Drano is a household drainage cleaner made from either sodium hypochlorate (bleach), sodium hydroxide (lye), sodium chloride, sodium nitrate and aluminum.

What are the ingredients in Drano?

What appears on the label: INGREDIENTS: Bleach, water, cleaning agent, caustic, corrosion inhibitor, sodium hydroxide, sodium hypochlorite, sodium silicate.

Does drain cleaner contain bleach?

Liquid formulations of corrosive alkaline drain cleaners can contain sodium hypochlorite (bleach) and lye (sodium hydroxide or potassium hydroxide) in concentrations up to 50 percent. Other corrosive mixtures come as two-part cleaners that are mixed as they are poured in the drain opening.