Advertisement

Zinc Hydroxide

Last updated: July 19, 2024

What Does Zinc Hydroxide Mean?

Zinc hydroxide is an inorganic chemical compound with the formula Zn(OH)2. It is amphoteric in nature and can dissolve in either a strong base or an acid solution. It is often used as a galvanic substance to prevent corrosion of metal substrates.

Advertisement

Corrosionpedia Explains Zinc Hydroxide

Zinc hydroxide dissolves in an ammonia solution to form a water-soluble amine. However, the most widespread use of zinc hydroxide is due to its ability to galvanically protect steel when used as a sacrificial substance.

Even when steel is exposed to external corrosion facilitating elements such as moisture and chemicals, the steel is cathodically protected by the sacrificial corrosion of a zinc-bearing coating such as zinc hydroxide. This occurs because zinc is more electronegative (hence, reactive) than steel in the galvanic series.

Advertisement

Share This Term

  • Facebook
  • LinkedIn
  • Twitter

Related Reading

Trending Articles

Go back to top