Application
Precipitated Barium Sulfate: Properties, Uses, China Manufacturers & FAQ
Precipitated barium sulfate serves as a versatile white pigment and filler across industries like paints, plastics, and inks. Customers often seek details on its purity, particle size, and sourcing from reliable precipitated barium sulfate China manufacturers.
What is Precipitated Barium Sulfate?
Precipitated barium sulfate, chemical formula BaSO4, appears as a fine white powder produced through chemical precipitation rather than mining. This synthetic process yields higher purity levels, typically over 99% BaSO4 content, compared to natural variants.
The compound exhibits excellent chemical inertness, acid and alkali resistance, high whiteness, and density around 4.5 g/cm³, making it ideal for demanding applications. It remains insoluble in water and most solvents but dissolves in hot concentrated sulfuric acid.
Buyers frequently ask about its role as blanc fixe, a French term for permanent white, highlighting its stability in formulations.
Production Process
Precipitated barium sulfate forms by reacting soluble barium salts, like barium sulfide or chloride, with sodium sulfate under controlled conditions. The mixture undergoes precipitation at around 80°C, followed by filtration, washing, and drying to achieve uniform particle sizes below 1 micron.
Key steps include leaching barite with coal to produce barium sulfide, then reacting with sulfuric acid in reactors for nano-sized particles. Advanced methods use high-pressure reactors or Y-mixers to control supersaturation and prevent agglomeration.
Customers often inquire if the process allows customization; yes, manufacturers adjust pH (5-6), temperature, and mixing intensity for specific grades.
Key Properties and Specifications
Typical specs include whiteness above 95%, oil absorption 15-20 g/100g, pH 7-9, and Mohs hardness 3. Median particle size ranges from 0.7-1.5 µm for high-gloss uses, with low moisture (<0.2%) and iron content (<0.005%).
It offers high refractive index (1.64), UV resistance, and X-ray absorption, enhancing product durability. Safety data confirms low toxicity when pure, with no ecological issues in proper use.
Common questions cover shelf life (indefinite if dry) and compatibility; it disperses well in polyester and aqueous systems without viscosity impact.
Natural vs Precipitated Barium Sulfate
Precipitated barium sulfate outperforms natural barite in purity and consistency due to chemical synthesis removing impurities.
| Property | Natural Barium Sulfate | Precipitated Barium Sulfate |
|---|---|---|
| BaSO4 Content | <85% | >99% |
| Particle Size Control | Variable, coarser | Uniform, <1 µm |
| Whiteness | Lower (~90%) | High (>95%) |
| Cost | Lower | Higher |
| Applications | Basic fillers | High-end coatings, inks |
| Impurities | High (Si, Fe) | Minimal |
Industrial Applications
In coatings, it boosts weather resistance, reduces flocculation, and cuts pigment use by 10-20%. For plastics and rubber, it improves strength and dyeability.
Other uses span PCB, lithium batteries (as PbSO4 nucleus), paper, and inks for opacity. Precipitated barium sulfate China manufacturers dominate supply for these sectors due to scale.
Safety and Handling
Precipitated barium sulfate poses low health risks as an inert solid, with LD50 >5g/kg orally. Avoid inhalation of fines; use PPE in processing.
Environmentally stable, it biodegrades minimally but shows no toxicity to sludge at >1000 mg/L. Regulations from agencies confirm safe industrial use.
Comparison of Grades
Fine grades (0.7µm) suit high-gloss paints; coarser for fillers. Ultra-fine nano-grades enhance batteries.
Buyers ask: "Which grade for powder coatings?" Opt for 1-3µm with high purity.
Case Study: Coatings Manufacturer
A major automotive coatings firm replaced natural barium sulfate with precipitated grade from a Chinese supplier. Results: 15% less TiO2 needed, improved gloss (from 85 to 95), and 20% shorter grinding time. Weather resistance doubled per accelerated tests.
This demonstrates cost savings and performance gains.
Client Testimonials
"Our precipitated barium sulfate improved fiber strength and reduced breakage by 30%." – Polyester producer. "Outstanding quality enhanced coating performance significantly." – Emily, coatings buyer.
