Uses of Strontium (Sr) in Everyday Life

Strontium at work around you

Every use below comes straight from the full Strontium study page, where each point also carries the chemistry behind it and an exam-style question. Skim the list here; open the full page when revision time comes.

Uses of Strontium in the study notes

• The red stars of fireworks — strontium nitrate and strontium carbonate are the colour-plus-oxygen duo behind every crimson burst, from Dhaka wedding parties to cricket-victory nights.
• Strontium ferrite ($\mathrm{SrFe_{12}O_{19}}$) permanent magnets — cheap, rust-proof magnets inside loudspeakers, fridge magnets and the small motors of fans and toys.
• Strontium chloride in “sensitive-teeth” toothpastes — it plugs the exposed micro-tubules in tooth dentine that make cold water sting.
• Strontium aluminate ($\mathrm{SrAl_{2}O_{4}}$) glow-in-the-dark pigment — the green afterglow on emergency exit signs, watch dials and children’s ceiling stars.

Where you meet it

• The next red burst at a wedding, Eid fair or cricket-celebration fireworks show is almost certainly strontium salts burning above 2,000 °C.
• The luminous stars and stickers on a bedroom ceiling keep glowing minutes after the lights go off — strontium aluminate releasing stored daylight.
• Some sensitivity-relief toothpaste tubes on a pharmacy shelf openly list strontium chloride hexahydrate among their ingredients.