Strontium nitrate is supplied for laboratory research pyrotechnics and industrial applications. Strontium nitrate is an inorganic compound with the chemical formula Sr(NO₃)₂. It is primarily recognized as a powerful oxidiser and a source of vibrant red flames in pyrotechnics.
Key Characteristics
Appearance: A white crystalline solid.
Properties: Highly soluble in water (~660 g/L at 20°C) and acts as a strong oxidising agent.
Flame Colour: When burned, it emits a characteristic brilliant red light, which is its most famous application.
Molar Mass: 211.63 g/mol (anhydrous).
Melting Point: Approximately 570°C, at which point it also begins to decompose.
Common Applications
Pyrotechnics & Signals: Used extensively in fireworks, road flares, and marine signals to produce deep red colours.
Skincare: It is used as an anti-irritant in topical products, particularly to reduce stinging sensations caused by chemicals like glycolic acid.
Manufacturing: Utilised in the production of specialty glass and ceramics to improve durability and clarity.
Biological Research: Because strontium ions (
) mimic calcium ions (
), it is used in electrophysiology to study neurotransmitter release.
Safety & Handling
Strontium nitrate is classified as a strong oxidiser (Hazard Class 5.1). While it is not combustible on its own, it can significantly accelerate the burning of other materials and may explode if exposed to prolonged heat or fire.
Storage: Keep in a cool, dry place away from acids, metal powders, and organic/combustible materials.
Toxicity: It is harmful if swallowed and can cause irritation to the skin, eyes, and respiratory tract.
