]]
| Solid
| Pb(NO<sub>3</sub>)<sub>2</sub>
| −452
|-
| [[Lead(II) sulfate]]
| Solid
| PbSO<sub>4</sub>
| −920
|-
| [[Lithium fluoride]]
| Solid
| LiF
| −616.93
|-
| [[Magnesium]]
| Solid
| Mg
| 0
|-
| Magnesium ion
| Aqueous
| Mg<sup>2+</sup>
| −466.85
|-
| [[Magnesium carbonate]]
| Solid
| MgCO<sub>3</sub>
| −1095.797
|-
| [[Magnesium chloride]]
| Solid
| MgCl<sub>2</sub>
| −641.8
|-
| [[Magnesium hydroxide]]
| Solid
| Mg(OH)<sub>2</sub>
| −924.54
|-
| [[Magnesium hydroxide]]
| Aqueous
| Mg(OH)<sub>2</sub>
| −926.8
|-
| [[Magnesium oxide]]
| Solid
| MgO
| −601.6
|-
| [[Magnesium sulfate]]
| Solid
| MgSO<sub>4</sub>
| −1278.2
|-
| [[Manganese]]
| Solid
| Mn
| 0
|-
| [[Manganese(II) oxide]]
| Solid
| MnO
| −384.9
|-
| [[Manganese(IV) oxide]]
| Solid
| MnO<sub>2</sub>
| −519.7
|-
| [[Manganese(III) oxide]]
| Solid
| Mn<sub>2</sub>O<sub>3</sub>
| −971
|-
| [[Manganese(II,III) oxide]]
| Solid
| Mn<sub>3</sub>O<sub>4</sub>
| −1387
|-
| [[Permanganate]]
| Aqueous
| {{chem|MnO|4|−}}
| −543
|-
| [[Mercury(II) oxide]] (red)
| Solid
| HgO
| −90.83
|-
| [[Mercury sulfide]] (red, [[cinnabar]])
| Solid
| HgS
| −58.2
|-
| [[Nitrogen]]
| Gas
| N<sub>2</sub>
| 0
|-
| [[Ammonia]] (ammonium hydroxide) || Aqueous
|| NH<sub>3</sub> (NH<sub>4</sub>OH) || −80.8
|-
| Ammonia || Gas
|| NH<sub>3</sub> || −46.1
|-
| [[Ammonium nitrate]] || Solid
|| NH<sub>4</sub>NO<sub>3</sub> || −365.6
|-
| [[Ammonium chloride]]
| Solid
| NH<sub>4</sub>Cl
| −314.55
|-
| [[Nitrogen dioxide]]
| Gas
| NO<sub>2</sub>
| 33.2
|-
| [[Hydrazine]]
| Gas
| N<sub>2</sub>H<sub>4</sub>
| 95.4
|-
| [[Hydrazine]]
| Liquid
| N<sub>2</sub>H<sub>4</sub>
| 50.6
|-
| [[Nitrous oxide]]
| Gas
| N<sub>2</sub>O
| 82.05
|-
| [[Nitric oxide]]
| Gas
| NO
| 90.29
|-
| [[Dinitrogen tetroxide]]
| Gas
| N<sub>2</sub>O<sub>4</sub>
| 9.16
|-
| [[Dinitrogen pentoxide]]
| Solid
| N<sub>2</sub>O<sub>5</sub>
| −43.1
|-
| [[Dinitrogen pentoxide]]
| Gas
| N<sub>2</sub>O<sub>5</sub>
| 11.3
|-
|[[Nitric acid]]
|Aqueous
|HNO<sub>3</sub>
|−207
|-
|Monatomic oxygen
|Gas
|O
|249
|-
|[[Oxygen]]
|Gas
|O<sub>2</sub>
|0
|-
|[[Ozone]]
|Gas
|O<sub>3</sub>
|143
|-
| [[White phosphorus]]
| Solid
| P<sub>4</sub>
| 0
|-
| [[Red phosphorus]]
| Solid
| P
| −17.4<ref name=HS>{{Housecroft2nd|page=392}}</ref>
|-
| [[Black phosphorus]]
| Solid
| P
| −39.3<ref name=HS/>
|-
| [[Phosphorus trichloride]]
| Liquid
| PCl<sub>3</sub>
| −319.7
|-
| [[Phosphorus trichloride]]
