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List of Molecules

The following table lists the molecules presently in the line-by-line, traditional part of the HITRAN database, showing their assigned number in the HITRAN sequence along with their isotopologues (using the AFGL shorthand notation) and the isotopic abundance adopted for the database.

Isotopic Abundances Used for HITRAN

based on P. De Bievre, N.E. Holden, and I.L. Barnes,
"Isotopic Abundances and Atomic Weights of the Elements,"
J.Phys.Chem.Ref.Data 13, 809-891 (1984)

Molecule

Isotopologue

Abundance

H2O (1)

161

0.997317

181

1.99983 10-3

171

3.71884 10-4

162

3.10693 10-4

182

6.23003 10-7

172

1.15853 10-7

CO2 (2)

626

0.984204

636

1.10574 10-2

628

3.94707 10-3

627

7.33989 10-4

638

4.43446 10-5

637

8.24623 10-6

828

3.95734 10-6

827

1.47180 10-6

838

4.44600 10-8

837

1.65354 10-8

O3 (3)

666

0.992901

668

3.98194 10-3

686

1.99097 10-3

667

7.40475 10-4

676

3.70237 10-4

N2O (4)

446

0.990333

456

3.64093 10-3

546

3.64093 10-3

448

1.98582 10-3

447

3.69280 10-4

CO (5)

26

0.986544

36

1.10836 10-2

28

1.97822 10-3

27

3.67867 10-4

38

2.22250 10-5

37

4.13292 10-6

CH4 (6)

211

0.988274

311

1.11031 10-2

212

6.15751 10-4

312

6.91785 10-6

O2 (7)

66

0.995262

68

3.99141 10-3

67

7.42235 10-4

NO (8)

46

0.993974

56

3.65431 10-3

48

1.99312 10-3

SO2 (9)

626

0.945678

646

4.19503 10-2

NO2 (10)

646

0.991616

NH3 (11)

4111

0.995872

5111

3.66129 10-3

HNO3 (12)

146

0.989110

OH (13)

61

0.997473

81

2.00014 10-3

62

1.55371 10-4

Molecule

Isotopologue

Abundance

HF (14)

19

0.999844

HCl (15)

15

0.757587

17

0.242257

HBr (16)

19

0.506781

11

0.493063

HI (17)

17

0.999844

ClO (18)

56

0.755908

76

0.241720

OCS (19)

622

0.937395

624

4.15828 10-2

632

1.05315 10-2

623

7.39908 10-3

822

1.87967 10-3

H2CO (20)

126

0.986237

136

1.10802 10-2

128

1.97761 10-3

HOCl (21)

165

0.755790

167

0.241683

N2 (22)

44

0.992687

HCN (23)

124

0.985114

134

1.10676 10-2

125

3.62174 10-3

CH3Cl (24)

215

0.748937

217

0.239491

H2O2 (25)

1661

0.994952

C2H2 (26)

1221

0.977599

1231

2.19663 10-2

C2H6 (27)

1221

0.976990

1231

2.19526 10-2

PH3 (28)

1111

0.999533

COF2 (29)

269

0.986544

SF6 (30)

29

0.950180

H2S (31)

121

0.949884

141

4.21369 10-2

131

7.49766 10-3

HCOOH (32)

126

0.983898

HO2 (33)

166

0.995107

O (34)

6

0.997628

ClONO2 (35)

5646

0.749570

7646

0.239694

NO+ (36)

46

0.993974

HOBr (37)

169

0.505579

161

0.491894

C2H4 (38)

221

0.977294

231

2.19595 10-2

CH3OH (39)

2161

0.985930

CH3Br (40)

219

0.500995

211

0.487433

CH3CN (41)

2124

0.973866

CF4 (42)

29

0.988890

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