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High-purity antimony granules are pretty specific stuff, mainly used in specialized manufacturing and research where things like consistent composition and particle size really matter—they can actually impact the end results. When you're picking a supplier, don’t just go for the cheapest price in the catalog. It’s smart to dig into details like purity levels, the available sizes of the granules, packaging options, and the kind of documentation they provide. Sometimes, little details can make a big difference.

A good supplier profile should tell you how they verify product specs and whether they can provide batch-specific certificates of analysis—that kind of transparency shows they have nothing to hide. Clear lot numbers, sealed containers, and labels that you can easily read also make your incoming inspection way smoother. Don’t forget to ask about lead times, minimum order quantities, shipping conditions, and how helpful their support team can be if you have technical questions. These practical points often reveal issues that a slick product page might gloss over.

This guide introduces seven different suppliers to get you started on your research. But remember, it’s not a replacement for doing your own due diligence. Supplier capabilities can change pretty quickly, so always compare current data sheets and ask for recent documentation before you make any buying decisions. Make sure that the grade they specify actually matches what your process needs—don’t rely solely on broad terms like ‘high purity,’ you need to be precise. If possible, check sample consistency and ensure their packaging can protect the material during shipping. Watch out for claims that sound too good to be true without proper records to back them up. Having a clear, tidy specification sheet helps, but it doesn’t answer every question. Sometimes, you’ll only get the full picture by talking directly with the supplier—that’s worth considering. Taking the time for proper verification really helps ensure you pick the right supplier and reduces the chance of surprises down the line.

7 Best High Purity Antimony Granules Suppliers Worldwide
Table of Contents [Hide]
1 High-Purity Antimony Granules: Composition and Characteristics
2 Purity Grades, Particle Sizes, and Technical Specifications
3 Production Methods and Quality Verification
4 Industrial and Research Applications
5 Criteria for Comparing Suppliers Worldwide
6 Profiles of Seven High-Purity Antimony Granule Suppliers
7 Global Sourcing, Compliance, and Delivery Considerations
8 High-Purity 5N–7N Zinc Telluride: Properties, Applications, and Selection Guide

High-Purity Antimony Granules: Composition and Characteristics

High-purity antimony granules are elemental Sb, commonly offered at 99.99% purity or higher. That figure alone tells only part of the story. Ask for an assay showing individual impurities, such as arsenic, lead, iron, and sulfur, plus the analytical method and detection limits. A certificate should identify the lot, not just state a general product grade. Small granules should look silvery gray, with consistent sizing and no visible oxide crust or foreign particles.

The NIST Chemistry WebBook reports antimony’s melting point as about 630.6°C; its density is approximately 6.7 grams per cubic centimeter. These values help buyers assess material identity and handling expectations. Antimony is brittle, so granules can produce fines during transport. Check packaging and request a particle-size range when surface area or melt behavior matters. Details matter.

Supply also affects purchasing decisions. The USGS Mineral Commodity Summaries 2025 estimates 2024 world mine production at roughly 110,000 metric tons, with China contributing about 60,000 tons. That concentration makes traceable sourcing and consistent lot records useful checks, not paperwork to skim. Yet a polished certificate is not proof by itself; independent testing can uncover gaps. A sensible specification states purity basis, impurity limits, granule size, packaging, and test method.

