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    • Strontium Carbonate CAS 1633-05-2

    Strontium Carbonate CAS 1633-05-2

    Strontium Carbonate (CAS 1633-05-2) is a high-purity inorganic compound employed as a key precursor in the production of magnetic ferrite components and PTC thermistors. Chemically designated as Carbonic acid strontium salt, this fine white powder functions to modify magnetic properties and stabilize glass formulations in display substrates. As a refined Strontium(II) carbonate material, it ensures precise stoichiometry and reactivity for sintering processes in electronic component manufacturing. We ensure bulk supply capabilities for this product, providing access to competitive factory pricing and customized specifications to meet specific particle size requirements. Full technical documentation, including MSDS, TDS, COA, is available to support compliance and quality assurance.

    • CAS: 1633-05-2
    • Synonyms: Carbonic acid strontium salt, Strontium(II) carbonate, Strontianite, Strontium salt of carbonic acid
    • Einecs: 216-643-7
    • Molecular Formula: SrCO3
    • Grade: Electronic Grade, Magnetic Grade, Industrial Grade
    • Package: 25kg/bag (multi-layer paper or PP/PE), 500kg or 1000kg jumbo bags.
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    Product Description

    Strontium Carbonate is an odorless, tasteless, white fine powder. Our Electronic Grade is produced via a specialized carbonization process that achieves a purity of ≥99.0%≥99.0%. Unlike standard industrial grades, the electronic grade is characterized by its strict control over alkali metals and heavy metal impurities.

    In the electronics industry, it serves as a critical precursor for manufacturing PTC thermistors, multilayer ceramic capacitors (MLCC), and strontium ferrites. Its ability to absorb X-rays also makes it a vital component in specialty glass formulations. We provide various particle size distributions (D50) to meet the specific sintering requirements of different high-tech applications.

    1 Physicochemical Properties
    2 Applications
    3 Storage Conditions
    4 Safety Precautions

    Physicochemical Properties

    PropertyElectronic Grade (Standard)High Purity Grade
    SrCO3 Content≥ 99.0%≥ 99.5%
    Barium (Ba)≤ 0.3%≤ 0.1%
    Calcium (Ca)≤ 0.1%≤ 0.05%
    Iron (Fe)≤ 0.001%≤ 0.0005%
    Chloride (Cl)≤ 0.01%≤ 0.005%
    Total Alkali (as Na)≤ 0.1%≤ 0.05%
    Moisture (H2OH2​O)≤ 0.3%≤ 0.2%
    Insoluble in HCl≤ 0.05%≤ 0.02%
    Bulk Density0.4 – 0.8 g/cm³0.4 – 0.8 g/cm³
    AppearanceWhite PowderWhite Powder

    Applications

    1. Electronic Components: Used in the production of PTC thermistors, varistors, and Multilayer Ceramic Capacitors (MLCC). It is a key ingredient in strontium titanate ceramics.
    2. Magnetic Materials: Essential for manufacturing strontium hexaferrite magnets, which are used in speakers, motors, and magnetic separators due to their high coercive force.
    3. Specialty Glass: Used in the production of color television glass (X-ray shielding), optical glass, and display panels to improve refractive index and chemical durability.
    4. Pyrotechnics: Serves as a high-quality red colorant in fireworks and flares, providing a deep, vibrant crimson flame.
    5. Metallurgy: Used as a flux in aluminum and magnesium smelting to remove impurities and improve alloy grain structure.
    6. Nanomaterials: High-purity grades are used as precursors for advanced strontium-based nanomaterials and chemical reagents.

    Storage Conditions

    • Ventilation: Store in a cool, dry, and well-ventilated warehouse.
    • Moisture Protection: The product should be kept in original sealed packaging to prevent moisture absorption and caking.
    • Segregation: Keep away from strong acids to prevent the release of carbon dioxide and the formation of soluble strontium salts.
    • Handling: Palletized storage is recommended to avoid contact with damp floors.

    Safety Precautions

    • Inhalation: Avoid breathing dust. Use local exhaust ventilation or wear an approved N95/P2 dust mask during handling.
    • Eye & Skin Contact: May cause mild mechanical irritation. Wear safety goggles and protective gloves. In case of contact, rinse thoroughly with water.
    • Ingestion: Low acute toxicity, but avoid ingestion. Wash hands thoroughly after handling.
    • Environmental: While strontium carbonate is not highly toxic to the environment, prevent large-scale spills from entering water systems or drainage.

    FAQ - Technical & Supply Chain

    • Q:

      What is Strontium Carbonate CAS 1633-05-2?

      A: Strontium carbonate is an inorganic carbonate salt with the formula SrCO3. It is supplied as a white powder or granular solid and used in strontium ferrite magnets, electronic ceramics, specialty glass, glazes, pyrotechnics and metallurgical processing.
    • Q:

      Why is Strontium Carbonate used in permanent magnets?

      A: It is a key raw material for strontium ferrite permanent magnets. Strontium ferrite provides useful magnetic performance, corrosion resistance and cost efficiency in motors, speakers, sensors and other magnetic components.
    • Q:

      What electronic components use Strontium Carbonate CAS 1633-05-2?

      A: Electronic-grade strontium carbonate is used in PTC thermistors, multilayer ceramic capacitors and other ceramic dielectric materials. Its purity, particle-size distribution and controlled trace-metal levels are important for consistent sintering and electrical performance.
    • Q:

      How should I choose between electronic, magnetic and industrial grades?

      A: Electronic and magnetic grades normally require tighter control of barium, calcium, iron, alkali metals and heavy metals. Industrial grade may be acceptable for glass, glazes or general chemical use, but the grade should be selected against the purity and particle-size requirements of the process.
    • Q:

      What are the main non-electronic applications of strontium carbonate?

      A: It is used in specialty glass and glazes, red-flame pyrotechnics and signal flares, fluorescent glass, zinc electrolyte purification and production of other strontium compounds. Its strontium content also creates the characteristic red flame color in pyrotechnics.
    • Q:

      Which specifications should I check before ordering Strontium Carbonate?

      A: Confirm SrCO3 content, barium, calcium, iron, chloride, moisture, acid-insoluble matter, bulk density and D50 or particle-size distribution. High-purity electronic applications may need additional trace-metal and alkali-metal limits.

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