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Barium Carbonate (Precipitated Barium Carbonate) CAS 513-77-9

Barium carbonate is a core raw material in the barium salt industry, renowned for its high purity, high whiteness, and chemical stability. It is widely used in ceramic glazes, glass manufacturing, electronic ceramics, steel carburizing, water treatment, and other barium salt production, serving as an indispensable flux and raw material in the ceramics industry.

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Product Description

In the ceramics industry, barium carbonate significantly improves the gloss and whiteness of glazes, lowers the melting temperature of glazes, and enhances the hardness and wear resistance of glazes. In the electronics industry, high-purity barium carbonate is a key raw material for manufacturing electronic components such as PTC thermistors, ceramic capacitors, and magnetic materials. In the glass industry, it improves the refractive index and chemical stability of glass. Products are available in multiple grades, including industrial, electronic (high-purity), ceramic, glass, nano, and pharmaceutical grades, to meet the diverse needs of customers in different industries. Products strictly adhere to national standards such as HG/T 2775-2019, and small-batch trial orders and customized packaging are supported. Leveraging major ports such as Qingdao, Tianjin, and Shanghai, exports are efficient and hassle-free. As a Class 6.1 toxic substance (UN1564), export requires compliance documents such as a dangerous goods packaging certificate and MSDS.

Product Information

ItemDescription
Product NameBarium Carbonate (Precipitated Barium Carbonate)
CAS No.513-77-9
EINECS No.208-167-3
Molecular FormulaBaCO₃
Molecular Weight197.34
AppearanceWhite fine powder or granules (odorless, tasteless)
Main TypesIndustrial Grade: Purity ≥98.0%-99.0%, for ceramic glazes, glass, steel carburizing, water treatment. Largest volume grade.
Electronic Grade (High Purity Grade) : Purity ≥99.5%-99.9%, strict impurity control (Sr, Ca, Fe), for electronic ceramics, capacitors, PTC thermistors, magnetic materials.
Ceramic Grade: Purity ≥98.5%-99.0%, fine particle size, high whiteness, for high-end ceramic glazes, tiles, sanitary ware.
Glass Grade: Purity ≥98.0%-99.0%, ultra-low iron, for optical glass, CRT glass, specialty glass.
Nano Barium Carbonate: Particle size ≤100nm, high surface area, high activity, for high-end electronic ceramics, catalysts, functional materials.
Pharmaceutical Grade: Purity ≥99.0%-99.5%, strict heavy metal control, for pharmaceutical intermediates, X-ray contrast media raw materials.
Key Physical & Chemical PropertiesAppearance: White fine powder or granules, odorless, tasteless; Density: 4.43 g/cm³; Melting Point: 811-816℃ (decomposes); Boiling Point: 1360℃ (decomposes); Solubility: insoluble in water (~0.002 g/100mL at 20℃), insoluble in ethanol, soluble in acids (with CO₂ release), soluble in ammonium chloride solution; Thermal Decomposition: decomposes to BaO and CO₂ at 811-816℃.
Industrial Grade Specifications (HG/T 2775-2019)BaCO₃ Content: ≥99.0%; Moisture: ≤0.3%; Insoluble in HCl: ≤0.20%; Total Sulfur (as SO₄): ≤0.20%; Chlorides (Cl): ≤0.01%; Iron (Fe): ≤0.005%; Strontium (Sr): ≤0.50%; Calcium (Ca): ≤0.15%; Residue (45μm sieve): ≤0.15%.
Electronic Grade SpecificationsBaCO₃ Content: ≥99.5%-99.9%; Moisture: ≤0.2%; Strontium (Sr): ≤0.10%; Calcium (Ca): ≤0.02%; Iron (Fe): ≤0.001%; Chlorides (Cl): ≤0.005%; Insoluble in HCl: ≤0.05%.
FeaturesHigh whiteness, high purity; chemically stable, insoluble in water; decomposes to BaO at high temperature; base raw material for barium salts; adjustable particle size; toxic (soluble barium salts are poisonous); safety protection required.
Main ApplicationsCeramics Industry (largest application, ~40%-50% of consumption) : Flux and raw material for glazes and bodies; improves gloss and whiteness, lowers melting point, enhances hardness and abrasion resistance; used in tiles, sanitary ware, tableware, art ceramics.
Glass Industry: Flux and raw material for optical glass, CRT glass, specialty glass, glass fiber; improves refractive index, gloss, chemical stability, and mechanical strength; acts as clarifying agent to remove bubbles.
Electronics Industry (high-value application) : Raw material for electronic ceramics (PTC/NTC thermistors, piezoelectric ceramics, ceramic capacitors, MLCC); base material for barium titanate and PZT; additive for magnetic materials (ferrite).
Steel Carburizing: Surface hardening agent for steel; improves surface hardness and wear resistance.
Water Treatment: Removes sulfate ions (SO₄²⁻) from drinking water and industrial water; removes heavy metals from wastewater.
Other Barium Salts: Base raw material for barium chloride, barium nitrate, barium hydroxide, barium titanate, barium sulfate.
Others: Rubber and plastic fillers, coating auxiliaries, ink auxiliaries, fireworks (green flame), PTC thermistors, piezoelectric ceramics, optical glass, CRT glass, pharmaceutical intermediates (X-ray contrast media), rubber auxiliaries.
Packaging25kg woven bags (PE liner, paper-plastic composite, kraft paper bags); 500kg or 1000kg jumbo bags; custom packaging available.
Storage ConditionsStore in cool, dry, well-ventilated area; keep sealed to prevent moisture; avoid mixing with acids, strong oxidizers, food and feed.
Shipping RequirementsDangerous Goods Class 6.1 (Toxic substances), UN 1564, Packing Group III. Must be shipped according to dangerous goods regulations; provide Dangerous Goods Packaging Certificate and MSDS; protect from moisture and rain; do not mix with acids, oxidizers, or food products.
Quality StandardsChina: HG/T 2775-2019; Export reference: ISO 9056:1992.


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Q4: How do you guarantee product quality?
A: We implement a strict supplier qualification and periodic audit system. A Certificate of Analysis (COA)—issued by the original manufacturer—is provided with every shipment. We also welcome pre-shipment inspections conducted by internationally recognized third-party agencies such as SGS, BV, or ITS. Should the test results fail to meet the standards specified in the contract, you have the right to reject the goods or request a replacement.

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