| Gas
| PCl<sub>3</sub>
| −278
|-
| [[Phosphorus pentachloride]]
| Solid
| PCl<sub>5</sub>
| −440
|-
| [[Phosphorus pentachloride]]
| Gas
| PCl<sub>5</sub>
| −321
|-
| [[Phosphorus pentoxide]]
| Solid
| P<sub>2</sub>O<sub>5</sub>
| −1505.5<ref>{{cite book |editor1-last=Green |editor1-first=D.W. |title=Perry's Chemical Engineers' Handbook |date=2007 |publisher=Mcgraw-Hill |isbn=9780071422949 |pages=2–191 |edition=8th |ref=P2O5}}</ref>
|-
| [[Potassium bromide]]
| Solid
| KBr
| −392.2
|-
| [[Potassium carbonate]]
| Solid
| K<sub>2</sub>CO<sub>3</sub>
| −1150
|-
| [[Potassium chlorate]]
| Solid
| KClO<sub>3</sub>
| −391.4
|-
| [[Potassium chloride]]
| Solid
| KCl
| −436.68
|-
| [[Potassium fluoride]]
| Solid
| KF
| −562.6
|-
| [[Potassium oxide]]
| Solid
| K<sub>2</sub>O
| −363
|-
| [[Potassium nitrate]]
| Solid
| KNO<sub>3</sub>
| −494.5
|-
| [[Potassium perchlorate]]
| Solid
| KClO<sub>4</sub>
| −430.12
|-
| [[Silicon]]
| Gas
| Si
| 368.2
|-
| [[Silicon carbide]]
| Solid
| SiC
| −74.4,<ref>{{cite journal |last1=Kleykamp |first1=H. |title=Gibbs Energy of Formation of SiC: A contribution to the Thermodynamic Stability of the Modifications |journal=Berichte der Bunsengesellschaft für physikalische Chemie |date=1998 |volume=102 |issue=9 |pages=1231–1234 |ref=SiC_a|doi=10.1002/bbpc.19981020928 }}</ref> −71.5<ref>{{cite web| url=https://janaf.nist.gov/tables/C-100.html |title= Silicon Carbide, Alpha (SiC) |author=<!--Not stated--> |date=March 1967 |access-date=5 February 2019|ref=SiC_b}}</ref>
|-
| [[Silicon tetrachloride]]
| Liquid
| SiCl<sub>4</sub>
| −640.1
|-
| [[Silica]] ([[Quartz]])
| Solid
| SiO<sub>2</sub>
| −910.86
|-
| [[Silver bromide]]
| Solid
| AgBr
| −99.5
|-
| [[Silver chloride]]
| Solid
| AgCl
| −127.01
|-
| [[Silver iodide]]
| Solid
| AgI
| −62.4
|-
| [[Silver oxide]]
| Solid
| Ag<sub>2</sub>O
| −31.1
|-
| [[Silver sulfide]]
| Solid
| Ag<sub>2</sub>S
| −31.8
|-
| [[Sodium]] || Solid
|| Na || 0
|-
| Sodium || Gas
|| Na || 107.5
|-
| [[Sodium bicarbonate]] || Solid
|| NaHCO<sub>3</sub> || −950.8
|-
| [[Sodium carbonate]]
| Solid
| Na<sub>2</sub>CO<sub>3</sub>
| −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 chlorate]]
|Solid
|NaClO<sub>3</sub>
| −365.4
|-
| [[Sodium fluoride]]
| Solid
| NaF
| −569.0
|-
| [[Sodium hydroxide]]
| Aqueous
| NaOH
| −469.15
|-
| [[Sodium hydroxide]]
| Solid
| NaOH
| −425.93
|-
|[[Sodium hypochlorite]]
|Solid
|NaOCl