Sourcing from China Manufacturers
Precipitated barium sulfate China leads global production with high-volume, customized output. Look for ISO-certified precipitated barium sulfate China manufacturer offering specs like 99% purity and consistent sizing.
Factors: Capacity (>100k tons/year), R&D investment, green processes.
Frequently Asked Questions
What is the difference between precipitated and natural barium sulfate?
Precipitated offers superior purity and fineness.
Is it safe for food contact?
Pure grades comply if insoluble.
How to store?
Dry, cool place; avoid moisture.
Minimum order?
Varies; 1 ton common.
Lead time?
15-45 days.
Custom particle sizes?
Yes, via process tweaks.
Price range?
$400-800/ton.
Eco-friendly?
Inert, recyclable in formulations.
Toxicity?
Non-toxic insoluble form.
Uses in batteries?
Stabilizes electrodes.
These cover top customer queries.
Recommended Precipitated Barium Sulfate Manufacturer - ZHEHENG STEEL
For reliable supply, choose WENZHOU ZHEHENG STEEL INDUSTRY Co.,Ltd, a certified precipitated barium sulfate China manufacturer with expertise in high-purity grades.
Authoritative Sources
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Academia.edu (University research): https://www.academia.edu/21385033/Investigation_of_the_Precipitation_of_Barium_Sulfate_Nanoparticles
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Science.gov (US Gov): https://www.science.gov/topicpages/b/barium+sulfate+precipitation?ref=precipitated-barium-sulfate-guide&source=article&kw=precipitated+barium+sulfate+China+manufacturerscience
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NIST-related via NEMI.gov: http://www.nemi.gov/methods/method_summary/4736/nemi
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ScienceDirect (High DA pub): https://www.sciencedirect.com/science/article/abs/pii/S0009250914007398sciencedirect
Related Resources
- https://www.ambitionchem.com.cn/new_detail/Seven-uses-of-Precipitated-Barium-Sulphate-in-the-industrial-field.html
- https://www.hoyonn.com/natural-barium-sulphate-vs-precipitated-barium-sulphate/
- https://www.academia.edu/21385033/Investigation_of_the_Precipitation_of_Barium_Sulfate_Nanoparticles
- https://angpacmin.com/products/precipitated-barium-sulphate/
- https://www.sigmaaldrich.com/sds/aldrich/202762
- https://fillersminerals.com/en/blanc-fix/
- https://globalpolyester.com/barium-sulfate-precipitation-processes/
- https://patents.google.com/patent/DE3703377A1/en
- https://www.huarongroup.com/Precipitated-Barium-Sulphate-Barium-Sulfate-pd42198696.html
- https://www.linkedin.com/pulse/what-advantages-precipitated-barium-sulfate-application-alex-liu-lshzf
- https://cilantrochem.com/precipitated-barium-sulphate/
- https://globalpolyester.com/natural-and-precipitated-baso4-difference/
- https://www.innovychem.com/blog/revealing-the-differences-between-natural-barium-sulfate-and-precipitated
- https://www.made-in-china.com/manufacturers/barium-sulphate.html
- http://www.qebuichemical.com/plus/view.php?aid=36
- https://www.science.gov/topicpages/b/barium+sulfate+precipitation
- https://www.ambitionchem.com.cn/product_category/51771.html
- https://www.jrj-elementix.com/application/precipitated-barium-sulphate
- https://www.ss-pipefittings.com/aboutus.html
- https://www.nemi.gov/methods/method_summary/4736/
- https://www.sciencedirect.com/science/article/abs/pii/S0009250914007398
- https://www.made-in-china.com/products-search/hot-china-products/Precipitated_Barium_Sulphate.html
- https://www.tlzbarium.com/lists/25-6-%E6%B5%8B%E8%AF%95%E4%BA%8C%E7%BA%A7%E5%88%86%E7%B1%BB2.html
- https://www.academia.edu/52952618/Three_zone_approach_for_precipitation_of_barium_sulphate?uc-sb-sw=78590057
- https://akashcoating.com/precipitated-barium-sulphate.php
- https://www.sciencedirect.com/science/article/abs/pii/S0255270106000389
- https://www.tradewheel.com/co/wenzhou-zheheng-steel-industry-coltd-1155366/
