The alkali metals are so called because their hydroxides are all strong alkalis when dissolved in water.

Potassium hydroxide is a strong alkali that causes skin burns.

The active agent is usually a strong alkali, although some formulations are based on ammonium thioglycolate instead.

Someone can find out how strong or weak an alkali is by adding universal indicator to it.

It is a strong alkali, and is used in the manufacture of soap, in making wood pulp for paper, etc.

It also reacts with strong alkali to form polyoxovanadates, which have a complex structure that depends on pH.

Treat pearls stained with strong soap immediately; they are permanently damaged by strong alkalis.

However, they cannot be used with strong alkalis.

The oxide zirconium (ZrO2) improves the resistance of glass to attack by strong alkalis.

Acid brick is not resistant against hydrofluoric acid or strong alkali.