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.. common
H2
H
CO
OH
HCO+
C
H3+
C+
H2O
e-

.. in RATE12
C
C+
C-
C10
C10+
C10-
C10H
C10H+
C10H-
C10H2
C10H2+
C10H3+
C11
C11+
C2
C2+
C2-
C2H
C2H+
C2H-
C2H2
C2H2+
C2H3
C2H3+
C2H4
C2H4+
C2H5
C2H5+
C2H5CN
C2H5CNH+
C2H5OH
C2H5OH+
C2H5OH2+
C2H7+
C2N
C2N+
C2N2+
C2NH+
C2O
C2O+
C2S
C2S+
C3
C3+
C3-
C3H
C3H+
C3H-
C3H2
C3H2+
C3H2O+
C3H3+
C3H4+
C3H5+
C3H6+
C3H7+
C3N
C3N+
C3N-
C3O
C3O+
C3P
C3S
C3S+
C4
C4+
C4-
C4H
C4H+
C4H-
C4H2+
C4H3
C4H3+
C4H4+
C4H5+
C4H7+
C4N
C4N+
C4P
C4P+
C4S
C4S+
C5
C5+
C5-
C5H
C5H+
C5H-
C5H2
C5H2+
C5H3+
C5H5+
C5N
C5N+
C5N-
C6
C6+
C6-
C6H
C6H+
C6H-
C6H2
C6H2+
C6H3+
C6H4+
C6H5+
C6H6
C6H6+
C6H7+
C7
C7+
C7-
C7H
C7H+
C7H-
C7H2
C7H2+
C7H3+
C7H4+
C7H5+
C7N
C7N+
C8
C8+
C8-
C8H
C8H+
C8H-
C8H2
C8H2+
C8H3+
C8H4+
C8H5+
C9
C9+
C9-
C9H
C9H+
C9H-
C9H2
C9H2+
C9H3+
C9H4+
C9H5+
C9N
C9N+
CCP
CCP+
CCl
CCl+
CF+
CH
CH+
CH-
CH2
CH2+
CH2CCH
CH2CCH+
CH2CCH2
CH2CHCCH
CH2CHCHCH2
CH2CHCN
CH2CHCN+
CH2CHCNH+
CH2CN
CH2CN+
CH2CO
CH2CO+
CH2NH
CH2NH2+
CH2PH
CH3
CH3+
CH3C3N
CH3C3N+
CH3C3NH+
CH3C4H
CH3C4H+
CH3C5N
CH3C5NH+
CH3C6H
CH3C7N
CH3C7NH+
CH3CCH
CH3CH3
CH3CH3+
CH3CHCH2
CH3CHO
CH3CHO+
CH3CHOH+
CH3CN
CH3CN+
CH3CNH+
CH3CO+
CH3COCH3
CH3COCH3+
CH3COCH4+
CH3CS+
CH3OCH3
CH3OCH3+
CH3OCH4+
CH3OH
CH3OH+
CH3OH2+
CH4
CH4+
CH4N+
CH5+
CN
CN+
CN-
CNC+
CNO
CO
CO+