7 Best High Purity Antimony Granules Suppliers Worldwide - High-Purity Antimony Granules: Composition and Characteristics
Product Specification Profile Nominal Sb Purity Composition Description Granule Size Key Characteristics Typical Procurement Considerations
Commercial antimony granules 99.5% minimum Antimony is the principal constituent; other elements make up the remaining fraction. Individual impurity limits depend on the supplier’s specification. Supplier-defined; request the sieve or particle-size range. Elemental antimony feedstock with a metallic-gray appearance. Suitable where a moderate purity level is specified. Check the certificate of analysis (CoA) for assay method and limits for lead, arsenic, iron, and sulfur.
High-purity antimony granules 99.9% minimum At least 99.9% antimony by the stated assay basis; remaining material consists of impurities within the product specification. Supplier-defined; confirm size distribution and whether fines are included. A commonly specified high-purity tier for processes requiring tighter control of residual elements. Request lot-specific impurity results and packaging details to assess contamination risk.
High-purity, low-metal-impurity profile 99.95% minimum Nominally at least 99.95% Sb; the allowable balance should be defined by element-specific limits rather than assay alone. Made to supplier or customer requirements; verify before ordering. Useful when selected metallic contaminants need tighter control than a general assay value provides. Compare maximum limits for each critical impurity, not just the headline purity.
Four-nines antimony granules 99.99% minimum Nominally at least 99.99% Sb; trace impurities account for up to approximately 0.01% of the material. Supplier-defined; ask for particle-size tolerances and surface-condition details. Higher assay tier intended for applications with stricter material-purity requirements. Verify the analytical method, detection limits, and whether results are reported by mass.
Five-nines antimony granules 99.999% minimum Nominally at least 99.999% Sb; total impurities are limited to approximately 10 ppm by mass when the assay is expressed on that basis. Availability and size range are supplier-specific. Very high purity; trace-element control and handling conditions become increasingly important. Ask for a lot-specific CoA with individual trace-element values and stated analytical limits.
Six-nines antimony granules 99.9999% minimum Nominally at least 99.9999% Sb; this corresponds to a total impurity allowance of approximately 1 ppm by mass on the stated basis. Confirm that the supplier can provide this purity in granule form, not only in another form. Specialty ultra-high-purity tier; availability, yield, and analytical verification may be more restrictive. Require clear impurity accounting, packaging specifications, and confirmation of the delivered physical form.
Custom low-impurity granule specification Defined by contract; specify the minimum assay Composition is set by a written specification covering Sb assay and individual limits for critical impurities. Specified by purchaser and supplier, including allowable fines and oversize material. Allows the purity, particle size, and impurity limits to be matched to a particular process. Agree on sampling, test methods, acceptance criteria, CoA format, and packaging before purchase.

Note: These are generic product-specification profiles, not a ranked list of named suppliers. Purity tiers and granule availability vary by supplier; confirm all values against the current product specification and lot-specific certificate of analysis. Elemental antimony (CAS 7440-36-0) has an atomic number of 51, a density of approximately 6.697 g/cm³, and a melting point of approximately 630.6 °C.

Purity Grades, Particle Sizes, and Technical Specifications

High-purity antimony granules are commonly offered at 99.5%, 99.9%, or 99.99% purity, but these figures need context. Ask suppliers to identify whether purity is calculated by difference or measured directly. A certificate of analysis should report key impurities, especially arsenic, lead, iron, sulfur, and copper. Small details matter. Request the analytical method, detection limits, and batch-specific results; a headline purity number alone can conceal meaningful variation.

Particle size affects feeding, melting, and dust formation. Suppliers may quote ranges such as 1–3 mm or 3–6 mm, but these are examples, not universal grades. Specify sieve limits, allowable fines, and the measurement method. For process trials, compare samples under the same handling conditions. Granules that look similar can behave differently. I have seen specifications leave fines undefined; that omission is easy to miss.

Supply context also matters when evaluating consistency. The USGS Mineral Commodity Summaries 2025 estimates global antimony mine production at 100,000 metric tons in 2024, including 60,000 tons from China. The European Commission’s 2023 critical raw materials assessment also identifies antimony as critical. These reports describe supply exposure, not product quality. Request recent lot data, packaging details, and traceability records before comparing quotations.

Production Methods and Quality Verification

High-purity antimony granules begin with controlled refining. Producers may use pyrometallurgical or electrolytic processes, depending on feedstock and impurity levels. Refined metal is formed into granules through controlled pouring or atomization, then screened for size. Small differences matter. Uneven particles can affect weighing, blending, and melting behavior.

Quality verification should go beyond a purity figure on a certificate. Laboratories commonly use ICP-OES or ICP-MS to measure trace elements; X-ray fluorescence can support screening but may miss very low concentrations. Buyers should review lot-specific results, detection limits, sampling procedures, particle-size ranges, and oxygen or moisture controls. The USGS Mineral Commodity Summaries 2025 estimated global antimony mine production at about 100,000 metric tons in 2024. This is mine output, not refined supply, but it underscores why documented origin and batch traceability matter.

Tips: Request a recent certificate of analysis and confirm that its lot number matches the shipment. Ask for independent laboratory testing when impurity limits are critical. A certificate alone is not enough: sampling can miss variation within a container, and that is an easy detail to overlook. Compare retained samples when shipments differ in color, dust, or granule size.

