Millons base

SEMCONDUCTORS - COITPOUND SEMICONDUCTORS] (Vol2l) Millon s base [12529-66-7]... 

Mercury iodide aquabasic ammonobasic (Iodide of Millon s base) Mercury nitride Methazoic acid... 

Chondrofoline, CgjHgjOjNj, 2H2O, crystallises from methyl alcohol in triangular plates, m.p. about 135°, [ajffg — 280-6° (dry base N/10. HCl). It is a phenolic base, contains three methoxyl groups, does not give a Millon reaction, but in methyl alcoholic solution gives a faint, pink-purple colour with ferric chloride. The nitrate forms needles m.p. 225° (dec.). 

The anhydride of Millon s base explodes if touched or heated to 130°C. 

A mercury manometer used with ammonia became blocked by deposition of a grey-brown solid, which exploded dining attempts to remove it mechanically or on heating. The solid appeared to be a dehydration product of Millon s base and was freely soluble in sodium thiosulfate solution. This method of cleaning is probably safer than others, but the use of mercury manometers with ammonia should be avoided as intrinsically unsafe [1,2]. Although pure dry ammonia and mercury do not react even under pressure at 340 kbar and 200° C, the presence of traces of water leads to the formation of an explosive compound, which may explode during depressurisation of the system [3], Explosions in mercury-ammonia systems had been reported previously [4,5],... 

Several explosive salts including the acetylide, azide, borate, bromate, chlorate, chromate, iodate (and ammonium iodate double salt), nitrite, perchlorate (and ammonium perchlorate double salt), periodate, permanganate, picrate and trinitrobenzoate were prepared. The 3 latter salts and the acetylide, azide and bromate are impact-sensitive detonators [1], It appears probable that many of the explosively unstable compounds [2], formed in various ways from interaction of mercury or its compounds with ammonia or its salts, may have the common polymeric structure now recognised for Millon s base [3], This is a silica-like network of N+ and Hg in 4- and 2-coordination, respectively, with OH and water in the interstitial spaces. Individually indexed compounds are Poly(dimercuryimmonium acetylide)... 

The yellow oxide reacts with aqueous ammonia to yield a bright yellow crystalline powder, dihydroxymercury(ll)—ammonium hydroxide, known as Millon s base, [(HO-Hg)2NH2]OH [12529-66-7], a photosensitive unstable product. 

Compounds where both ammonolysis and hydrolysis take place. For example, the chloride of Millon s base, NH2HgO.IIgCl. 

Millon s base itself is regarded by Franklin and others as the hydroxyl compound, dimcrcurihydroxy-animonium hydroxide, Ilg(OH) a.NH aOH. It is obtained in yellow crystals by allowing ammonia in aqueous solution to act on mercuric oxide ... 

Zinc Sulphate, Zinc Nitrate—Derivatives of Cadmium. Halides, Cadmium Sulphate, Cadmium Nitrate—Derivatives of Merouric Halides-—Amnrino-mercurio Salts, Ammonolysed Compounds, Millon s Base. 

Reeves 8c Giddens stabilized cellulose nitrate with ammonia(Ref 31). Sampey(Ref 28) observed that the residue resulting from the reaction of ammonia with Hg exploded in a steel U tube connected with a glass Hg manometer when an attempt was made to clean the tube with a steel rod. Some of die gray-brown solid residue was recovered and detonated by heating in a crucible. Analysis indicated that the residue consisted of dehydration products of Millon s base[See CR 140. 853 (1905)1 and was readily sol in NaaSaO,. 5HjO... 

Salts of Millon s Base.—Suspend a little of the base in water and shake with a dilute solution of potassium iodide. The solution turns alkaline. The brown precipitate is the same as that produced by Nessler s solution in tests for ammonia. 

Figure 17 The cubic (Hg2N)+ network of Millon s base in (Hg2N)(0H)-2H20...

Figure 18 The hexagonal (Hg2N)+ network in the bromide of Millon s base (Hg2N)Br...

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