CH₃CCH

Methyl acetylene, Propyne, CH3C2H
Flags: Detected, RATE12
Empirical: C₃H₄
Mass: 40 amu
Dipole moment: 0.780 D
Heat of formation: 195.1 kJ mol^-1
Added to system: 2003-04-28 18:00:51

Reactions: Formation | Destruction

12 CH₃CCH formation reactions

	Reaction	α	β	γ	T_l - T_u (K)
1	CH₂CHCCH + CRPHOT → CH₃CCH + C	1.30e-17	0.00	500.00	10 - 41000
2	C₃H₅⁺ + e^- → CH₃CCH + H	1.50e-7	-0.50	0.00	10 - 300
3	C₃H₆⁺ + e^- → CH₃CCH + H₂	1.50e-7	-0.50	0.00	10 - 300
4	C₃H₇⁺ + e^- → CH₃CCH + H₂ + H	3.30e-8	-0.73	0.00	10 - 300
5	C₄H₅⁺ + e^- → CH₃CCH + CH	1.50e-7	-0.50	0.00	10 - 300
6	C₃H₅⁺ + C₆H₆ → C₆H₇⁺ + CH₃CCH	1.15e-10	0.00	0.00	10 - 300
7	C₃H₅⁺ + HC₃N → HC₃NH⁺ + CH₃CCH	1.00e-10	-0.50	0.00	10 - 41000
8	CH₃COCH₃⁺ + CH₃CHCH₂ → CH₃COCH₄⁺ + CH₃CCH + H	4.00e-10	0.00	0.00	10 - 41000
9	C₂H + CH₃CHCH₂ → CH₃CCH + C₂H₃	1.42e-10	-1.24	57.60	15 - 295
10	C + C₂H₅ → CH₃CCH + H	2.00e-10	0.00	0.00	10 - 300
11	CH + C₂H₄ → CH₃CCH + H	2.21e-10	-0.62	32.90	23 - 726
12	CH₂CHCCH + PHOTON → CH₃CCH + C	5.65e-10	0.00	1.60	10 - 41000

