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11
KH CTCT Tên h thng Tên thông dng Tnc,oC
Acid béo no có s C chn
4:0
6:0
8:0
10:0
12:0
14:0
16:0
18:0
20:0
22:0
24:0
26:0
CH3(CH2)2COOH
CH3(CH2)4COOH
CH3(CH2)6COOH
CH3(CH2)8COOH
CH3(CH2)10COOH
CH3(CH2)12COOH
CH3(CH2)14COOH
CH3(CH2)16COOH
CH3(CH2)18COOH
CH3(CH2)20COOH
CH3(CH2)22COOH
CH3(CH2)24COOH
Butanoic acid
Hexanoic acid
Octanoic acid
Decanoic acid
Dodecanoic acid
Tetradecanoic acid
Hexadecanoic acid
Octadecanoic acid
Eicosanoic acid
Docosanoic acid
Tetracosanoic acid
Hexacosanoic acid
Butyric acid
Caproic acid
Caprylic acid
Capric acid
Lauric acic
Myristic acid
Palmytic acid
Stearic acid
Arachidic acid
Behenic acid
Lignoceric aicd
Cerotic acid
-7,9
-3,9
16,3
31,3
44,0
54,4
62,9
69,6
75,4
80,0
84,2
87,7
Acid béo no có s C l
5:0
7:0
9:0
15:0
17:0
CH3(CH2)3COOH
CH3(CH2)5COOH
CH3(CH2)7COOH
CH3(CH2)13COOH
CH3(CH2)15COOH
Pentanoic acid
Heptanoic acid
Nonanoic acid
Pentadecanoic acid
Heptadecanoic acid
Valeric acid
Enanthic acid
Pelargonic acid
Margaric acid
-34,5
-7,5
12,4
52,1
61,3
Acid béo no có phân nhánh
2,6,10,14-tetra methyl pentadecanoic. Pristanic acid
3,7,11,15-tetra methyl hexadecanoic.a Phytanic acid
12
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12:0 Lauric acid dodecanoic
acid
CH3(CH2)10COOH 44.2
14:0 Myristic acid tetradecanoic
acid
CH3(CH2)12COOH 52
16:0 Palmitic acid Hexadecanoic
acid
CH3(CH2)14COOH 63.1
18:0 Stearic acid Octadecanoic
acid
CH3(CH2)16COOH 69.6
20:0 Arachidic aicd Eicosanoic acid CH3(CH2)18COOH 75.4
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3. Giai on kt thúc: polymer hóa
R•+ R• → R–R
R•+ ROO• → RCOOR
R•+ RO• → ROR
ROO•+ ROO• → ROOR + O2
1. Giai on khiu: phát sinh gc t do
RH →R•+ H•
RH + O2→R•+ HOO•(2R•+ H2O2)
2. Giai on phát trin:
phn ng dây chuyn to peroxide , hydroperoxide, acoxyl
R•+ O2→ROO•
ROO•+ RH →RCOOH + R•
ROOH + RH →RO•+ R•+ H2O
2ROOH →ROO•+ R•+ H2O
phn ng tip to ru, cetone, aldehyde
RO•+ RH →ROH + R•
R1HCO•R2→R1HC=O + R2•
R1HCO•R2+ RO• → R1C(O)R2+ ROH
20
KH CTCT Tên thông dng Tnc
Acid béo không no ch có các liên kt ôi dng Cis
18:1(9)
22:1(13)
24:1(15)
NHÓM ω
ωω
ω9
CH3(CH2)7 CH=CHCH2 (CH2)6 COOH
CH3(CH2)7 CH=CHCH2 (CH2)10 COOH
CH3(CH2)7 CH=CHCH2 (CH2)12COOH
Oleic acid
Erucic acid
Nervonic acid
13,4
34,7
42,5
18:2(9,12)
18:3(6,9,12)
20:4(5,8,11,14)
NHÓM ω
ωω
ω6
CH3(CH2)4 (CH=CHCH2)2 (CH2)6 COOH
CH3(CH2)4 (CH=CHCH2)3 (CH2)3 COOH
CH3(CH2)4 (CH=CHCH2)4 (CH2)2 COOH
Linoleic acid
γ
γγ
γ-linolenic acid
Arachidonicnic acid
-5,0
-49,5
18:3(9,12,15)
20:5(5,8,11,14,17)
22:6(4,7,10,13,16,19)
NHÓM ω
ωω
ω3
CH3CH2 (CH=CHCH2)3 (CH2)6 COOH
CH3CH2 (CH=CHCH2)5 (CH2)2 COOH
CH3CH2 (CH=CHCH2)6 CH2COOH
α
αα
α-linolenic acid
EPA
DHA
-11,0
18:1(9)
16:1(9)
14:1(9)
NHÓM ∆
∆∆
∆9
CH3(CH2)7 CH=CHCH2 (CH2)6 COOH
CH3(CH2)5 CH=CHCH2 (CH2)6 COOH
CH3(CH2)3 CH=CHCH2 (CH2)6 COOH
Oleic acid
Palmitoleic acid
Miristoleic acid
13,4
0,5
