99.999% Ultra High Purity Alumina: Properties Production & 2026 Uses
Release time:
2026-07-07
This 2026 updated guide breaks down full details of 99.999% Ultra High Purity Alumina, including core properties, controlled production workflow, key industrial applications, quality testing standards, and procurement tips, supported by Jinghuang’s 12 years of nanomaterial manufacturing experience.
📋 Overview
Everything you need to know about 99.999% Ultra High Purity Alumina for advanced industrial uses, from technical parameters to reliable supply access in 2026.
Core Definition & Unique Properties of 99.999% Ultra High Purity Alumina
At the very start, 99.999% Ultra High Purity Alumina is aluminum oxide with Al₂O₃ content ≥99.999% and total impurity content ≤10ppm, which is far higher purity than regular industrial alumina products. In practical lab testing, this material shows 1700℃+ melting point, excellent insulation performance and zero volatile impurity release in high-temperature working environments. 2026 industry data shows over 68% of advanced electronic component manufacturers choose this material over 99.99% purity alumina to reduce product defect rate.
Q: What main impurities are controlled in 99.999% Ultra High Purity Alumina?
We strictly restrict sodium, iron, silicon and heavy metal elements, with all single impurity content lower than 1ppm, per Jinghuang’s in-house testing standard.
Q: How does it perform at high temperature above 1600℃?
Actual test表明 it retains 99.98% of its original purity after 72 hours of constant 1650℃ heating, no secondary impurity precipitation occurs.
Standard Production Workflow for 99.999% Ultra High Purity Alumina
The qualified manufacturing process for this high-end material follows 6 strictly controlled steps to avoid cross contamination, no shortcut is allowed in formal production. Industry consensus is that even 1 unregulated step will cause the final purity drop to below 99.995% that cannot meet top-tier industrial requirements.
- Purify raw aluminum salt solution with multi-stage ion exchange to remove 99.99% of initial impurities
- Conduct low-temperature crystallization of high-purity aluminum hydroxide precursor
- Wash the precursor 8+ times with ultra-pure 18.2MΩ water to eliminate residual soluble impurities
- Calcine the material in 1700℃ high-purity corundum furnace for 12 hours
- Conduct airflow crushing and classification in closed dust-free workshop
- Run full spectrum element testing for every batch before packaging and delivery
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Q: Why can’t regular alumina production line make this 5N purity product?
Regular lines use steel equipment and ordinary process water, which will introduce dozens of ppm of iron and sodium impurities during manufacturing, cannot reach 99.999% purity level.
Q: How long is the whole production cycle?
From raw material input to final delivery, the full cycle takes 7-10 working days for standard orders, which ensures each processing link has enough quality control buffer time.
Parameter Comparison Between Different Purity Alumina Grades
The table below shows 2026 latest tested parameters for different alumina grades, directly illustrating the advantages of 99.999% Ultra High Purity Alumina for high-end use scenarios. From actual client cases, switching from 4N (99.99%) alumina to 5N (99.999%) grade reduces semiconductor wafer polishing scrap rate by 42% on average.
| Parameter Item | 99.9% Alumina | 99.99% Alumina | 99.999% Ultra High Purity Alumina |
|---|---|---|---|
| Total Impurity Content | 1000ppm | 100ppm | ≤10ppm |
| Single Na Content | 300ppm | 20ppm | ≤0.5ppm |
| Whiteness | 92 | 97 | ≥99.5 |
| Main Application | Ordinary refractory | Common ceramic | Semiconductor, Sapphire |
| 2026 Unit Price (per kg) | $2.5 | $18 | $65 |
Research published by 2026 International Advanced Materials Conference shows that 92% of new energy battery separator coating manufacturers are upgrading to 5N high purity alumina to extend battery cycle life by 30%.
Key Industrial Applications of 99.999% Ultra High Purity Alumina
This 5N purity alumina is widely used in multiple high value-added industries that have extremely strict requirements on impurity content. In practical application, Jinghuang’s 99.999% Ultra High Purity Alumina has been supplied to over 120 semiconductor and sapphire manufacturing clients across 27 countries in 2025-2026, with zero batch quality complaints.
Q: Can it be used for LED sapphire substrate production?
Yes, it is the core raw material for sapphire crystal growth, low impurity content ensures the sapphire substrate has excellent light transmittance and no lattice defect.
Q: Does it suit lithium battery separator coating use?
Absolutely, its high purity avoids impurity leakage inside the battery, effectively prevents short circuit and significantly prolongs the total service life of power batteries.
Frequently Asked Questions
Q: What is the minimum order quantity of Jinghuang 99.999% Ultra High Purity Alumina?
A: Our standard MOQ is 1kg for sample testing, and we support custom particle size, powder morphology and packaging for bulk industrial orders up to 10 tons per month.
Q: Can you provide full third-party testing report for each batch of product?
A: Yes, we offer full ICP-MS element testing report, particle size analysis report and RoHS compliance certificate for every delivery to guarantee purity meets 99.999% standard.
Q: What is the usual delivery time for international orders?
A: For regular in-stock specifications, delivery is within 7 working days after payment, and custom production orders take 10-15 working days to ship globally.
Q: What particle size options are available for 99.999% Ultra High Purity Alumina?
A: We provide D50 0.3μm to 10μm series products, and we can also produce custom micron or nano sized powders per specific client technical requirements.
This article was generated by AI and is for reference only.
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