Paraffin hydrocarbons

Methane

CH₄

−802.3

−890.3

5.0

15.0

−188

600

Ethane

C₂H₆

−1428.6

−1559.8

3.0

12.5

−135

515

Propane

C₃H₈

−2043.1

−2219.9

2.1

9.5

−104

450

Butane

C₄H₁₀

−2657.5

−2877.5

1.8

8.5

−60

405

Isobutane

C₄H₁₀

−2649.0

−2869.0

1.8

8.4

−83

460

Pentane

C₅H₁₂

−3245.0

−3536.6

1.4

7.8

−40

260

Isopentane

C₅H₁₂

−3240.3

−3527.6

1.4

7.6

−57

420

Neopentane

C₅H₁₂

−3250.4

−3514.1

1.4

7.5

−65

450

Hexane

C₆H₁₄

−3855.2

−4194.5

1.2

7.5

−23

234

Heptane

C₇H₁₆

−4464.9

−4780.6

1.0

7.0

−4

223

2,3-Dimethylpentane

C₇H₁₆

−4460.7

−4842.3

1.1

6.7

−15

337

Octane

C₈H₁₈

−5074.1

−5511.6

0.8

6.5

13

220

Nonane

C₉H₂₀

−5685.1

−

0.7

5.6

31

206

Decane

C₁₀H₂₂

−6294.2

−6737.0

0.8

5.4

46

208

Olefins

Ethylene

C₂H₄

−1322.6

−1411.2

2.7

36.0

−136

450

Propylene

C₃H₆

−1925.7

−2057.3

2.0

11.0

−108

455

1-Butene

C₄H₈

−2541.2

−2716.8

1.6

9.3

−79

384

2-Butene

C₄H₈

−2534.4

−2708.2

1.8

9.7

−74

324

1-Pentene

C₅H₁₀

−3129.7

−3361.4

1.5

8.7

−18

273

Acetylenes

Acetylene

C₂H₂

−1255.6

−1299.6

2.5

80.0

−18

305

Aromatics

Benzene

C₆H₆

−3135.6

−3301.4

1.4

7.1

−11

562

Toluene

C₇H₈

−3733.9

−3947.9

1.2

7.1

4

536

o-Xylene

C₈H₁₀

−4332.8

−4567.6

1.0

6.0

17

464

Cyclic hydrocarbons

Cyclopropane

C₃H₆

−1959.3

−2091.3

2.4

10.4

−94

498

Cyclohexane

C₆H₁₂

−3655.8

−3953.0

1.3

8.0

−20

260

Methylcyclohexane

C₇H₁₄

−4257.1

−4600.7

1.2

7.2

−4

285

Phenol

C₆H₆O

−2921.4

1.8

8.6

79

715

Terpenes

Turpentine

C₁₀H₁₆

–

–

0.8

6.8

51

252

Alcohols

Methyl alcohol

CH₄O

−638.1

−764.0

7.5

36.0

11

463

Ethyl alcohol

C₂H₆O

−1235.5

−1409.2

4.3

19.0

13

422

Allyl alcohol

C₃H₆O

−1731.9

−1912.2

2.5

18.0

21

378

n-Propanol

C₃H₈O

−1843.8

−2068.9

2.0

12.0

15

371

Isopropyl alcohol

C₃H₈O

−1830.0

−2051.0

2.0

12.0

12

399

n-Butyl alcohol

C₄H₁₀O

−2456.0

−2728.3

1.4

11.2

29

343

Isoamyl alcohol

C₅H₁₂O

−3062.3

–

1.2

9.0

43

350

Aldehydes

Formaldehyde

CH₂O

−519.4

−570.8

7.0

73

−53

430

Acetaldehyde

C₂H₄O

−1104.6

1.6

10.4

−38

185

Acrolein

C₃H₄O

−1553.5

2.8

31.0

−26

234

Methacrolein

C₄H₆O

−2150.0

−2268.1

2.1

14.6

2

234

Furfural

C₅H₄O₂

−2249.7

−2340.9

2.1

19.3

60

316

Paraldehyde

C₆H₁₂O₃

−3125.2

–

1.3

16.2

36

238

Ethers

Diethyl ether

C₄H₁₀O

−2503.5

−2751.1

1.9

48.0

−45

180

Divinyl ether

C₄H₆O

−2260.0

−2416.2

1.7

27.0

−47

360

Disopropyl ether

C₆H₁₄O

−3702.3

−4043.0

1.4

21.0

−28

443

Ketones

Acetone

C₃H₆O

−1659.2

−1821.4

2.6

12.8

−18

538

Methyl ethyl ketone

C₄H₈O

−2261.6

−2478.7

1.8