	Reaction	α	β	γ	T_l - T_u (K)
1	C⁺ + CH₃CCH → C₃H₄⁺ + C	5.70e-10	0.00	0.00	10 - 41000
2	C₂H₂⁺ + CH₃CCH → C₃H₄⁺ + C₂H₂	5.00e-10	0.00	0.00	10 - 300
3	H⁺ + CH₃CCH → C₃H₄⁺ + H	2.00e-9	0.00	0.00	10 - 41000
4	CH₃CCH + CRPHOT → C₃H₄⁺ + e^-	1.30e-17	0.00	2652.50	10 - 41000
5	CH₃CCH + CRPHOT → CH₂CCH + H	1.30e-17	0.00	1642.00	10 - 41000
6	C⁺ + CH₃CCH → C₂H₂⁺ + C₂H₂	1.90e-10	0.00	0.00	10 - 41000
7	C⁺ + CH₃CCH → C₂H₃⁺ + C₂H	1.90e-10	0.00	0.00	10 - 41000
8	C⁺ + CH₃CCH → C₄H₂⁺ + H₂	5.70e-10	0.00	0.00	10 - 41000
9	C⁺ + CH₃CCH → CH₂CCH⁺ + CH	3.80e-10	0.00	0.00	10 - 41000
10	C₂H₂⁺ + CH₃CCH → C₅H₅⁺ + H	5.00e-10	0.00	0.00	10 - 41000
11	C₂H₂⁺ + CH₃CCH → CH₃C₄H⁺ + H₂	5.00e-10	0.00	0.00	10 - 41000
12	C₂H₃⁺ + CH₃CCH → C₃H₅⁺ + C₂H₂	5.00e-10	0.00	0.00	10 - 41000
13	C₂H₃⁺ + CH₃CCH → C₅H₅⁺ + H₂	5.00e-10	0.00	0.00	10 - 41000
14	C₂H₄⁺ + CH₃CCH → C₄H₅⁺ + CH₃	8.00e-10	0.00	0.00	10 - 41000
15	C₃H₂⁺ + CH₃CCH → C₄H₂⁺ + C₂H₄	1.17e-10	0.00	0.00	10 - 41000
16	C₃H₂⁺ + CH₃CCH → C₄H₃⁺ + C₂H₃	1.56e-10	0.00	0.00	10 - 41000
17	C₃H₂⁺ + CH₃CCH → C₄H₄⁺ + C₂H₂	5.33e-10	0.00	0.00	10 - 41000
18	C₃H₂⁺ + CH₃CCH → C₅H₃⁺ + CH₃	2.34e-10	0.00	0.00	10 - 41000
19	C₃H₂⁺ + CH₃CCH → C₆H₅⁺ + H	2.60e-10	0.00	0.00	10 - 41000
20	C₃H₄⁺ + CH₃CCH → C₃H₅⁺ + CH₂CCH	1.98e-10	0.00	0.00	10 - 41000
21	C₃H₄⁺ + CH₃CCH → C₆H₅⁺ + H₂ + H	8.80e-11	0.00	0.00	10 - 41000
22	C₃H₄⁺ + CH₃CCH → C₆H₇⁺ + H	7.48e-10	0.00	0.00	10 - 41000
23	CH₃CCH + C₃H₅⁺ → C₆H₇⁺ + H₂	3.50e-10	0.00	0.00	10 - 41000
24	CH₃CCH + C₄H⁺ → C₇H₄⁺ + H	1.20e-9	0.00	0.00	10 - 41000
25	C₄H₂⁺ + CH₃CCH → C₇H₅⁺ + H	1.26e-9	0.00	0.00	10 - 41000
26	CH₃CCH + C₄H₂⁺ → CH₃C₄H⁺ + C₂H₂	1.40e-10	0.00	0.00	10 - 41000
27	CH₃CCH + C₄H₃⁺ → C₇H₅⁺ + H₂	1.00e-9	0.00	0.00	10 - 41000
28	CH₃CCH + C₅H₂⁺ → C₈H₄⁺ + H₂	1.10e-9	0.00	0.00	10 - 41000
29	CH₃CCH + C₆H₂⁺ → C₉H₄⁺ + H₂	1.10e-9	0.00	0.00	10 - 41000
30	H⁺ + CH₃CCH → CH₂CCH⁺ + H₂	2.00e-9	0.00	0.00	10 - 41000
31	H₃⁺ + CH₃CCH → CH₂CCH⁺ + H₂ + H₂	2.25e-9	0.00	0.00	10 - 41000
32	H₃O⁺ + CH₃CCH → C₃H₅⁺ + H₂O	1.80e-9	0.00	0.00	10 - 41000
33	HCO⁺ + CH₃CCH → C₃H₅⁺ + CO	1.40e-9	0.00	0.00	10 - 41000
34	He⁺ + CH₃CCH → C₃⁺ + He + H₂ + H₂	5.00e-10	0.00	0.00	10 - 41000
35	He⁺ + CH₃CCH → C₃H⁺ + He + H₂ + H	5.00e-10	0.00	0.00	10 - 41000
36	He⁺ + CH₃CCH → C₃H₂⁺ + He + H₂	5.00e-10	0.00	0.00	10 - 41000
37	He⁺ + CH₃CCH → CH₂CCH⁺ + He + H	5.00e-10	0.00	0.00	10 - 41000
38	Si⁺ + CH₃CCH → SiC₂H⁺ + CH₃	3.00e-10	0.00	0.00	10 - 41000
39	Si⁺ + CH₃CCH → SiC₂H₃⁺ + CH	7.20e-10	0.00	0.00	10 - 41000
40	Si⁺ + CH₃CCH → SiCH₂⁺ + C₂H₂	1.80e-10	0.00	0.00	10 - 41000
41	C₂H + CH₃CCH → CH₃C₄H + H	2.92e-10	0.00	0.00	10 - 100
42	C₂H + CH₃CCH → CH₃C₄H + H	2.10e-10	-0.30	0.00	101 - 300
43	C + CH₃CCH → C₄H₃ + H	2.38e-10	-0.11	0.00	10 - 300
44	C + CH₃CCH → HC₄H + H₂	4.20e-11	-0.11	0.00	10 - 300
45	CH₃CCH + C₄H → C₆H₂ + CH₃	1.59e-10	-1.18	91.10	39 - 300
46	CH₃CCH + C₄H → CH₃C₆H + H	1.59e-10	-1.18	91.10	39 - 300
47	CH + CH₃CCH → CH₂CHCCH + H	4.20e-10	-0.23	16.00	10 - 280
48	CN + CH₃CCH → CH₃C₃N + H	4.10e-10	0.00	0.00	10 - 300
49	CH₃CCH + PHOTON → C₃H₄⁺ + e^-	2.20e-9	0.00	2.40	10 - 41000
50	CH₃CCH + PHOTON → CH₂CCH + H	3.30e-9	0.00	1.70	10 - 41000
51	CH₃CCH + PHOTON → H₂CCC + H₂	2.25e-10	0.00	1.70	10 - 41000

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

CH3CCH

CH₃CCH