Hydrochloric acid is an aqueous solution of hydrochloric acid (HCl), a colorless to yellowish chemical compound that is highly corrosive and acidic. The concentration of 30/33% indicates the mass concentration of HCl in the solution. It is one of the most commonly used acid solutions in various industrial, chemical, and cleaning applications.

In diluted solution, potassium permanganate is used for water treatment. It also serves as a disinfectant at a concentration of 0.5 grams per liter, commonly employed for washing vegetables in tropical countries.

Caustic soda, or sodium hydroxide, is a strong base. Reactive with a wide range of organic and inorganic chemicals, it is soluble in water.

Cresol refers to three methylated isomers of phenol, with the general chemical formula C7H8O. These isomers include ortho-cresol (o-cresol), meta-cresol (m-cresol), and para-cresol (p-cresol). Each of these isomers has specific properties and uses.

Formalin, also known as formaldehyde, is an aqueous solution of formaldehyde, usually expressed as a percentage of formaldehyde by volume.

Bleach is the generic name for any chemical product used on an industrial and domestic scale to remove the color from fabric or fiber.