Basic Information of Strontium Fluoride
- Product Name: Strontium Fluoride
- Product Synonyms: Strontium Difluoride
- Strontium Fluoride Molecular Formula: SrF₂
- Strontium Fluoride Molecular Weight: 125.617
- Strontium Fluoride Molar Mass: 125.63 g/mol
- Strontium Fluoride CAS No.: 7783-48-4
- Strontium Fluoride EINECS No.: 232-000-3
- Strontium Fluoride Appearance: Cubic white crystalline powder, odorless
What is Strontium Fluoride?
- Strontium Fluoride is a compound that exists in various forms (polycrystalline powder, single crystal, thin film, etc.).
- The vast majority of commercially available Strontium Fluoride raw materials are polycrystalline powders, that is, white crystalline powders. Polycrystalline powders can be further processed into single-crystal Strontium Fluoride, which has the highest purity and lowest defect density, resulting in optimal performance.
- Highassay is a Strontium Fluoride raw material supplier from China. We offer various grades of Strontium Fluoride raw materials, with our specialty being optical-grade Strontium F MSDS and TDS are provided with our Strontium Fluoride products.
- For inquiries about Strontium Fluoride raw materials, please contact us.

Highassay’s Strontium Fluoride Raw Material Purity
Different purities of Strontium Fluoride raw materials have different applications. Regardless of your field or industry, we can provide the Strontium Fluoride raw material purity you need. Please contact us for a quote.
- Strontium Fluoride powder with a purity of 99% is mainly used in general industrial fields, such as chemical raw materials, fluxes, and daily chemical products.
- Strontium Fluoride raw material with a purity of 99.9% (3N) is mostly used as an auxiliary material in the production of ceramics and electronic components.
- Strontium Fluoride powder with a purity of 99.99% (4N) is mostly used as a main material for optical coatings.
- StrontiumFluoride raw material with a purity of 99.995% (4N5) is mainly used in high-precision optical coatings, laser crystal matrix materials, or cutting-edge scientific research fields.
Strontium Fluoride Raw Material Specifications and Packaging
Common particle size of Strontium Fluoride: 3-5 µm (micron-sized powder)
Strontium Fluoride Packaging
- Large-scale industrial Strontium Fluoride: 25 kg woven plastic bags, composite bags, or cardboard drums (customizable to your requirements)
- Small-scale research Strontium Fluoride: 5 g – 2 kg bottles
- High-purity optical-grade Strontium Fluoride: 10 g, 20 g, 100 g, etc. aluminum foil bags
Regardless of the packaging you purchase, please ensure it is sealed and moisture-proof. If you have specific usage requirements, please click the “Contact Us” button below. We will further assist you in confirming the most suitable packaging specifications to prevent waste.

Applications of Strontium Fluoride
Highassay offers a variety of Strontium Fluoride raw materials, including optical grade, industrial grade, pharmaceutical grade, and consumer grade. If you have any needs, please click to inquire, and we will provide you with a quote as soon as possible.

- If you are a manufacturer of optical glass/laser crystals, an optical coating company, or a producer of optoelectronic components, you will definitely need optical-grade Strontium Fluoride raw materials. Please contact us immediately; we will provide you with the best Strontium Fluoride raw materials.
- Our optical-grade Strontium Fluoride powder raw materials achieve a purity of 4N. Impurity control and optical transmittance meet optical-grade standards. We can also customize Strontium Fluoride specifications according to your requirements. Please feel free to purchase.
- Optical-grade Strontium Fluoride can be used to manufacture optical glass (fluoride glass, fluorophosphate glass) and precision optical components (lenses and prisms, infrared window materials); laser technology and single crystal materials; optical coatings (antireflective coatings) and thin film technology (optical coating materials); vacuum ultraviolet and special optical systems (hot-pressed hoods).

- If you are a flux-cored wire manufacturer, a specialty alloy/metal smelting company, or a ceramic glaze manufacturer, you are welcome to purchase Highassay’s industrial grade Strontium Fluoride raw materials.
- Our industrial grade Strontium Fluoride powder offers stable production volume and batch quality, meeting your large-volume, periodic procurement needs. Our Strontium Fluoride prices are highly competitive. Please purchase with confidence.
- Industrial grade Strontium Fluoride can be used in metallurgy and welding (flux additives, metal refining agents); ceramics and glass industries (ceramic modifiers, glass additives); electronics and basic industries (preparation of other strontium compounds, rubber/plastic additives); and other emerging industries.

