nbk2000
March 20th, 2007, 06:11 AM
vanadium oxytrichloride is a smoke producing lemon-yellow liquid, similiar to Titanium Tetrachloride. but it forms an intense orange smoke, unlike the white smoke formed by TiCl4.
Now, since vanadium oxides are available from ceramic suppliers at not-too-outrageous prices, the problem becomes production.
Enter US Patent 1923094, which details it's production using the vanadium oxide and sulfur dichloride, easily produced from sulfur and chlorine. The SCl2 (and excess Cl2) are passed over heated vanadium, forming VOCl3, the fuming orange liquid o' death that is desired.
See, nothing screams POISON GAS! like an eye-stinging cloud of intense orange fumes/smoke. ;)
US2175790 describes how to make pastes or dry powders from VOCl3 or TiCl4, using sulphuryl chlorides, to control smoke production rates.
BTW, the '094 patent also mentions production of TiCl4 by heating carbon tetrachloride to 50°C, with suspended titanium oxide, and saturating with chlorine, collecting the resulting distillate and fractionally distilling to seperate the carbona from the TiCl4.
Now, since vanadium oxides are available from ceramic suppliers at not-too-outrageous prices, the problem becomes production.
Enter US Patent 1923094, which details it's production using the vanadium oxide and sulfur dichloride, easily produced from sulfur and chlorine. The SCl2 (and excess Cl2) are passed over heated vanadium, forming VOCl3, the fuming orange liquid o' death that is desired.
See, nothing screams POISON GAS! like an eye-stinging cloud of intense orange fumes/smoke. ;)
US2175790 describes how to make pastes or dry powders from VOCl3 or TiCl4, using sulphuryl chlorides, to control smoke production rates.
BTW, the '094 patent also mentions production of TiCl4 by heating carbon tetrachloride to 50°C, with suspended titanium oxide, and saturating with chlorine, collecting the resulting distillate and fractionally distilling to seperate the carbona from the TiCl4.