When was pure metallic zinc first discovered?
German chemist Andreas Sigismund Marggraf discovered pure metallic zinc in 1746. Swedish chemist Anton von Swab had distilled zinc from calamine four years previously in 1742.
Common questions about Zinc
Short answers, pulled from the story.
What is the melting point of zinc?
Zinc has a relatively low melting point of 419.53 degrees Celsius. This is the lowest melting point of all d-block metals aside from mercury and cadmium.
How much zinc is found in Earth's crust?
Zinc stands as the 24th most abundant element in Earth's crust. It has an average concentration of 70 grams per ton, or 70 parts per million.
When did the US Mint begin minting pennies coated in copper but containing primarily zinc?
The US Mint began minting pennies coated in copper but containing primarily zinc in 1982. In 1994, 13.6 billion pennies were produced in the United States.
What date did the FDA order removal of zinc-based intranasal cold products from store shelves?
On the 16th of June 2009, the FDA ordered removal of zinc-based intranasal cold products from store shelves. The FDA stated that the loss of smell can be life-threatening because people with impaired smell cannot detect leaking gas or smoke.