What Is Strontium Nitrate?
Strontium nitrate is an inorganic compound with the formula Sr(NO3)2 and CAS number 10042-76-9. It is notable for its oxygen-releasing properties when heated, making it a potential oxidizing agent that requires careful storage due to its ability to ignite reducing substances.
Uses of Strontium Nitrate
Strontium nitrate is extensively used in the manufacture of fireworks, phosphors, optical glass, flares, reagents, gunpowder, explosives, LCD/OLED glass, optical glass, ceramics, igniters, and in applications requiring a deep red flame coloration. It also finds application in inorganic chemical products, pharmaceuticals, and as a gas-generating agent in automotive airbags.
Properties of Strontium Nitrate
This white crystalline powder has a formula weight of 211.43, melts at 570°C, and boils at 645°C. Highly soluble in water (40 g/100 g at 0°C) and ammonia, it is insoluble in ethanol, acetone, and ether. The anhydrous form crystallizes in the cubic system, while the tetrahydrate in the monoclinic system.
Types of Strontium Nitrate
Available mainly for research and industrial use, strontium nitrate is sold in various quantities suitable for laboratory and industrial applications, typically stored at room temperature.
Other Information on Strontium Nitrate
1. Synthesis
It can be synthesized via the neutralization of strontium hydroxide, carbonate, or oxide with nitric acid. Concentrating the aqueous solution yields tetrahydrate strontium nitrate below 29.3°C.
2. Reactivity
Upon decomposition, it releases oxygen and nitrogen dioxide, forming strontium oxide, and is stable under normal conditions but hazardous with flammable materials.
3. Hazardousness and Regulatory Information
As an oxidizing solid, it poses risks of corrosion and irritation to skin and eyes, necessitating strict handling precautions, including the use of protective gear and avoiding contact with heat and flammable materials. It is regulated under multiple safety laws, emphasizing its hazardous nature.