Smoke-producing pyrotechnics

Engin a fumee chaude de Berger (Fr), A smoke-producing pyrotechnic device invented by Betger and used during WWI,... 

Cd and some Cd salts were patented by DeMent for use in smoke- producing pyrotechnic compns (Ref 6)... 

HCI. It is used in a variety of ways in industry, and in smoke producing pyrotechnic compns (Ref 5)... 

An industrial method is briefly described in Ref 2, p945 Chromic oxide has been used in metallurgy, in manuf of soluble Cr salts, as a green pigment in manuf of glasses and ceramics and as a catalyst. C O -CuO catalysts are widely used, such as in manuf of methanol and in cyclizations of hydrocarbons (Refs 2 5). Its use in smoke -producing pyrotechnic compns is discussed under Chromium Compounds for Smoke Production, Chromic oxide, as well as Cr hydroxide, are parent compds of Chromites Refs l)Mellor 1 1 (1931), 176-85 2)Kirk Othmer 3 (1949), 944-5 3)Ullmann 5... 

DeMent (Ref) proposed to use the following Co ion contg mixts as smoke-producing pyrotechnic compns a)Co stearate 2.0, K chlorate 10.0 to 12.0 Amm acid fluoride 4.0 to 8.0 parts. This compn, when ignited by a flame, produced a heavy, voluminous fine white smoke b)When using monochloroacetic acid in previous mixt, instead of fluoride, the color of smoke produced was blue-white c)Equal parts of Co chloride, K bromate, K bromide, sulfur, K chlorate K acid sulfate burned with the emission of a green to green-brown smoke d)Equal parts of Co nitrate, K bromate, K bromide, sulfur, K chlorate K acid sulfate burned with the emission of grn to gm-bm smoke e)A mixt of Co chloride 1.0, K chlorate 2.0,K iodate 1.0, K iodide 1.0 sulfur 1.5 parts burned with evolution of a heavy voluminous deep violet smoke Ref J.DeMent, USP 2995526 (1961), p8... 

Columbium Compounds for Smoke Producing Pyrotechnic Items were proposed by J. DeMent,... 

Copper Compounds for Smoke Production. DeMent (Ref) proposed to use several copper-ion contg mixts as smoke-producing pyrotechnic compns. These mixts are listed under Copper Chloride in this section on Chlorides and under Copper - 64 and Copper - 67, Copper Acetate, Copper Oxide Copper Stearate in this section on COPPER AND ITS SALTS... 

Cu(Ci8H3502)2> mw 630.50, pale bulu-grn pdr (from xylene), mp 125°. Can be prepd by double decompn of an alkali stearate and cupric acetate in aq-alc soln (Refs 1, 2, 3 4). DeMent (Ref 5) patented its use in a smoke producing pyrotechnic compn consisting of Cu stearate 5,0, K chlorate "halogen donor , such as fluoride, chloride, etc. 

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