Industrial and Research Applications

High-purity antimony granules serve as controlled feedstock for alloy development, specialty glass, and materials research. In laboratories, measured granules can be weighed into sealed preparation vessels or loaded into evaporation sources for thin-film studies. Consistent particle size helps handling, but it does not guarantee consistent results. Surface oxidation and trace impurities can still affect experiments.

Industrial demand reflects antimony’s varied roles. The U.S. Geological Survey’s Mineral Commodity Summaries 2024 estimates global mine production at about 83,000 metric tons in 2023. Its U.S. end-use estimates identify flame-retardant materials as the largest category, at roughly 40 percent, with transportation and batteries among other uses. These figures describe antimony overall, not granules specifically. That distinction matters when interpreting market data.

For research and production teams, useful supplier checks include a recent certificate of analysis, stated assay method, impurity limits, and packaging that protects material from moisture and contamination. Ask whether the reported purity is measured by mass and which elements are included in the specification. Small details matter. A shipment may meet its headline purity figure yet still vary in a trace element important to a sensitive experiment. Data sheets help, though they cannot replace incoming inspection.

Typical High-Purity Antimony Grades

The chart compares representative 3N, 4N, and 5N purity grades. Maximum impurity equivalents are calculated from the stated purity levels: 99.9%, 99.99%, and 99.999% correspond to 1,000, 100, and 10 parts per million, respectively. Grade availability and specifications vary; verify each material’s certificate of analysis for industrial or research use.

Criteria for Comparing Suppliers Worldwide

When comparing high-purity antimony granule suppliers, examine verified purity, particle-size range, and lot-to-lot consistency. Ask for a recent certificate of analysis showing the test method and measured impurities, not just a headline purity figure. ICP-OES or GDMS results can help reveal trace elements, while sieve analysis confirms whether granules match your process. Small details matter. Check packaging for moisture protection and clear lot identification. These details are easy to overlook.

The USGS Mineral Commodity Summaries 2024 estimated global antimony mine production at 83,000 metric tons in 2023. It reported about 40,000 tons from China and 21,000 tons from Tajikistan. This concentration makes origin and lead-time disclosure useful comparison points, though mine output alone does not prove granule quality. Ask suppliers for recent delivery records and documented quality controls. A single perfect certificate can still miss a production drift. Compare multiple lots where possible, and clarify how out-of-range material is handled. Supplier responses should be specific, traceable, and consistent with the documents provided.

Profiles of Seven High-Purity Antimony Granule Suppliers

Seven supplier profiles reveal different strengths. Primary refiners can offer traceable metal feedstock, while specialty-material producers often provide tighter purity specifications. Granule processors focus on particle size and surface cleanliness. Nonferrous-metal distributors may offer broader regional stock. Custom alloy suppliers can support technical orders, while laboratory-material suppliers typically serve smaller, tightly documented batches. Regional wholesalers may shorten delivery routes. Details vary.

The USGS Mineral Commodity Summaries 2024 reported estimated 2022 antimony mine production of 110,000 metric tons worldwide, including 40,000 from China. This concentration matters: buyers should check origin, processing location, and whether a supplier’s granules are refined in-house or resold. A certificate of analysis should state purity, analytical method, lot number, and impurity limits. Ask for a recent sample, too. A polished datasheet is not proof of consistent batches.

Compare the seven profiles by practical fit, not headline purity alone. Granule size affects feeding and melting; uneven pieces can complicate dosing. Confirm packaging, moisture protection, and available batch records before ordering. Some sellers publish only typical values, leaving maximum impurity levels unclear. That gap deserves scrutiny. Supplier descriptions rarely make these distinctions easy to verify, so request supporting test records and clarify how results apply to the specific lot.

Global Sourcing, Compliance, and Delivery Considerations

Sourcing high-purity antimony granules requires more than comparing quoted purity. The USGS Mineral Commodity Summaries 2025 estimates global antimony mine production at about 100,000 metric tons in 2024, with China contributing roughly 40,000 tons. This concentration makes origin, available inventory, and shipping route important purchasing questions. Ask suppliers for a current, lot-specific certificate of analysis, stated test methods, and trace-element limits. Independent testing by an ISO/IEC 17025-accredited laboratory can strengthen verification, though accreditation alone does not certify the product.

