Hydroquinone is a white crystalline substance when pure and is highly soluble in water. Hydroquinone is combustible when preheated. It is a reducing agent that is reversibly oxidized to semiquinone and quinone.

White spirit is a mixture of saturated aliphatic and alicyclic C7 to C2 hydrocarbons with a maximum content of 25% of C7 to C 12 alkyl aromatic hydrocarbons.

Thallium is a soft and malleable heavy metal with a bluish-white colour. Its relative molecular mass is 204.38. Its most important compound is the colourless, odourless and tasteless thallium(l) sulfate, previously used ...