Environmental Engineering Reference
In-Depth Information
Table 5.27
A summary of
freezing points of different
phases of nitroglycerine (
°
C)
Phases
Ref. [
3
]
Ref. [
3
]
Ref. [
3
]
Ref. [
3
]
Unstable
2.1
2.2
1.9
1.9
-
-
Stable
12.4
13.2
13.0
13.0
Table 5.28
Crystal line
speed of stable nitroglycerine
phase
Temperature (
°
C)
Speed (mm/min)
+5
0.145
0
1.183
−
5
0.267
−
17
0.125
Table 5.29
The solubility of
nitroglycerine in 1,000 mL
water
Solution temperature (
°
C)
Nitroglycerine mass (g)
15
1.6
20
1.8
50
2.5
Table 5.30
The solubility of
nitroglycerine in ethanol [
3
]
Ethanol
Temperature
(
°
C)
Solubility (g/100 ml
ethanol)
Anhydrous
0
~30
Anhydrous
20
~43
96 %
20
31.6
50 %
20
1.8
25 %
20
0.7
the maximum solubility of nitroglycerine is 1.0 g. Nitroglycerine itself is a good
solvent. It can be dissolved into most of organic solvents and mutually dissolved
into methanol and acetic ether in any ratios at room temperature. It is also mutually
dissolved into nitrate esters, azide nitrate esters, and dichloroethylene in any ratios.
However, only 20 units of nitroglycerine can be dissolved into 100 units of tri-
chloroethylene at room temperature. Nitroglycerine is very hard to be dissolved into
tetrachloroethylene and pentachloroethane.
The solubility of nitroglycerine is related to the temperature of solvents and
water contents. In anhydrous ethanol, the solubility is increased with temperature.
At 50
°
C, nitroglycerine can be mutually dissolved into 96 % or anhydrous ethanol.
Table
5.30
shows the solubility of nitroglycerine in ethanol.
Nitroglycerine is slightly dissolved into polybasic alcohols. It is slightly soluble
in propanol, isopropanol, and amyl alcohol solvents at room temperature, but it is
mutually soluble in those solvents at 90
100
°
C. 100 g glycol can dissolve 20 and
-
12 g nitroglycerine at 200 and 80
C, respectively. The solubility of nitroglycerine
is very low in glycerine. It is easily soluble in 65 % acetic acid, hardly soluble in
°
