Nonpolar solvents such as hexane and carbon tetrachloride provide a higher solubility. WCl is soluble in carbon disulfide, carbon tetrachloride, and phosphorus oxychloride. Examples include arsenic, carbon tetrachloride, and vinyl chloride. It is soluble in nonpolar solvents silicon tetrachloride and carbon tetrachloride. Side products include carbon tetrachloride, hydrogen chloride, and hexachlorobutadiene. Miles V. Sullivan's 1945 patent suggested ether, alcohol, carbon tetrachloride, or chloroform. It is prepared by treating titanium tetrachloride with isopropanol. Hafnium metallocene compounds can be prepared from hafnium tetrachloride and various cyclopentadiene-type ligand species. Fires should be fought with foam, carbon dioxide, dry chemical or carbon tetrachloride. Examples include controlled hydrolysis of titanium tetrachloride (TiCl) or titanium ethoxide. The trichlorosilane is then converted to a mixture of silane and silicon tetrachloride. Both sodium and chlorine are recycled to produce and process more titanium tetrachloride. Methane gas has the same structure, making carbon tetrachloride a halomethane. Silicon tetrachloride or tetrachlorosilane is the inorganic compound with the formula SiCl. The industrial toxin carbon tetrachloride and the wild mushroom Amanita phalloides are other known hepatotoxins.