|−347.1
|-
| [[Sodium nitrate]]
| Aqueous
| NaNO<sub>3</sub>
| −446.2
|-
| [[Sodium nitrate]]
| Solid
| NaNO<sub>3</sub>
| −424.8
|-
| [[Sodium oxide]]
| Solid
| Na<sub>2</sub>O
| −414.2
|-
| Sulfur (monoclinic) || Solid
|| S<sub>8</sub> || 0.3
|-
| Sulfur (rhombic) || Solid
|| S<sub>8</sub> || 0
|-
| [[Hydrogen sulfide]]
| Gas
| H<sub>2</sub>S
| −20.63
|-
| [[Sulfur dioxide]]
| Gas
| SO<sub>2</sub>
| −296.84
|-
| [[Sulfur trioxide]]
| Gas
| SO<sub>3</sub>
| −395.7
|-
| [[Sulfuric acid]]
| Liquid
| H<sub>2</sub>SO<sub>4</sub>
| −814
|-
| [[Titanium]]
| Gas
| Ti
| 468
|-
| [[Titanium tetrachloride]]
| Gas
| TiCl<sub>4</sub>
| −763.2
|-
| [[Titanium tetrachloride]]
| Liquid
| TiCl<sub>4</sub>
| −804.2
|-
| [[Titanium dioxide]]
| Solid
| TiO<sub>2</sub>
| −944.7
|-
| [[Zinc]]
| Gas
| Zn
| 130.7
|-
| [[Zinc chloride]]
| Solid
| ZnCl<sub>2</sub>
| −415.1
|-
| [[Zinc oxide]]
| Solid
| ZnO
| −348.0
|-
| [[Zinc sulfate]]|| Solid
|| ZnSO<sub>4</sub> || −980.14
|}

===Aliphatic hydrocarbons===
{| class="wikitable sortable sticky-header"
! Formula !! Name !! Δ<sub>f</sub>''H''<sup>⦵</sup> /(kcal/mol) !! Δ<sub>f</sub>''H''<sup>⦵</sup> /(kJ/mol)
|-
| colspan="4"| '''''Straight-chain'''''
|-
| CH<sub>4</sub> || [[Methane]] || −17.9 || −74.9
|-
| C<sub>2</sub>H<sub>6</sub> || [[Ethane]] || −20.0 || −83.7
|-
| C<sub>2</sub>H<sub>4</sub> || [[Ethylene]] || 12.5 || 52.5
|-
| C<sub>2</sub>H<sub>2</sub> || [[Acetylene]] || 54.2 || 226.8
|-
| C<sub>3</sub>H<sub>8</sub> || [[Propane]] || −25.0 || −104.6
|-
| C<sub>4</sub>H<sub>10</sub> || ''n''-[[Butane]] || −30.0 || −125.5
|-
| C<sub>5</sub>H<sub>12</sub> || ''n''-[[Pentane]] || −35.1 || −146.9
|-
| C<sub>6</sub>H<sub>14</sub> || ''n''-[[Hexane]] || −40.0 || −167.4
|-
| C<sub>7</sub>H<sub>16</sub> || ''n''-[[Heptane]] || −44.9 || −187.9
|-
| C<sub>8</sub>H<sub>18</sub> || ''n''-[[Octane]] || −49.8 || −208.4
|-
| C<sub>9</sub>H<sub>20</sub> || ''n''-[[Nonane]] || −54.8 || −229.3
|-
| C<sub>10</sub>H<sub>22</sub> || ''n''-[[Decane]] || −59.6 || −249.4
|-
| colspan="4"| '''''C<sub>4</sub> Alkane branched isomers'''''
|-
| C<sub>4</sub>H<sub>10</sub> || [[Isobutane]] (methylpropane) || −32.1 || −134.3
|-
| colspan="4"| '''''C<sub>5</sub> Alkane branched isomers'''''
|-
| C<sub>5</sub>H<sub>12</sub> || [[Neopentane]] (dimethylpropane) || −40.1 || −167.8
|-
| C<sub>5</sub>H<sub>12</sub> || [[Isopentane]] (methylbutane) || −36.9 || −154.4
|-
