1,3-Propanediol is a clear, colorless, odorless liquid that is miscible with water, alcohols, ethers, and formamide. It is sparingly soluble in benzene and chloroform.

Butanone also known as methyl ethyl ketone, MEK, is an aliphatic ketone and, next to acetone, the most important commercially produced ketone. It is a is a colorless, low-viscosity, flammable liquid with a characteristic ketone-like odor similar to that of acetone.

4-Methyl-2-pentanone is a colorless liquid with a less pronounced ketone-like odor.

3-Methyl-2-butanone is a colorless liquid with a characteristic ketone odor.

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.

Propylene glycol is a viscous, colorless liquid that is nearly odorless but has a faintly sweet taste . It is a diol with the chemical formula C3H8O2.

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.

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.