CH₃CHO

Acetaldehyde
Flags: Detected, RATE12
Empirical: C₂H₄O
Mass: 44 amu
Dipole moment: 2.690 D
Heat of formation: -155.0 kJ mol^-1
Added to system: 2003-04-28 18:00:51

Reactions: Formation | Destruction

8 CH₃CHO formation reactions

	Reaction	α	β	γ	T_l - T_u (K)
1	CH₃CHOH⁺ + e^- → CH₃CHO + H	3.00e-7	-0.74	0.00	10 - 1000
2	CH₃COCH₃⁺ + e^- → CH₃CHO + CH₂	1.50e-7	-0.50	0.00	10 - 300
3	CH₃COCH₄⁺ + e^- → CH₃CHO + CH₃	1.50e-7	-0.50	0.00	10 - 300
4	NH₃ + CH₃CHOH⁺ → CH₃CHO + NH₄⁺	1.80e-9	-0.50	0.00	10 - 41000
5	CH₃CHCH₂ + OH → CH₃CHO + CH₃	2.08e-11	-2.03	170.00	58 - 293
6	CH + CH₃OH → CH₃CHO + H	2.49e-10	-1.93	0.00	298 - 753
7	O + C₂H₅ → CH₃CHO + H	1.33e-10	0.00	0.00	10 - 2500
8	OH + C₂H₃ → CH₃CHO + PHOTON	5.00e-21	0.00	0.00	10 - 300

	Reaction	α	β	γ	T_l - T_u (K)
1	C⁺ + CH₃CHO → CH₃CHO⁺ + C	1.50e-9	-0.50	0.00	10 - 300
2	H⁺ + CH₃CHO → CH₃CHO⁺ + H	3.60e-9	-0.50	0.00	10 - 300
3	CH₃CHO + CRPHOT → CH₃CHO⁺ + e^-	1.30e-17	0.00	559.50	10 - 41000
4	CH₃CHO + CRPHOT → CO + CH₄	1.30e-17	0.00	263.50	10 - 41000
5	CH₃CHO + CRPHOT → HCO + CH₃	1.30e-17	0.00	263.50	10 - 41000
6	C⁺ + CH₃CHO → CH₃CO⁺ + CH	1.50e-9	-0.50	0.00	10 - 41000
7	CH₃⁺ + CH₃CHO → CH₃CO⁺ + CH₄	1.65e-10	-0.50	0.00	10 - 41000
8	CH₃⁺ + CH₃CHO → H₂CO + C₂H₅⁺	3.03e-9	-0.50	0.00	10 - 41000
9	CH₃⁺ + CH₃CHO → H₃CO⁺ + C₂H₄	1.98e-9	-0.50	0.00	10 - 41000
10	CH₃CHO + HCOOH₂⁺ → CH₃CHOH⁺ + HCOOH	2.90e-9	-0.50	0.00	10 - 41000
11	CH₃CHO + S₂⁺ → HS₂ + CH₃CO⁺	2.20e-9	-0.50	0.00	298 - 299
12	H₃⁺ + CH₃CHO → C₂H₃⁺ + H₂ + H₂O	8.97e-10	-0.50	0.00	10 - 41000
13	H₃⁺ + CH₃CHO → C₂H₅⁺ + H₂O	7.59e-10	-0.50	0.00	10 - 41000
14	H₃⁺ + CH₃CHO → CH₃⁺ + CH₃OH	1.45e-9	-0.50	0.00	10 - 41000
15	H₃⁺ + CH₃CHO → CH₃CHOH⁺ + H₂	1.52e-9	-0.50	0.00	10 - 41000
16	H₃⁺ + CH₃CHO → CH₃CO⁺ + H₂ + H₂	4.14e-10	-0.50	0.00	10 - 41000
17	H₃⁺ + CH₃CHO → CH₅⁺ + H₂CO	8.28e-10	-0.50	0.00	10 - 41000
18	H₃⁺ + CH₃CHO → H₃O⁺ + C₂H₄	1.04e-9	-0.50	0.00	10 - 41000
19	H₃O⁺ + CH₃CHO → CH₃CHOH⁺ + H₂O	3.60e-9	-0.50	0.00	10 - 41000
20	HCO⁺ + CH₃CHO → CH₃CHOH⁺ + CO	3.40e-9	-0.50	0.00	10 - 41000
21	He⁺ + CH₃CHO → HCO + CH₃⁺ + He	3.00e-9	-0.50	0.00	10 - 41000
22	CH₃CHO + PHOTON → CH₃CHO⁺ + e^-	4.60e-10	0.00	2.30	10 - 41000
23	CH₃CHO + PHOTON → CO + CH₄	1.10e-9	0.00	1.50	10 - 41000
24	CH₃CHO + PHOTON → HCO + CH₃	1.10e-9	0.00	1.50	10 - 41000
25	CH₃⁺ + CH₃CHO → CH₃COCH₄⁺ + PHOTON	2.15e-11	-0.66	0.00	10 - 300

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

CH3CHO

CH₃CHO