Solubility mercury fulminate

The nitroisonitrosoacetic acid loses carbon dioxide to form formonitrolic acid which (6) decomposes further into nitrous acid and fulminic acid, and (7) the fulminic acid reacts with the mercury nitrate to form the sparingly soluble mercury fulminate which precipitates. 

Kast [14] found that the grey mercury fulminate is the purest and contains 99.7-99.9% of mercury fulminate, soluble in hydrochloric acid. The insoluble residue is composed mainly of mercurous chloride which is probably derived from impurities of the starting substances. 

The solubility of mercury fulminate in water is low. According to Holleman [23], 100 ml of water dissolve ... 

Mercury fulminate has a sweetish metallic taste. When administered orally it is as poisonous as the majority of mercury compounds. Since, however, it is very sparingly soluble in water its toxicity through contact with the skin is insignificant. Nor is it toxic to lower plants, e.g. moulds often form on the moist bags in which mercury fulminate is stored. 

Sodium fulminate, soluble in water, has a molecular weight which corresponds8 to the simple monomolecular formula, NaONC. These facts, taken together with the fact that mercury fulminate warmed with concentrated aqueous hydrochloric acid yields hy-droxylamine and formic acid,9 prove that fulminic acid is the oxime of carbon monoxide. 

Cyanuric triazide is insoluble in water, slightly soluble in cold alcohol, and readily soluble in acetone, benzene, chloroform, ether, and hot alcohol. It melts at 94°, and decomposes when heated above 100°. It may decompose completely without detonation if it is heated slowly, but it detonates immediately from flame or from sudden heating. The melted material dissolves TXT and other aromatic nitro compounds. Small crystals of cyanuric triazide are more sensitive than small crystals of mercury fulminate, and have exploded while being pressed into a detonator capsule. Large crystals from fusion or from recrystallization have detonated when broken by the pressure of a rubber policeman.43... 

Properties White, pulped fibers, having a nitrogen content of 13.2-13.5 per cent, only partly soluble in ether-alcohol, completely soluble in acetone. Deteriorates under heat, but is stable in moist condition. In fiber form it is a high explosive gelatinized, it is a low-order explosive. The dry fiber can be detonated with mercury fulminate. Dry guncotton can be used as initiator for the detonation of wet guncotton. Rate of detonation (13 per cent nitrogen) 6300 m/sec. (d = 1.7). 

Lead azide forms needle like crystals, or a white powder. It begins to decompose when heated to 250 Celsius, and explodes when heated to 350 Celsius. Lead azide is more stable then mercury fulminate, and is an outstanding booster or transfer explosive found in blasting caps, detonators, and fuses. The salt is insoluble in water, but soluble in acetic acid. Lead azide is a standard military initiating explosive (mixed with dextrose to desensitize it). ... 

HGNTA forms heavy, granular crystals, which are not very soluble in water—the crystals are stable in nitric acid. HGNTA detonates when heated to 215 Celsius. Its percussion sensitivity is similar to mercury fulminate, and it s used in primers for bullets and the like. It can also be used in booster compositions in place of, or in combination with lead azide or... 

CHAPTER 17 THE PREPARATION OF NITRO TETRAZOLES LNTA forms heavy, granular, yellowish white crystals, which are not very soluble in water—the crystals are more readily soluble in hot water. LNTA detonates when heated to 220 Celsius, and is slightly more percussion sensitive then mercury fulminate as a result, its use in priming compositions has been questioned, but it can be safely desensitized by mixing with dextrose, flour, or gum Arabic immediately after preparation. The desensitized product can be successfully used in priming compositions for use in bullet primers and the like. ... 

The Analysis of Cap Composition.—Messrs F.W. Jones and F.A. Willcox ( Chem. News Dec. 11,1896) have proposed the following process for the analysis of this substance --Cap composition usually consists of the ingredients—potassium chlorate, antimony sulphide, and mercury fulminate, and to estimate these substances in the presence of each other by ordinary analytical methods is a difficult process. Since the separation of antimony sulphide and mercury fulminate in the presence of potassium chlorate necessitates the treatment of the mixture with hydrochloric acid, and this produces an evolution of hydrogen sulphide from the sulphide, and a consequent precipitation of sulphur and potassium chlorate cannot be separated from the other ingredients by treatment with water, owing to the appreciable solubility of mercury fulminate in cold water. 

Mercury fulminate is also soluble in aqueous alkaline cyanides (e.g., KCN). The solubility depends on the concentration of cyanide solution (up to one-to-one ratio of MF to cyanide can be obtained) because the soluble double-salt Hg(CNO)2 KCN forms [15]. The MF in its white form can be precipitated back from this solution by addition of diluted nitric acid [3, 15, 57]. However, the purification of MF by recrystallization from cyanide solution is not effective, as the purity increases only slightly, e.g., from 98.39 to 98.60%. Boiling a cyanide... 

It is further soluble in alkali cyanides, pyridine, and potassium iodide. Thiosulphate decomposes SF in a similar manner to that of mercury fulminate and may be used for nonexplosive decomposition of this substance. SF is insoluble in nitric add [28, 35]. Alike MF, silver fulminate reacts with concentrated hydrochloric acid. This... 

Fulminating Copper. Digest copper, in powder or filings, witn fulminate of mercury or of silver,. and a little water. It forms soluble green crystals that explode with a green flame. 

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