Strontium chloride hexahydrate serves as a key inorganic salt across multiple industries. In pyrotechnics, it is the primary red-colorant for fireworks, flares, and signal lights, delivering vivid crimson flames via strontium emission. In pharmaceuticals and oral care, it acts as an active ingredient in desensitizing toothpaste, blocking dentin tubules to reduce tooth hypersensitivity; it also functions as a precursor for strontium-based bone supplements and radiopharmaceuticals for bone imaging. In materials science, it is an additive for LCD glass, ceramic glazes, and magnetic materials, enhancing hardness, luster, and magnetic properties. In chemical synthesis, it is a raw material for producing strontium carbonate, strontium nitrate, and other strontium salts. In laboratory analysis, it is used as a reagent for sulfate ion precipitation and strontium standard solution preparation. Its high solubility and stability make it indispensable in industrial manufacturing and scientific research.

Strontium chloride hexahydrate is a low-toxicity but irritant chemical requiring careful handling. Skin contact may cause dryness, redness, and mild irritation; prolonged exposure may trigger allergic dermatitis. Eye contact leads to stinging, tearing, and conjunctival inflammation; direct exposure may cause corneal damage. Inhalation of dust irritates the respiratory tract, causing cough, sore throat, and shortness of breath. Ingestion may result in nausea, vomiting, diarrhea, and abdominal pain; large doses may affect calcium metabolism and cause hypocalcemia. It is hygroscopic and deliquescent, so store in sealed, dry containers away from moisture and oxidants. Wear nitrile gloves, safety goggles, and dust masks during operation; use in ventilated areas. In case of contact, rinse skin/eyes with plenty of water for 15 minutes; if ingested, drink warm water and seek medical help. Avoid environmental release; dispose of waste per hazardous waste regulations.