Environmental Engineering Reference
In-Depth Information
Table 5.11
Solubility of
glycol dinitrate in 100 mL
water
Temperature (
°
C)
Solubility (g)
0
0.57
15
0.62
20
0.68
50
0.92
Table 5.12
Vapor pressure
of glycol dinitrate [
68
,
69
]
Temperature (
°
C)
Vapor pressure (mmHg)
0
0.0044
20
0.046
30
0.125
40
0.289
50
0.735
60
1.302
70
3.986
80
5.976
90
13.972
100
22.062
nitroglycerine. Its volatility is 2.2 mg/cm
2
/h. Its vapor pressure is increased with
increasing temperatures, as shown in Table
5.12
.
The viscosity of glycol dinitrate is 0.08056 poise at 15
°
C and 0.02831 poise at
40
C, about 10 times smaller than nitroglycerine.
The refractive index of glycol dinitrate is slightly increased with temperatures, as
shown in Table
5.13
.
Glycol dinitrate will be hydrolyzed in the aqueous solution of sodium hydroxide
or potassium hydroxide under heating. If glycol dinitrate is added into the ethanol
solution of potassium hydroxide, a vigorous reaction would take place to produce
potassium nitrite and potassium glycolate.
Glycol dinitrate of 0.008 % can be hydrolyzed by hot water at 60
°
C for 120 h. It
will be decomposed in the condition of concentrated acids in long time.
°
5.3.1.2 Chemical Stability
Glycol dinitrate has high thermal stability and chemical stability [
44
]. Glycol
dinitrate will not be decomposed at 75
C for 260 h, suggesting its stability is better
than nitroglycerines. Its volatility is high. In Abel test, the heat resistance of glycol
dinitrate is 30 min. It would explode at 195
°
200
°
C. The activation energy of its
-
thermal decomposition is E = 149.37 kJ/mol.
Table 5.13
The relationship between the refractive index of glycol dinitrate and temperature [
70
]
Temperature (
°
C)
0
15
25
35
n
1.4546
1.4491
1.4454
1.4417