Hydroquinone, also known as 1,4-benzenediol, is a colorless crystalline solid when pure, with the chemical formula C6H4(OH)2. It is an aromatic diol (a para-isomer of catechol).
Catechol, also known as pyrocatechol or 1,2-dihydroxybenzene, is an organic compound with the molecular formula C6H4(OH)2. It is a crystalline substance with a distinctive phenolic fragrance.
Methyl ethyl ketone peroxide (mekp) is a liquid chemical compound from the family of ketone peroxides that it is used to initiate the polymerization of unsaturated polyester and vinylester resins at different curing temperatures.
Dichloroacetic acid is a colorless and highly corrosive liquid it emits acidic vapors that can cause irritation to the mucous membranes. It exhibits complete miscibility with water and can dissolve readily in various organic solvents such as alcohols, ketones, hydrocarbons, and chlorinated hydrocarbons.
Aniline, also known as aminobenzene, is an aromatic amine with the chemical formula C6H5NH2. It is a flammable colorless to slightly yellow liquid with a sweet, amine-like odor, and it turns brown upon exposure to air and light.
Pure chloroacetic acid is a colorless, hygroscopic, crystalline solid, which occurs in many cristalline forms. It does not occur in nature and was first discovered as a chlorination product of acetic acid by N. LEBLANC in 1841.
Calcium chloride, CaCl2, is a white, odorless, extremely water soluble salt that forms hydrates. It is found in small quantities, along with other salts, in seawater and in many mineral springs.