Acetone peroxide is soluble in toluene, chloroform, acetone, dichloromethane and methanol. The monomer is very soluble in water, ethanol, diethyl ether and acetone and toluene. Substitute aromatics such as toluene, xylene and cumene combined with limited benzene solved the problem. BTX stands for benzene, toluene, xylene. It is a yellow material that dissolves in common solvents including benzene, toluene, and dichloromethane. Xylenes are produced by the methylation of toluene and benzene. Key aromatic hydrocarbons of commercial interest are benzene, toluene, "ortho"-xylene and "para"-xylene. Humans metabolize toluene and benzoic acid which is excreted as hippuric acid. The toxic trio consists of formaldehyde, toluene and dibutyl phthalate (DBP). Benzoic acid and benzaldehyde are produced commercially by partial oxidation of toluene with oxygen. Cymene is also produced by alkylation of toluene with propylene. Fullerenes are soluble in many organic solvents, such as toluene, chlorobenzene, and 1,2,3-trichloropropane. PET becomes white when exposed to chloroform and also certain other chemicals such as toluene. Boc anhydride is also available as a 70% solution in toluene or THF. Benzoic acid is produced commercially by partial oxidation of toluene with oxygen.