Archived Content

Information identified as archived on the Web is for reference, research or recordkeeping purposes. It has not been altered or updated after the date of archiving. Web pages that are archived on the Web are not subject to the Government of Canada Web Standards. As per the Communications Policy of the Government of Canada, you can request alternate formats by contacting us.

Bismuth

Brittle bismuth is a white metal with a pink tinge. During ancient times, this heavy metal was often confused with lead and tin. However, bismuth is the least toxic of the heavy metals. It has the highest electrical resistance of all metallic elements and the lowest thermal conductivity of the metals with the exception of mercury.

Alloys of bismuth with other metals such as lead, tin, iron or cadmium have very low melting points. These alloys are ideal for use in automatic fire sprinkler systems, fire detection systems and electrical fuses.

Humans are also major consumers of bismuth, both externally and internally. The compound bismuth oxychloride is a popular ingredient in cosmetics as it provides the pearly effect in lipsticks and eye shadows.

For decades, bismuth has been highly valued in medicine. Some of its most distinguishing properties are its antidiarrheal, antibacterial, and antacid effects. Bismuth is used in commercial products to treat stomach upsets, and today, it is taken with antibiotics to treat some stomach ulcers. It is also found in certain haemorrhoid creams and ointments.