Pharmaceutical/daily-use grade Strontium Fluoride not only requires extremely high purity but also adheres to stringent standards for biosafety, especially regarding the content of toxic impurities such as heavy metals.
- Daily-use grade Strontium Fluoride: Strontium Fluoride can be used as an additive in functional toothpaste.It helps prevent tooth decay and relieve tooth sensitivity.
- Pharmaceutical grade Strontium Fluoride: A potential pharmaceutical ingredient, used as a fluoride ion source in research on other fluoride-containing drugs, and also for the development of drugs related to bone health.
Single-crystal Strontium Fluoride is prepared through a special crystal growth process and is an advanced product of Strontium Fluoride.
Strontium Fluoride single crystal is a high-quality optical crystal material, exhibiting excellent performance in key indicators such as optical transmittance and laser damage threshold. It is an ideal material for high-end laser crystals, optical windows, and other fields.
The core requirements for optical-grade Strontium Fluoride raw materials are: extremely high purity and extremely strict impurity control.
Impurity requirements for optical-grade Strontium Fluoride: for example, Fe≤5ppm, Cu≤5ppm, Cr≤5ppm, Ti≤5ppm, 50<Ca<100ppm, Ba≤200ppm, Cl≤100ppm, sulfate≤100ppm, heavy metals≤5ppm, and total metal impurities≤200ppm.
Strontium Fluoride is a typical ionic compound, which determines its physical properties and industrial applications. This ionic nature gives Strontium Fluoride its high melting point and high stability. For example, Strontium Fluoride can be used as a material in the production of flux-cored welding wire, a highly efficient and advanced welding material.
The functions of Strontium Fluoride toothpaste: prevent tooth decay and relieve tooth sensitivity.
Strontium Fluoride can be added as a functional ingredient to certain oral care products.
While Strontium Fluoride toothpaste is beneficial to oral health, it should not be used excessively, especially by children to prevent swallowing, and caution should be exercised regarding potential adverse reactions.
The evaporation conditions for Strontium Fluoride in vacuum coating mainly depend on its high melting point (approximately 1473℃) and high boiling point (approximately 2489℃). In vacuum coating processes, thermal evaporation or electron beam evaporation is typically used.
Physicochemical Properties of Strontium Fluoride
- Strontium Fluoride Density: 4.24 g/cm³ (25℃)
- Strontium Fluoride Melting Point: 1473℃ (Excellent stability at high temperatures)
- Strontium Fluoride Boiling Point: 2489℃ (Suitable for high vacuum coating evaporation)
- Strontium Fluoride Hardness: Knoop 154 (100) & 140 (110)
- Strontium Fluoride Coefficient of Thermal Expansion: 18.4 x 10⁻⁶ /°C (293K)
- Strontium Fluoride Thermal Conductivity: 8.3 W/m/K (293K)
- Strontium Fluoride Specific Heat Capacity: 543 J Kg⁻¹ K⁻¹
- Strontium Fluoride Dielectric Constant: 7.69 at 2 MHz
- Strontium Fluoride Transmission Range: Vacuum ultraviolet (150 nm) to mid-infrared (11 µm (This characteristic allows it to cover a broad wavelength range from deep ultraviolet and visible to mid-infrared)
- Strontium Fluoride Refractive Index: 1.439 at 0.58 µm; 1.439 at 0.55 µm (The low refractive index makes it ideal as an antireflection coating material)
- Strontium Fluoride Reflection Loss: Approximately 6.3% double-sided reflection loss at 0.55 µm
- Strontium Fluoride Temperature Coefficient of Refractive Index (dn/dT): -12 x 10⁻⁶ /°C
- Strontium Fluoride Absorption Coefficient: < 1 x 10⁻³ cm⁻¹ at 5 µm (Extremely low absorption of infrared light)
- Strontium Fluoride Solubility: Slightly soluble in water, soluble in hydrochloric acid, insoluble in hydrofluoric acid, ethanol, and acetone
- Strontium Fluoride Stability: Stable in air or heated to 1000° Above 1000°C, it transforms into strontium oxide and decomposes in strong acids.
- Strontium Fluoride Storage: Store in a tightly closed container in a cool, dry place.
- Strontium Fluoride Toxicity: Possesses some toxicity to humans. Contact, ingestion, or inhalation can cause harm. Please use protective equipment when handling or using it.
- Strontium Fluoride Applications: Primarily used in optical glass manufacturing (covering the ultraviolet to long-wave infrared transparent range), laser single-crystal materials, pharmaceutical raw materials, and additives in daily chemical products (such as toothpaste anti-caries ingredients).