CO2
CO2+
COOCH4+
CP
CP+
CRP
CRPHOT
CS
CS+
Cl
Cl+
ClO
ClO+
F
F+
Fe
Fe+
H
H+
H-
H2
H2+
H2C4N+
H2C7N+
H2C9N+
H2CCC
H2CCl+
H2CN
H2CNO+
H2CO
H2CO+
H2CS
H2CS+
H2Cl+
H2F+
H2NC+
H2NCO+
H2NO+
H2O
H2O+
H2O2
H2OCN+
H2PO+
H2S
H2S+
H2S2
H2S2+
H2SiO
H2SiO+
H3+
H3C3O+
H3C5N+
H3C7N+
H3C9N+
H3CO+
H3CS+
H3O+
H3S+
H3S2+
H3SiO+
H5C2O2+
HC2O+
HC2P
HC2P+
HC2S+
HC3N
HC3N+
HC3NH+
HC3O+
HC3S+
HC4H
HC4N+
HC4S+
HC5N
HC5N+
HC5NH+
HC7N
HC7N+
HC9N
HC9N+
HCN
HCN+
HCNH+
HCNO
HCNO+
HCNOH+
HCO
HCO+
HCO2+
HCOOCH3
HCOOH
HCOOH+
HCOOH2+
HCP
HCP+
HCS
HCS+
HCSi
HCSi+
HCl
HCl+
HF
HF+
HN2O+
HNC
HNC3
HNCO
HNCO+
HNCOH+
HNO
HNO+
HNS+
HNSi
HNSi+
HOC+
HOCN
HOCN+
HOCS+
HONC
HONC+
HPN+
HPO
HPO+
HS
HS+
HS2
HS2+
HSO+
HSO2+
HSiO2+
HSiS+
He
He+
HeH+
Mg
Mg+
N
N+
N2
N2+
N2H+
N2O
N2O+
NCCN
NCCNCH3+
NCCNH+
NH
NH+
NH2
NH2+
NH2CN
NH2CNH+
NH3
NH3+
NH4+
NO
NO+
NO2
NO2+
NS
NS+
Na
Na+
O
O+
O-
O2
O2+
O2-
O2H
O2H+
OCN
OCN+
OCS
OCS+
OH
OH+
OH-
P
P+
PC2H2+
PC2H3+
PC2H4+
PC3H+
PC4H+
PCH2+
PCH3+
PCH4+
PH
PH+
PH2
PH2+
PH3+
PHOTON
PN
PN+
PNH2+
PNH3+
PO
PO+
S
S+
S-
S2
S2+
SO
SO+
SO2
SO2+
Si
Si+
SiC
SiC+
SiC2
SiC2+
SiC2H
SiC2H+
SiC2H2
SiC2H2+
SiC2H3+
SiC3
SiC3+
SiC3H
SiC3H+
SiC3H2+
SiC4
SiC4+
SiC4H+
SiCH2
SiCH2+
SiCH3
SiCH3+
SiCH4+
SiF+
SiH
SiH+
SiH2
SiH2+
SiH3
SiH3+
SiH4
SiH4+
SiH5+
SiN
SiN+
SiNC
SiNC+
SiNCH+
SiNH2+
SiO
SiO+
SiO2
SiOH+
SiS
SiS+
e-

