| Insoluble | Insoluble
Olive " | Soluble | Soluble
Stearine oil | " | "
Mineral jelly | Insoluble | Insoluble
Glycerine | " | "
Benzene | Soluble | Soluble
Nitro-benzene | " | "
Toluene | " | "
Carbon bi-sulphide | Insoluble | Slightly affected
Turpentine | " | Soluble
Petroleum naphtha, 71 deg.-76 deg. B.| " | Insoluble
Caustic soda (1:10 solution) | Insoluble. | Insoluble.
Borax, 5% solution | " | "
Ammonia (.980) | " | " slightly
| | affected.
Ammonium sulph-hydrate | Insoluble, sulphur | Decomposed.
| separates |
Iron sulphate solution | Slightly affected | Affected.
Iron chloride (1.4 grm. Fe | Slowly affected | Decomposed.
to 10 c.c. N_{2}O) | |
Tin chloride | Slightly affected | Affected.
_____________________________|______________________|__________________

Many attempts have been made to prepare nitro-glycerine explosives capable
of withstanding comparatively low temperatures without freezing, but no
satisfactory solution of the problem has been found. Among the substances
that have been proposed and used with more or less success, are nitro-
benzene, nitro-toluene, di-nitro-mono-chlorhydrine, solid nitro
derivatives of toluene,[A] are stated to lower the freezing point of
nitro-glycerine to -20 deg.C. without altering its sensitiveness and
stability. The subject has been investigated by S. Nauckhoff,[B] who
states that nitroglycerine can be cooled to temperatures (-40 deg. to -50 deg. C.)
much below its true freezing point, without solidifying, by the addition
of various substances. When cooled by means of a mixture of solid carbon,
dioxide, and ether, it sets to a glassy mass, without any perceptible
crystallisation. The mass when warmed to 0 deg.C. first rapidly liquefies and
then begins to crystallise. The true freezing point of pure nitro-
glycerine was found to be 12.3 deg.C. The