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488 CHEMISTRY AND TECHNOLOGY OF EXPLOSIVES

In Table 111 data for the solubility of picric acid in dilute nitric acid at 25°C

are given.

TABLE 111

SOLUBILITY OF PICRIC ACID IN NITRIC ACID (DRUCKER [42])

HNO 3 concentration Picric acid concentration

mole/l. mole/l.

O.OOOOO 0.05327

0.00635 0.05095

0.02564 0.04281

0.05166 0.03493

0.0872 0.02604

In organic solvents picric acid dissolves more readily than in water as Table

112 shows.

TABLE 112

SOLUBILITY OF PICRIC ACID IN ORGANIC SOLVENTS

Solvent Temperature

°C

Amount of

the solvent

Amount of

picric acid

Ethyl alcohol

Ethyl ether

Ethyl ether (water

saturated)

Benzene

Benzene

Toluene

Amyl alcohol

25 100 parts 7.452 parts

(^13100) ,, 1.08 ,,
13
6
15
20
20
100 ,,
100 ,,
100
100 ml solution
100 ,, ,,
4.00 ,,
3.50 ,,
5.9 ,,
12.0 g
1.755 g
The solubility of picric acid in aqueous solutions of methyl-, ethyl-, isopropyl-
and n-propyl alcohols, as well as of acetone has also been determined (Duff and
Bills [43]), Table 113.
TABLE 113
SOLUBILITY OF PICRIC ACID IN AQUEOUS SOLUTIONS OF ORGANIC SOLVENTS
Percentage of the Grammes of picric acid per 100 g of the solvent at 25°C
organic component
of the solution Methyl alcohol Ethyl alcohol Acetone
0 1.3 1.3 1.3
(^30) 2.4 3.1 9.5
60 7.1 10.5 46.7
80 - 13.8 87.8
81
85
13.8 -

• ’ 13.2
  90 16.0 12.3
  100 21.1 8.0 43