H2CO

Formaldehyde, Methanal
Flags: Detected, RATE12
Empirical: CH2O
Mass: 30 amu
Dipole moment: 2.330 D
Heat of formation: -104.7 kJ mol-1
Added to system: 2003-04-28 18:00:51

Reactions: Formation | Destruction

91 H2CO formation reactions

ReactionαβγTl - Tu (K)
1C- + H2O → H2CO + e-5.00e-10 0.00 0.0010 - 41000
2CH2 + O- → H2CO + e-5.00e-10 0.00 0.0010 - 41000
3CH + OH- → H2CO + e-5.00e-10 0.00 0.0010 - 41000
4H- + HCO → H2CO + e-1.00e-9 0.00 0.0010 - 41000
5CH2 + H2CO+ → H2CO + CH2+4.30e-10 0.00 0.0010 - 41000
6CH + H2CO+ → H2CO + CH+3.10e-10-0.50 0.0010 - 41000
7H2CO+ + Fe → Fe+ + H2CO1.90e-9 0.00 0.0010 - 41000
8H2CO+ + S → S+ + H2CO5.50e-10 0.00 0.0010 - 41000
9HCO + H2CO+ → H2CO + HCO+3.60e-10-0.50 0.0010 - 41000
10Mg + H2CO+ → H2CO + Mg+2.90e-9 0.00 0.0010 - 41000
11NH3 + H2CO+ → H2CO + NH3+4.25e-10-0.50 0.0010 - 41000
12NO + H2CO+ → H2CO + NO+7.80e-10 0.00 0.0010 - 41000
13Na + H2CO+ → H2CO + Na+2.60e-9 0.00 0.0010 - 41000
14Si + H2CO+ → H2CO + Si+2.00e-9 0.00 0.0010 - 41000
15CH3OCH3 + CRPHOT → H2CO + CH41.30e-17 0.00857.0010 - 41000
16CH3OH + CRPHOT → H2CO + H21.30e-17 0.001584.0010 - 41000
17C2H5OH+ + e- → H2CO + CH41.50e-7-0.50 0.0010 - 300
18CH3CHOH+ + e- → CH2 + H2CO + H8.47e-7-0.74 0.0010 - 1000
19CH3CHOH+ + e- → H2CO + CH38.47e-7-0.74 0.0010 - 1000
20CH3OH+ + e- → H2CO + H + H8.61e-7-0.66 0.0010 - 1000
21CH3OH2+ + e- → H2CO + H2 + H8.90e-8-0.59 0.0010 - 300
22H3CO+ + e- → H2CO + H2.17e-7-0.78 0.0010 - 1000
23CH+ + CH3OH → H2CO + CH3+1.45e-9-0.50 0.0010 - 41000
24CH2 + SiO+ → H2CO + Si+8.20e-10 0.00 0.0010 - 41000
25CH3+ + CH3CHO → H2CO + C2H5+3.03e-9-0.50 0.0010 - 41000
26CH3OH + S2+ → H2S2+ + H2CO7.83e-10-0.50 0.0010 - 41000
27CH + H3CO+ → H2CO + CH2+6.20e-10-0.50 0.0010 - 41000
28H2O + H3CO+ → H2CO + H3O+2.30e-10-0.50 0.0010 - 41000
29H3+ + CH3CHO → CH5+ + H2CO8.28e-10-0.50 0.0010 - 41000
30H3CO+ + CH3OH → CH3OH2+ + H2CO1.90e-9-0.50 0.0010 - 41000
31H3CO+ + H2S → H3S+ + H2CO5.00e-10-0.50 0.0010 - 41000
32H3CO+ + HC4H → C4H3+ + H2CO9.30e-10 0.00 0.0010 - 41000
33H3CO+ + HCOOH → HCOOH2+ + H2CO2.00e-9-0.50 0.0010 - 41000
34HCN + H3CO+ → H2CO + HCNH+1.30e-9-0.50 0.0010 - 41000
35HNC + H3CO+ → H2CO + HCNH+1.30e-9-0.50 0.0010 - 41000
36He+ + CH3OCH3 → H2CO + CH3+ + He + H2.00e-9-0.50 0.0010 - 41000
37NH2 + H3CO+ → H2CO + NH3+8.80e-10-0.50 0.0010 - 41000
38NH3 + H3CO+ → H2CO + NH4+2.30e-9-0.50 0.0010 - 41000
39Na + H3CO+ → H2CO + Na+ + H2.60e-9 0.00 0.0010 - 41000
40O2+ + CH2CCH2 → CH2CO+ + H2CO2.60e-11 0.00 0.0010 - 41000
41O2+ + CH3CHCH2 → CH3CHO+ + H2CO1.50e-11 0.00 0.0010 - 41000
42O + SiCH2+ → H2CO + Si+6.00e-10 0.00 0.0010 - 41000
43SO+ + C2H4 → H2CS+ + H2CO2.20e-10 0.00 0.0010 - 41000
