No.	Gas Phase Reactions	A^*	β (-)	E_a (cal/mol)	Ref.
1.	H + H + M = H₂ + M	1.00 × 10¹⁸	−1.0	0.0	[15]
	H₂ Enhanced by 2.0
2.	H + H + H₂ = H₂ + H₂	9.20 × 10¹⁶	−0.6	0.0	[15]
3.	CH₃ + CH₃ (+M) = C₂H₆ (+M)	9.22 × 10¹⁶	−1.174	636.0	[16]
	Low pressure limit: 1.14 × 10³⁶ –5.246 1705.0
	TROE centering: 0.405 1120.0 69.6 1.0 × 10¹⁵
	H₂ Enhanced by 2.0
4.	CH₃ + H (+M) = CH₄ (+M)	2.14 × 10¹⁵	–0.4	0.0	[17]
	Low pressure limit: 3.31 × 10³⁰ –4.0 2108.0
	TROE centering: 0.0 1.00 × 10^–15 1.0 × 10^–15 40
	H₂ Enhanced by 2.0
5.	CH₄ + H = CH₃ + H₂	2.20 × 10⁴	3.0	8750.0	[18]
6.	CH₃ + H = CH₂ + H₂	9.00 × 10¹³	0.0	15100.0	[18]
7.	CH₃ + M = CH + H₂ + M	6.90 × 10¹⁴	0.0	82469.0	[19]
8.	CH₃ + M = CH₂ + H + M	1.90 × 10¹⁶	0.0	91411.0	[19]
9.	CH₂ + H = CH + H₂	1.00 × 10¹⁸	–1.56	0.0	[18]
10.	CH₂ + CH₃ = C₂H₄ + H	4.00 × 10¹³	0.0	0.0	[18]
11.	CH₂ + CH₂ = C₂H₂ + H + H	4.00 × 10¹³	0.0	0.0	[18]
12.	CH₂(S) + M = CH₂ + M	1.00 × 10¹³	0.0	0.0	[18]
	H₂ Enhanced by 12.0
	C₂H₂ Enhanced by 4.0
13.	CH₂(S) + CH₄ = CH₃ + CH₃	4.00 × 10¹³	0.0	0.0	[18]
14.	CH₂(S) + C₂H₆ = CH₃ + C₂H₅	1.20 × 10¹⁴	0.0	0.0	[18]
15.	CH₂(S) + H₂ = CH₃ + H	7.00 × 10¹³	0.0	0.0	[18]
16.	CH₂(S) + H = CH + H₂	3.00 × 10¹³	0.0	0.0	[18]
17.	CH₂(S) + CH₃ = C₂H₄ + H	2.00 × 10¹³	0.0	0.0	[18]
18.	CH + H = C + H₂	1.50 × 10¹⁴	0.0	0.0	[18]
18.	CH + CH₂ = C₂H₂ + H	4.00 × 10¹³	0.0	0.0	[18]
20.	CH + CH₃ = C₂H₃ + H	3.00 × 10¹³	0.0	0.0	[18]
21.	CH + CH₄ = C₂H₄ + H	6.00 × 10¹³	0.0	0.0	[18]
22.	C + CH₃ = C₂H₂ + H	5.00 × 10¹³	0.0	0.0	[18]
23.	C + CH₂ = C₂H + H	5.00 × 10¹³	0.0	0.0	[18]
24.	C₂H₆ + CH₃ = C₂H₅ + CH₄	5.50 × 10⁻¹	4.0	8300.0	[18]
25.	C₂H₆ + H = C₂H₅ + H₂	5.40 × 10²	3.5	5210.0	[18]
26.	C₂H₅ + H = C₂H₄ + H₂	1.25 × 10¹⁴	0.0	8000.0	[15]
27.	C₂H₅ + H = CH₃ + CH₃	3.00 × 10¹³	0.0	0.0	[20]
28.	C₂H₅ + H = C₂H₆	1.00 × 10¹⁴	0.0	0.0	[15]
29.	C₂H₄ + H = C₂H₃ + H₂	3.36 × 10⁻⁷	6.0	1692.0	[21]
30.	C₂H₄ + CH₃ = C₂H₃ + CH₄	6.62	3.7	9500.0	[15]
31.	C₂H₄ + H (+M) = C₂H₅ (+M)	1.08 × 10¹²	0.454	1822.0	[22]
	Low pressure limit: 1.112 × 10³⁴ –5.0 4448.0
	TROE centering: 1.0 1.00 × 10^–15 95.0 200.0
	H₂ Enhanced by 2.0