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(Michael S) #1
OTHER NITRO DERIVATIVES OF PHENOLS

TABLE 119 (continued)

527

According to Tucholski [9] According to
T. Urbanski and Slon [10]

Temperature
Content of of dehydra- Initiation Sensitiveness Sensitiveness
water of tion to the Melting tem- to impact
Picrate point (10% explosion)

to flame
crystalli- next lower peraturc (number
zation hydrate of swings*)

°C °C °C 2 kg 10 kg

Cu 11 H 2 O 30
8 H 2 O 35
5 H 2 O 12
3 H 2 O 120.5
anhydrous - - 290 30 cm 16
Zn 10 H 2 O 51
8 H 2 O 54.5
6 H 2 O 101
2 H 2 O 151
anhydrous - - 303 noexplosion 35
Sr 5 H 2 O 87
1 H 2 O 216 17 cm
anhydrous - 290 341
Ag anhydrous - 296 332
Cd 7 H 2 O 44
4 H 2 O 69
1 H 2 O 144
anhydrous - - 328
Ba 6 H 2 O 46.5
5 H2O 63
2 H 2 O 86
1 H 2 O 195 2.5 cm 4
anhydrous 200 332
Hg 4 H 2 O 65
3 H 2 O ca. 103
1 H 2 O ca. 144 ca. 290 333
Tl anhydrous - - 301
Pb 1 H 2 O 130
anhydrous 2cm 10
l Nitrocellulose ignites from 1 swing, gunpowder from 8 swings.

AMMONIUM PICRATE

There are two forms of ammonium picrate: yellow and red. Cahours [11]
drew attention to this fact in 1849. Anselmino [12], Stepanov [13] and a number


of other authors have studied the problem of the existence of two differently coloured

forms of the compound. Dehn and Ball [14] expressed the opinion that the two


forms of ammonium picrate are, as Hantzsch suggested, chromoisomers, and that
the phenol form should be assigned to the yellow modification, while the red one

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