Physical and chemical properties

Methanol

Gasoline

Benzene

Molecular weight [g/mole]

32.04

~100 (c)

78.11 (c)

Elemental composition by weight
% Oxygen
% Carbon
% Hydrogen

50%
37.5%
12.5%

Specific gravity

0.7915 @ 60¡F (f)

0.72-0.78 (c)

0.88(c)

Boiling point [¡C]

64.7

27-225 (b)

80.1(c)

Water solubility [mg/L]

miscible

100-200 (c)

1,780

Vapor pressure
[mm Hg] (@ 25¡C)
[psi] (@ 100¡F) (e)

126
4.63

--
7-15

76, 95 (c)
---

Heat of combustion [kJ/kg] (b)

19,930

43,030

---

Henryâs Law constant [atm m³ g^-1 mole^-1]

4.55 x 10^-6
4.42 x 10^-6 (c)

---

5.43 x 10^-3 (c)

Henryâs Law constant [-] @ 25°C

1.087 x 10^-4

---

0.22

Liquid Dispersion Coefficient @ [m²/s] 25°C

1.65 x 10^-9

---

9.95 x 10^-10

Log K_oc

0.921
0.44 (c)

---

1.8-1.99
1.50-2.16 (c)

Log K_ow

-0.77
-0.75(c)

---

2.13
1.56-2.15 (c)

Flammability Limits (b):

Lower (LFL)
  Volume percent
  Temperature (¡C)

6.0
7

1.4
-43

---

Upper (UFL)
  Volume percent
  Temperature (¡C)

36.5
43

7.6
-30 to-12

---

Flash Point (¡C)

12¡C (54¡F) (a)

-43 (¡F)

---

Vapor Density @ 1 atm; 10°C (b)

1.4

2-5

3.4