| colspan="4"| '''''C<sub>6</sub> Alkane branched isomers'''''
|-
| C<sub>6</sub>H<sub>14</sub> || [[2,2-Dimethylbutane]] || −44.5 || −186.2
|-
| C<sub>6</sub>H<sub>14</sub> || [[2,3-Dimethylbutane]] || −42.5 || −177.8
|-
| C<sub>6</sub>H<sub>14</sub> || [[2-Methylpentane]] (isohexane) || −41.8 || −174.9
|-
| C<sub>6</sub>H<sub>14</sub> || [[3-Methylpentane]] || −41.1 || −172.0
|-
| colspan="4"| '''''C<sub>7</sub> Alkane branched isomers'''''
|-
| C<sub>7</sub>H<sub>16</sub> || [[2,2-Dimethylpentane]] || −49.2 || −205.9
|-
| C<sub>7</sub>H<sub>16</sub> || [[2,2,3-Trimethylbutane]] || −49.0 || −205.0
|-
| C<sub>7</sub>H<sub>16</sub> || [[3,3-Dimethylpentane]] || −48.1 || −201.3
|-
| C<sub>7</sub>H<sub>16</sub> || [[2,3-Dimethylpentane]] || −47.3 || −197.9
|-
| C<sub>7</sub>H<sub>16</sub> || [[2,4-Dimethylpentane]] || −48.2 || −201.7
|-
| C<sub>7</sub>H<sub>16</sub> || [[2-Methylhexane]] || −46.5 || −194.6
|-
| C<sub>7</sub>H<sub>16</sub> || [[3-Methylhexane]] || −45.7 || −191.2
|-
| C<sub>7</sub>H<sub>16</sub> || [[3-Ethylpentane]] || −45.3 || −189.5
|-
| colspan="4"| '''''C<sub>8</sub> Alkane branched isomers'''''
|-
| C<sub>8</sub>H<sub>18</sub> || [[2,3-Dimethylhexane]] || −55.1 || −230.5
|-
| C<sub>8</sub>H<sub>18</sub> || [[2,2,3,3-Tetramethylbutane]] || −53.9 || −225.5
|-
| C<sub>8</sub>H<sub>18</sub> || [[2,2-Dimethylhexane]] || −53.7 || −224.7
|-
| C<sub>8</sub>H<sub>18</sub> || [[2,2,4-Trimethylpentane]] (isooctane) || −53.5 || −223.8
|-
| C<sub>8</sub>H<sub>18</sub> || [[2,5-Dimethylhexane]] || −53.2 || −222.6
|-
| C<sub>8</sub>H<sub>18</sub> || [[2,2,3-Trimethylpentane]] || −52.6 || −220.1
|-
| C<sub>8</sub>H<sub>18</sub> || [[3,3-Dimethylhexane]] || −52.6 || −220.1
|-
| C<sub>8</sub>H<sub>18</sub> || [[2,4-Dimethylhexane]] || −52.4 || −219.2
|-
| C<sub>8</sub>H<sub>18</sub> || [[2,3,4-Trimethylpentane]] || −51.9 || −217.1
|-
| C<sub>8</sub>H<sub>18</sub> || [[2,3,3-Trimethylpentane]] || −51.7 || −216.3
|-
| C<sub>8</sub>H<sub>18</sub> || [[2-Methylheptane]] || −51.5 || −215.5
|-
| C<sub>8</sub>H<sub>18</sub> || [[3-Ethyl-3-Methylpentane]] || −51.4 || −215.1
|-
| C<sub>8</sub>H<sub>18</sub> || [[3,4-Dimethylhexane]] || −50.9 || −213.0
|-
| C<sub>8</sub>H<sub>18</sub> || [[3-Ethyl-2-Methylpentane]] || −50.4 || −210.9
|-
| C<sub>8</sub>H<sub>18</sub> || [[3-Methylheptane]] || −60.3 || −252.5
|-
| C<sub>8</sub>H<sub>18</sub> || [[4-Methylheptane]] || ? || ?
