Ammonium bronze

Having treated this subject more in the manner of a poet than a scientist [savant], the result is that it is difficult to know exactly his [Dumas s] thought.. . . Whether this statue should be in bronze, in marble, or in ivory the material is of little importance, says M. Dumas it is always the same statue, the same type. In effect, it little matters that this sulfate is a salt of copper, or of lead or of iron it always belongs to the sulfate type. But where do we stop ammonium sulfate, sulfuric ether, alum, do they belong to the sulfate type 54... 

Ammonium monosulfide is used in photographic developer to apply patina to bronze and in textile manufacture. 

Pb azide, Pb nitrophenols, Pb triethanol-ammonium perchlorate and PETN or RDX, with a sheath spun from filaments of a thermo plastic material or a ductile metal such as bronze) Ad 159) J.F. Kenney, USP 3293091(1966) CA 67, 7089(1967) [Primary expl mixts contg 46% of complex clathrate inclusion salts (as shown by X-ray diffraction data) of basic lead picrate, such as Pb(C5H2N3O7)2-Pb(OH)2-Pb(N03)2.-Pb(OAc)2, 50% Ba nitrate 4% Tetracene]... 

To a large bottle are added 116.5 gm (1.0 mole) of 3-chloro-l-hexyne, 20.0 gm (0.20 mole) of cuprous chloride, 16.0 gm (0.30 mole) of ammonium chloride, 10 ml of concentrated hydrochloric acid, 50 ml of water, and 0.6 gm of copper bronze. The bottle is sealed and shaken at room temperature for 14 days. The organic layer is separated, dried over potassium carbonate, and fractionally distilled through a glass-helix-packed column to afford 61.0 gm (52%) of nearly pure l-chloro-l,2-hexadiene, b.p. 54°-57°C (50 mm), p5 1.4567-1.4680, 9.3 gm (8%) of 3-chloro-l-hexyne, and some polymeric material. Shorter periods of reaction give lower yields. The product is purified as described for bromopropadiene. 

Method 3-4 is an improvement over the method of making bromopropadiene by shaking 3-bromopropyne for 6 days with cuprous bromide, concentrated hydrochloric acid, ammonium bromide, and copper bronze to afford a 28 % yield of bromopropadiene. 

Amatol, developed by the British during the first World War, is made by mixing granulated ammonium nitrate with melted trinitrotoluene, and pouring or extruding the mixture into the shells where it solidifies. The booster cavity is afterwards drilled out from the casting. The explosive can be cut with a hand saw. It is insensitive to friction and is less sensitive to initiation and more sensitive to impact than trinitrotoluene. It is hygroscopic, and in the presence of moisture attacks copper, brass, and bronze. 

Stannic sulphide, SnS2, is the higher sulphide of tin, and can be prepared by direct combination of the metal or, still better, of the lower sulphide, SnS, with sulphur. Under ordinary conditions these two substances will not react at a temperature below that which will decompose stannic sulphide. If, however, they are mixed with ammonium chloride the presence of this substance makes possible the combination at a lower temperature. The stannic sulphide formed in this way appears as soft, glistening, yellow crystals. It is used as a bronzing powder, and is known under the name of mosaic gold. In physical properties it is very different from the stannic sulphide which can be precipitated by hydrogen sulphide from a solution of stannic chloride. 

Aluminum powder ( aluminum bronze ) P. 13 Aluminum turnings P. 25, 26 Ammonium chloride P. 43 Ammonium sulphate P. 3, 73 Antimony sulphide (stibnite) P. 56,... 

Black powder corrodes copper, bronze and iron in the presence of moisture. V/hen this powder comes in contact with ammonium perchlorate, it creates ammoniu nitrate and becomes wet, because the ammonium nitrate absorbs moisture extraordinarily. 

When potassium nitrate and potassium chloroplatinate were used in the fusion, no bronze was formed.The only species detected by X-ray diffraction were platinum metal and a Pt02. A report that the use of ammonium chloroplatinate in the fusion gave a better catalyst than when chloroplatininic acid was used might also have been the result of an inhibition of bronze formation by the ammonium salt. ... 

All of these complexes, including those with the lanthanide cations, are prepared directly from W04 and the appropriate An" (Ln ), and have only a narrow pH-range of stability (ca5.5-6.5) in aqueous solution. However in the solid state the ammonium salt of [Th(W50is)2] yields the cubic tungsten bronze ThxWOs (x 0.1) when heated in an inert atmosphere to 725°C. It has been proposed that bronzes prepared in such fashion from appropriate POM salts could be used as inert waste forms for actinides and radioactive lanthanides [40]. 

Ammonium Sulphate.—Gas-producer plants will furnish weak liquors with about 30 per cent sulphate, and these liquors are concentrated in a vertical-tube evaporatoi ntil the salt crystals separate and drop into the salt filter attached to the evaporator. With a steam pressure of 5 lb. and a vacuum of 27 to 28 in., the capacity is from 1 to IK gal. per square foot. Evaporator shells are made of cast iron with tubes of bronze. Erequently the whole apparatus is lead-lined and the tubes are of lead, in which case the capacity will be reduced to about 60 per cent of the above figures. 

Aluminium bronze, 118. Ammonia, recovery of, 63. Ammonium nitrate, 1. 

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