乙腈 的一些性质如下所述。
中文名：乙腈 （ jīng ）
化学式：CH3 CN（或写作MeCN）
CAS号：75-05-8
英文名：Acetonitrile
外观：无色液体
相性质
三相点 [ 3] 229.32 K (–43.83 °C), 167 Pa
临界点
545 K (272 °C), 4.87 MPa
标准熔化焓变 , Δfus H o 8.167 kJ/mol (crystal I → liq)
标准熔化熵变, Δfus S o
35.61 J/(mol·K) (crystal I → liq)
标准汽化焓变, Δvap H o
33.225 kJ/mol at 25°C
标准汽化熵变, Δvap S o
111.44 J/(mol·K) at 25°C
固体性质
标准摩尔生成焓 , Δf H o solid
? kJ/mol at 25°C
标准摩尔熵 ,S o solid
? J/(mol K)
热容量 , cp
92.36 J/(mol K)at 298.15 K
标准相变焓变, Δtrs H o
0.8979 kJ/mol at –56.2°C
标准相变熵变, Δtrs S o
4.14 J/(mol·K) at –56.2°
液体性质
标准摩尔生成焓 , Δf H o liquid
–40.56 kJ/mol
标准摩尔熵 ,S o liquid
149.62 J/(mol K)
燃烧热 , Δc H o –1256.33 kJ/mol
热容量 , cp
91.7 J/(mol K) at 25°C
气体性质
标准摩尔生成焓 , Δf H o gas
–74.04 kJ/mol
标准摩尔熵 ,S o gas
? J/(mol K)
燃烧热 , cp
? J/(mol K)
压力（mmHg） 1
10
40
100
400
760
温度（°C） –47.0(s)
–16.3
7.7
27.0
62.5
81.8
Table data obtained from CRC Handbook of Chemistry and Physics , 44th ed. The "(s)" notation indicates temperature of solid/vapor equilibrium. Otherwise the data is temperature of liquid/vapor equilibrium.
log10 of Acetonitrile vapor pressure. Uses formula
log
e
P
m
m
H
g
=
{\displaystyle \scriptstyle \log _{e}P_{mmHg}=}
log
e
(
760
101.325
)
−
3.881710
log
e
(
T
+
273.15
)
−
4999.618
T
+
273.15
+
41.05901
+
3.515956
×
10
−
06
(
T
+
273.15
)
2
{\displaystyle \scriptstyle \log _{e}({\frac {760}{101.325}})-3.881710\log _{e}(T+273.15)-{\frac {4999.618}{T+273.15}}+41.05901+3.515956\times 10^{-06}(T+273.15)^{2}}
[ 2]
Vapor-liquid Equilibrium for Acetonitrile/Water [ 4] P = 760 mmHg
沸点（°C）
乙腈摩尔百分数
液相
气相
86.5
2.9
26.3
81.1
9.3
50.5
80.0
14.2
55.9
78.6
25.4
61.7
77.4
40.2
65.5
76.7
50.7
66.4
76.6
52.7
67.3
76.0
71.8
72.8
76.6
83.9
78.0
76.8
85.6
76.1
80.4
98.6
94.5
Vapor-liquid Equilibrium for Acetonitrile/Methanol [ 4] P = 760 mmHg
沸点（°C）
甲醇摩尔百分数
液相
气相
79.20
2.5
9.5
77.95
4.0
13.5
76.77
5.5
17.5
75.12
9.7
26.5
73.12
14.0
33.0
72.07
17.0
37.5
70.96
20.0
420
68.85
24.7
45.5
68.39
28.9
50.5
66.00
41.5
59.5
65.35
47.0
62.5
64.75
54.5
65.5
64.34
63.0
71.5
64.03
69.0
74.5
63.80
74.5
78.9
63.77
82.5
82.5
63.76
86.0
86.0
63.87
90.0
88.0
64.05
93.0
91.5
64.18
95.0
93.0
64.40
97.0
95.5
Vapor-liquid Equilibrium for Acetonitrile/Benzene [ 4] P = 760 mmHg
沸点（°C）
苯摩尔百分数
液相
气相
80.6
2.0
4.8
80.4
2.7
6.2
79.0
5.6
12.5
78.5
6.5
14.7
78.0
7.7
16.5
76.0
17.6
29.3
74.9
24.2
35.5
74.4
29.9
39.3
73.8
37.1
43.8
73.7
38.0
44.9
73.4
44.0
48.5
73.2
51.3
51.9
73.0
52.94
52.94
73.2
58.1
54.5
73.4
66.5
60.0
73.8
71.3
62.6
74.0
76.7
65.7
74.4
79.0
68.0
76.3
92.0
80.1
Vapor-liquid Equilibrium for Acetonitrile/Toluene [ 4] P = 760 mmHg
沸点（°C）
甲苯摩尔百分数
液相
气相
81.5
3.3
5.1
81.4
6.9
8.1
81.1
12.18
12.18
81.3
18.2
15.4
81.4
22.1
17.2
81.8
28.4
19.5
82.7
37.5
23.0
84.4
53.3
28.4
85.6
60.5
31.5
91.1
78.5
41.7
93.4
84.0
47.3
95.6
87.6
52.6
101.2
92.9
66.5
103.6
95.6
73.8
106.7
97.7
83.6
107.5
98.2
85.4
UV-Vis
λmax
? nm
消光系数 , ε
?
IR
主要吸收峰[ 5]
(liquid film)
Wave number
transmittance
3675 cm−1
79%
3544 cm−1
81%
3202 cm−1
77%
3164 cm−1
60%
3003 cm−1
52%
2944 cm−1
52%
2629 cm−1
81%
2410 cm−1
81%
2293 cm−1
44%
2254 cm−1
4%
1445 cm−1
30%
1378 cm−1
25%
1181 cm−1
84%
1040 cm−1
43%
918 cm−1
47%
750 cm−1
70%
NMR
1 H NMR
13 C NMR
其它核磁共振数据
MS
Masses of
反应物
反应方程式
反应条件
作为配体
氧化亚铜 、六氟磷酸 Cu2 O + 2 HPF6 + 8 CH3 CN → 2 [Cu(CH3 CN)4 ]PF6 + H2 O
镍 、氟硼酸亚硝酰 Ni + 6 CH3 CN + 2 NOBF4 → [Ni(CH3 CN)6 ](BF4 )2 + 2 NO
^ 1.0 1.1 Sigma Aldrich Solvent Center . [22 May 2014] . （原始内容存档 于2017-10-19）. 引用错误：带有name属性“Sigma-Aldrich”的<ref>标签用不同内容定义了多次 ^ 2.0 2.1 2.2 Pure Component Properties (Queriable database) . Chemical Engineering Research Information Center. [15 May 2007] . （原始内容存档 于2007-06-03）. ^ Vapor Pressures of Acetonitrile Determined by Comparative Ebulliometry, Michael B. Ewing* and Jesus C. Sanchez Ochoa, Journal of Chemical & Engineering Data 2004 49 (3), 486-491
^ 4.0 4.1 4.2 4.3 Binary Vapor-Liquid Equilibrium Data . Chemical Engineering Research Information Center. [15 May 2007] . （原始内容 (Queriable database) 存档于2007-08-29）. ^ Spectral Database for Organic Compounds . Advanced Industrial Science and Technology. [7 June 2007] . （原始内容 (Queriable database) 存档于2006-05-05）.