|-
| C<sub>8</sub>H<sub>18</sub> || [[3-Ethylhexane]] || ? || ?
|-
| colspan="4"| '''''C<sub>9</sub> Alkane branched isomers (selected)'''''
|-
| C<sub>9</sub>H<sub>20</sub> || [[2,2,4,4-Tetramethylpentane]] || −57.8|| −241.8
|-
| C<sub>9</sub>H<sub>20</sub> || [[2,2,3,3-Tetramethylpentane]] || −56.7 || −237.2
|-
| C<sub>9</sub>H<sub>20</sub> || [[2,2,3,4-Tetramethylpentane]] || −56.6 || −236.8
|-
| C<sub>9</sub>H<sub>20</sub> || [[2,3,3,4-Tetramethylpentane]] || −56.4 || −236.0
|-
| C<sub>9</sub>H<sub>20</sub> || [[3,3-Diethylpentane]] || −55.7 || −233.0
|}

===Other organic compounds===

{| class="wikitable sortable sticky-header"
|-
! Species
! Phase
! Chemical formula
! Δ<sub>f</sub>''H''<sup>⦵</sup> /(kJ/mol)
|-
| [[Acetone]] || Liquid
|| C<sub>3</sub>H<sub>6</sub>O || −248.4
|-
| [[Benzene]]
| Liquid
| C<sub>6</sub>H<sub>6</sub>
| 48.95
|-
| [[Benzoic acid]]
| Solid
| C<sub>7</sub>H<sub>6</sub>O<sub>2</sub>
| −385.2
|-
| [[Carbon tetrachloride]]
| Liquid
| CCl<sub>4</sub>
| −135.4
|-
| [[Carbon tetrachloride]]
| Gas
| CCl<sub>4</sub>
| −95.98
|-
| [[Ethanol]]
| Liquid
| C<sub>2</sub>H<sub>5</sub>OH
| −277.0
|-
| [[Ethanol]]
| Gas
| C<sub>2</sub>H<sub>5</sub>OH
| −235.3
|-
| [[Glucose]]
| Solid
| C<sub>6</sub>H<sub>12</sub>O<sub>6</sub>
| −1271
|-
| [[Isopropanol]] || Gas
|| C<sub>3</sub>H<sub>7</sub>OH || −318.1
|-
| [[Methanol]] (methyl alcohol)
| Liquid
| CH<sub>3</sub>OH
| −238.4
|-
| [[Methanol]] (methyl alcohol)
| Gas
| CH<sub>3</sub>OH
| −201.0
|-
| [[Methyl linoleate]] ([[Biodiesel]])
| Gas
| C<sub>19</sub>H<sub>34</sub>O<sub>2</sub>
| −356.3
|-
| [[Sucrose]] || Solid
|| C<sub>12</sub>H<sub>22</sub>O<sub>11</sub> || −2226.1
|-
| [[Trichloromethane]] ([[Chloroform]])
| Liquid
| CHCl<sub>3</sub>
| −134.47
|-
| [[Trichloromethane]] ([[Chloroform]])
| Gas
| CHCl<sub>3</sub>
| −103.18
|-
| [[Vinyl chloride]]
| Solid
| C<sub>2</sub>H<sub>3</sub>Cl
| −94.12
|}