44C- + H2CO+ → C + H2CO7.51e-8-0.50 0.0010 - 41000
45C10- + H2CO+ → C10 + H2CO7.51e-8-0.50 0.0010 - 41000
46C10H- + H2CO+ → C10H + H2CO7.51e-8-0.50 0.0010 - 41000
47C2- + H2CO+ → C2 + H2CO7.51e-8-0.50 0.0010 - 41000
48C2H- + H2CO+ → C2H + H2CO7.51e-8-0.50 0.0010 - 41000
49C3- + H2CO+ → C3 + H2CO7.51e-8-0.50 0.0010 - 41000
50C3H- + H2CO+ → C3H + H2CO7.51e-8-0.50 0.0010 - 41000
51C3N- + H2CO+ → C3N + H2CO7.51e-8-0.50 0.0010 - 41000
52C4- + H2CO+ → C4 + H2CO7.51e-8-0.50 0.0010 - 41000
53C4H- + H2CO+ → C4H + H2CO7.51e-8-0.50 0.0010 - 41000
54C5- + H2CO+ → C5 + H2CO7.51e-8-0.50 0.0010 - 41000
55C5H- + H2CO+ → C5H + H2CO7.51e-8-0.50 0.0010 - 41000
56C5N- + H2CO+ → C5N + H2CO7.51e-8-0.50 0.0010 - 41000
57C6- + H2CO+ → C6 + H2CO7.51e-8-0.50 0.0010 - 41000
58C6H- + H2CO+ → C6H + H2CO7.51e-8-0.50 0.0010 - 41000
59C7- + H2CO+ → C7 + H2CO7.51e-8-0.50 0.0010 - 41000
60C7H- + H2CO+ → C7H + H2CO7.51e-8-0.50 0.0010 - 41000
61C8- + H2CO+ → C8 + H2CO7.51e-8-0.50 0.0010 - 41000
62C8H- + H2CO+ → C8H + H2CO7.51e-8-0.50 0.0010 - 41000
63C9- + H2CO+ → C9 + H2CO7.51e-8-0.50 0.0010 - 41000
64C9H- + H2CO+ → C9H + H2CO7.51e-8-0.50 0.0010 - 41000
65CH- + H2CO+ → CH + H2CO7.51e-8-0.50 0.0010 - 41000
66CN- + H2CO+ → CN + H2CO7.51e-8-0.50 0.0010 - 41000
67H- + H2CO+ → H + H2CO7.51e-8-0.50 0.0010 - 41000
68O- + H2CO+ → O + H2CO7.51e-8-0.50 0.0010 - 41000
69O2- + H2CO+ → O2 + H2CO7.51e-8-0.50 0.0010 - 41000
70OH- + H2CO+ → OH + H2CO7.51e-8-0.50 0.0010 - 41000
71S- + H2CO+ → S + H2CO7.51e-8-0.50 0.0010 - 41000
72C2H3 + O2 → H2CO + HCO8.87e-12-0.7322.70200 - 362
73CH2 + NO2 → H2CO + NO6.91e-11 0.00 0.00295 - 295
74CH2 + NO → H2CO + N2.70e-12 0.003500.00116 - 300
75CH2 + O2 → H2CO + O3.65e-11-3.301443.001000 - 1828
76CH2 + OH → H2CO + H3.00e-11 0.00 0.0010 - 2500
77CH3 + NO2 → H2CO + HNO5.41e-12 0.00 0.00298 - 298
78CH3 + O2 → H2CO + OH5.64e-13 0.004500.00298 - 3000
79CH3 + O → H2CO + H1.30e-10 0.00 0.0010 - 2500
80CH3 + OH → H2CO + H21.70e-12 0.00 0.00700 - 700
81CH3CHCH2 + OH → H2CO + C2H52.08e-11-2.03170.0058 - 293
82HCO + HCO → H2CO + CO3.00e-11 0.00 0.00300 - 2500
83HCO + HNO → H2CO + NO1.00e-12 0.001000.00300 - 2500
84HCO + O2H → O2 + H2CO5.00e-11 0.00 0.00300 - 2500
85O + C2H4 → H2CO + CH24.20e-11 0.002520.00226 - 2500
86O + C2H5 → H2CO + CH32.67e-11 0.00 0.0010 - 2500
87CH3OCH3 + PHOTON → H2CO + CH41.50e-9 0.00 1.6010 - 41000
88CH3OH + PHOTON → H2CO + H27.00e-10 0.00 2.3010 - 41000
89HCOOCH3 + PHOTON → H2CO + H2CO1.38e-9 0.00 1.7010 - 41000
90HCOOCH3 + PHOTON → H2CO + H2CO1.38e-9 0.00 1.7010 - 41000
91H2CO+ + e- → H2CO + PHOTON1.10e-10-0.70 0.0010 - 300

Variation of log fractional abundance (relative to H2) with log time (years) in a dark cloud model. Ref. RATE12 paper.