Environmental Engineering Reference
In-Depth Information
Table 5.10
Properties of two isomers of glycerol nitrate [
3
]
Con
guration
Density (g/cm
3
)
Melting point (
°
C)
Boiling point (
°
C)
ʱ
1.53
58.5
-
59.0
159 (15 mmHg)
ʲ
1.52
54
155 (15 mmHg)
5.2.8 Property and Preparation of Glycerol Nitrate [
3
]
ʱ
ʲ
Glycerol nitrate, also called as mononitroglycerin, has
isomers. Their
melting point and boiling point are slightly different. The discrimination between
two isomers is listed in Table
5.10
.
Molecular formula: C
3
H
7
NO
5
Chemical structure:
and
Molecular weight: 137.08
Oxygen balance:
52.52 % (CO
2
-based)
Nitrogen content: 10.22 %
−
CH
2
ONO
2
CH
2
OH
CH
2
ONO
2
CH
2
ONO
2
-H
2
O
CH
2
ONO
2
CH
2
ONO
2
CH
O
CHOH
CH
2
CH
2
OH
CHONO
2
CH
2
OH
Glycerol nitrate is a very stable compound. It would be decomposed at 100
°
C
and be exploded at 170
C in a sealed container.
Glycerol nitrate is a weak explosive with obvious negative oxygen balance. Its
explosive heat (water vapor condition) is about 1815.9 J/g. Its shock sensitivity is
low, thus that it can be a desensitizer. The instability for detonation is related to its
physical status. The lead-block value of glycerol nitrate is only 75 cm
3
. The crystal
of glycerol nitrate is easy to be detonated with lead-block value of 245 cm
3
.
°
