Preparation and Properties of Liquid Nitrate Ester - Liquid Explosives - page 251

Fig. 5.19 The volatilization
loss of nitro isobutyl glycerine
trinitrate with time at different
temperature [ 5 ]

1.0

0.8

80 °C

0.6

0.4

0.2

70 °C

°C 68

0.0

0 2 4 6 8 10 12 14 16 18 20

time(h)

Molecular weight: 286.11
Oxygen balance: 0
Nitrogen content: 19.58 %
Density: 1.6171 g/cm 3 C)

Viscosity: 308.55 centipoises (20

(20 °

° C)

Freezing point: C

Refractive index: n 2 d ¼

− 39 °

4896
Formation heat: 702.08 J/g (constant volume) or 200.83 kJ/mol (constant vol-
ume) or 226.35 kJ/mol (constant pressure)
Combustion heat: 2217.52 kJ/mol (constant volume) or 7765.5 J/g (constant
volume)
Vapor pressure and volatility: Less than nitroglycerine. Nitro isobutyl glycerine
trinitrate is little volatile at room temperature without odor. It is slightly volatile at
30

1 :

C with odor of tar and acridity. The volatility is increased at elevated tem-
perature. It is obviously volatile at 50

°

10 mg/
cm/day. The relationship of the volatility of nitro isobutyl glycerine trinitrate and
temperature is shown in Fig. 5.19 and its vapor pressures are listed in Table 5.49 .
The relationship between the surface tension of nitro isobutyl glycerine trinitrate
and temperature is shown in Table 5.50 .

° C. Its volatility at 25 ° C is 0.127 ×

Table 5.49 Vapor pressure of nitro isobutyl glycerine trinitrate [ 5 ]
Temperature
(

40 50 60 70 80

° C)

2.74 × 10 − 4 5.00 × 10 − 4 14.8 × 10 − 4 33.6 × 10 − 4 79.3 × 10 − 4 Vapor pres-

sure (mmHg)

Table 5.50 Relationship between the surface tension of nitro isobutyl glycerine trinitrate and
temperature [ 5 ]
Temperature ( ° C) 20 30 40 50 60