10.0

−6

516

2-Pentanone

C₅H₁₀O

−2880.0

−3137.6

1.5

8.2

7

457

2-Hexanone

C₆H₁₂O

−3490.0

−3796.3

1.2

8.0

25

424

Acids

Acetic acid

C₂H₄O₂

−786.4

−926.1

5.4

16.0

43

427

Hydrogen cyanide

HCN

–

–

6.0

41.0

−18

538

Esters

Methyl formate

C₂H₄O₂

−920.9

−1003.0

5.9

20.0

−19

456

Ethyl formate

C₃H₆O₂

−1507.0

−1638.8

2.7

13.5

−4

455

Methyl acetate

C₃H₆O₂

−1461.0

−1628.1

3.1

16.0

−10

502

Ethyl acetate

C₄H₈O₂

−2061.0

−2273.6

2.2

11.4

−4

427

Propyl acetate

C₅H₁₀O₂

−2672.0

–

2.0

8.0

15

450

Isopropyl acetate

C₅H₁₀O₂

−2658.1

−2907.0

1.8

7.2

2

479

Butyl acetate

C₆H₁₂O₂

−3283.0

−3587.8

1.7

7.6

22

421

Isopentyl acetate

C₇H₁₄O₂

−3889.9

−4361.7

1.0

7.5

25

360

Inorganic

Hydrogen

H₂

−241.8

−285.8

4.0

75.0

–

400

Ammonia

NH₃

–

−382.6

16.0

25.0

–

651

Oxides

Carbon monoxide

CO

−283.0

–

12.5

74.0

–

609

Ethylene oxide

C₂H₄O

−1218.0

−1264.0

3.0

–

−55

429

Propylene oxide

C₃H₆O

−1785.3

–

2.1

21.5

−37

465

Dioxane

C₄H₈O₂

−2178.8

–

2.0

22.0

12

180

Sulfur containing

Carbon disulfide

CS₂

−1104.2

−1104.2

1.3

50.0

−30

90

Hydrogen sulfide

H₂S

−

−562.6

4.3

45.0

–

260

Chlorine containing

Methyl chloride

CH₃Cl

−675.4

−687.0

10.7

17.4

−66

632

Ethyl chloride

C₂H₅Cl

−1284.9

−1325.0

3.8

15.4

−50

519

Propyl chloride

C₃H₇Cl

−1864.6

−2001.3

2.8

10.7

−32

593

Butyl chloride

C₄H₉Cl

−2474.2

–

1.8

10.1

−28

460

sec-Butyl chloride

C₄H₉Cl

−2465.2

–

1.9

9.1

−5

–

Amyl chloride

C₅H₁₁Cl

−3085.2

–

1.6

8.6

13

260

Vinyl chloride

C₂H₃Cl

−1158.0

–

3.6

33.0

−78

472

Chlorobenzene

C₆H₅Cl

−2976.1

–

1.3

7.1

32

638

Ethylene dichloride

C₂H₂Cl₂

−994.5

−1133.8

5.6

12.8

4

460

Propylene dichloride

C₃H₆Cl₂

−1704.6

–

3.4

14.5

16

557

Bromides

Methyl bromide

CH₃Br

−705.4

−768.9

10.0

16.0

−44

537

Ethyl bromide

C₂H₅Br

−1284.4

−1424.6

6.7

11.3

−33

511

Amines

Methyl amine

CH₅N

−975.1

−1085.1

4.9

20.7

−58

430

Ethyl amine

C₂H₇N

−1587.4

−1739.9

3.5

14.0

−46

384

Dimethyl amine

C₂H₇N

−1614.6

−1768.9

2.8

14.4

−50

400

Propyl amine

C₃H₉N

−2164.8

−2396.6

2.0

10.4

−12

318

Diethyl amine

C₄H₁₁N

−2800.3

−3074.3

1.8

10.1

−26

312

Trimethyl amine

C₃H₉N

−2244.9

−2443.0

2.0

11.6

−7

190

Triethyl amine

C₆H₁₅N

−4044.5

−4134.5

1.2

8.0

−12

–

Miscellaneous

Acrylonitrile

C₃H₃N

−1690.0

−1789.1

2.4

17.3

0

481

Aniline

C₆H₇N

−3238.5

–

1.3

11

70

617

Diborane

B₂H₆

–

–

0.8

98

−90

52

Methyl methacrylate

C₅H₈O₂

−2546.8

2.1

12.5

11

–

Styrene

C₈H₈

−4219.3

−4438.8

1.1

6.1

32

490

Gasoline

1.4

7.6

−43