Small details matter. Confirm that the granule size distribution matches the process, and request sealed packaging with clear lot identification. A certificate describes tested samples, not every granule; retain a reference sample when feasible. Check the safety data sheet, customs classification, labeling, and chemical-inventory requirements for the destination before placing an order. Requirements can differ by market and may change, so confirm them with qualified compliance staff rather than relying on a supplier’s general assurance.

Delivery planning should include document review, transit time, and a buffer for port delays. Request written confirmation of origin documents, packing details, and shipment tracking before dispatch. The World Bank’s Logistics Performance Index highlights customs and shipment timeliness as key elements of supply-chain performance; these are practical risks, not paperwork formalities. A low price can look attractive, but a missed production window costs more. My own caution: forecasts are imperfect, so qualify a backup source before inventory runs thin.

High-Purity 5N–7N Zinc Telluride: Properties, Applications, and Selection Guide

High-purity zinc telluride (ZnTe) is a II–VI semiconductor valued for its optical and electronic properties. Available in 5N to 7N grades—equivalent to 99.999% to 99.99999% purity—these materials offer low impurity levels for applications where consistent composition and performance matter. ZnTe can be used in optoelectronic research, semiconductor development, and terahertz technologies, including components for generating or detecting terahertz radiation. Its suitability for optical and electronic applications makes it useful in both laboratory investigations and specialized material development.

Choosing the right grade depends on the intended process and performance requirements. For work that is less sensitive to trace contaminants, 5N material may be appropriate; demanding research or applications with tighter impurity controls may benefit from 6N or 7N grades. Buyers should also consider product form, dimensions, crystal quality, and compatibility with fabrication methods such as deposition or crystal processing. Clearly defined specifications help ensure the material fits the project while avoiding unnecessary purity requirements. Confirming the required grade, physical characteristics, and documentation before purchase supports reliable evaluation and consistent results.

High Purity 5N to 7N (99.999% to 99.99999%) Zinc Telluride

FAQS

What does 99.99% antimony purity mean?

It indicates a very high stated purity, but not the full impurity profile. Ask whether purity is calculated by difference or measured directly. The number alone is incomplete.

Which impurities should a certificate report?

Check for arsenic, lead, iron, sulfur, and copper. Request batch-specific results, the test method, and detection limits. Small details matter.

What should high-purity granules look like?

They are typically silvery gray, similarly sized, and free of visible oxide crust or foreign particles. Appearance helps, but it cannot confirm purity.

How does granule size affect processing?

Size can influence feeding, weighing, and melting. Specify a sieve range, such as 1–3 mm, and define allowable fines. Similar-looking granules may behave differently.

Why should buyers ask about fines?

Antimony is brittle, so granules can break during transport. Fines may affect handling or process consistency. I would not leave this detail vague.

Which methods can verify trace impurities?

Laboratories commonly use ICP-OES or ICP-MS. X-ray fluorescence can support screening, but may not detect very low concentrations. Confirm the method fits your limits.

What shipment records should buyers request?

Request a recent certificate of analysis, traceability records, packaging details, and a lot number matching the shipment. A certificate alone is not proof.

Why compare retained samples between shipments?

Sampling can miss variation within a container. Compare retained samples if color, dust, or granule size changes. It is an imperfect check, but useful.

Conclusion

This article provides a practical overview of High-Purity Antimony Granules, including their composition, key characteristics, available purity grades, particle sizes, and technical specifications. It explains how production methods and quality verification can affect consistency, and outlines considerations for evaluating material documentation and suitability for different requirements. The discussion also surveys industrial and research applications, emphasizing the importance of matching the granules’ properties to the intended process.

A supplier comparison framework highlights factors such as product specifications, quality-control practices, technical support, communication, and delivery capabilities. The article also profiles seven suppliers without favoring a single source, then reviews global sourcing considerations, including clear purchasing requirements, appropriate compliance documentation, packaging, shipping arrangements, and lead times. Together, these topics help buyers and researchers make informed comparisons and plan responsible procurement.

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Sophia

Sophia

Sophia is a dedicated marketing professional at Sichuan Jingding Technology Co., Ltd., where she plays a pivotal role in promoting the company's innovative products and services. With a deep understanding of the industry and a keen eye for detail, she consistently delivers high-quality content that......
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