Product Overview
We are a reliable Powder Ammonium Alum Supplier. Powder Ammonium Alum (Ammonium Aluminum Sulfate, chemical formula NH4Al (SO4) 2・12H2O) is a white, free-flowing crystalline powder produced from controlled crystallisation and precise screening. While the block form is ideal for natural deodorant stones, the powder form is designed for applications requiring fast dissolution, accurate weighing and automated dosing.
Powder ammonium alum dissolves quickly in clean water, making it the preferred choice for water treatment plants with automatic dosing systems, cosmetic and toiletry manufacturers who need precise formulation, and industrial processors where block crystals would require grinding before use. Available in multiple mesh sizes and purity grades, it delivers the same astringent and coagulation performance as block alum — but with significantly easier handling.
Powder Ammonium Alum – White Crystalline Powder
White crystalline powder ammonium alum (ammonium aluminum sulfate), suitable for industrial applications requiring accurate weighing, convenient handling, and controlled dosing.
Ammonium Alum Solution – Dissolved Alum Sample
A laboratory flask containing dissolved ammonium alum alongside crystalline material, illustrating its preparation as an aqueous solution for suitable industrial applications.
Key Specifications Summary
Core Technical Parameters for Quick Screening
| Item | Specification |
| Appearance | White / colourless free-flowing crystalline powder |
| Al2O3 Content | 【10.0% – 11.0%】 |
| Fe Content | ≤ 【0.001% – 0.01%】 (grade-dependent) |
| Water Insoluble Matter | ≤ 【0.02% – 0.1%】 |
| pH (1% solution) | 【3.0 – 4.0】 |
| Particle Size / Mesh | 【30 mesh—50 mesh】 |
| Dissolution | Fast — fully dissolves in clean water within 【10 – 30 minutes】 |
Full test data — including heavy metal indices (Pb, As, Cd, Hg), loss on drying, chloride content, particle size distribution and batch-wise impurity limits — are contained in our official TDS for quality review, cosmetic regulatory compliance and customs clearance.
All on-page figures represent our standard production range. Batch-wise actual values are shown on the COA supplied with every shipment. Third-party testing is supported.
Why Choose Powder vs. Block Ammonium Alum
Both forms have the same chemical composition. Choose the powder form when:
- You need fast dissolution for water treatment automatic dosing systems
- You manufacture cosmetics or personal care products and need precise weighing and formulation
- Your industrial process requires a ready-to-use solution without pre-grinding blocks
- You need consistent particle size for automated filling and packaging equipment
- Your application requires measuring by weight rather than by visual block size
Choose the block form when you need natural crystal deodorant stones, retail consumer products, or applications where a stable solid crystal is required.
Not sure which form fits your process? Send us your application and equipment type — we will recommend the right form and mesh size.
Available Grades
Cosmetic / Deodorant Grade
Ultra-low heavy metals and high purity. Suitable for cosmetic formulation, personal care products, and ingredients used in skin-contact applications. Meets relevant regulatory requirements for toiletry and cosmetic ingredients.
Water Treatment Grade
Standard purity for drinking water and wastewater coagulation, turbidity removal and flocculation. Fast dissolution makes it ideal for continuous dosing at water treatment plants.
Industrial Grade
For general industrial applications — leather tanning, textile mordanting, paper processing and fire-retardant additive use. Economical bulk option.
Custom mesh sizes and purity levels are available. Tell us your target specification and we will confirm what we can supply.
Core Advantages of KolinSC Powder Ammonium Alum
Fast Dissolution, No Grinding Needed
Precisely screened crystalline powder dissolves quickly in clean water, eliminating the need for on-site crushing or grinding — directly compatible with automatic solution preparation and dosing systems.
Accurate Dosing & Consistent Formulation
Free-flowing powder flows well through screw feeders and weighing equipment, ensuring accurate and repeatable dosing for water treatment and cosmetic manufacturing.
Multiple Mesh Sizes Available
From coarse 20-mesh to fine 80-mesh powder, we can match the particle size your process and equipment require.
High Purity, Low Iron
Controlled production keeps iron and heavy metal levels low, producing a clear solution without unwanted colouration — critical for cosmetic and drinking-water applications.
Free-Flowing, Low Caking
Properly dried and screened powder flows freely in standard storage and packaging conditions, with minimal caking when kept sealed and dry.
Consistent Batch Quality
Every lot tested for Al2O3, iron, insoluble matter, pH and particle size. COA ships with every container.
Main Application Fields
Water Treatment Plants
Traditional coagulant for drinking water and wastewater. Powder form dissolves directly into automatic dosing systems to remove suspended solids, turbidity and colloidal impurities.
Cosmetic & Personal Care Manufacturing
Ingredient in deodorant formulations, after-shave lotions, skin toners and toiletry products. Powder form enables precise formulation and easy blending.
Leather Tanning & Retanning
Astringent and tanning auxiliary in leather processing, improving leather grain and stability.
Textile Dyeing & Mordanting
Fixing agent and mordant in textile dyeing processes, improving colour fastness.
Paper Industry
Sizing auxiliary and precipitating agent in papermaking.
Fire-Retardant Industry
Component in fire-retardant formulations for textiles and paper.
Laboratory & Reagent Use
High-purity grade available for laboratory and analytical reagent applications.
Packaging & Storage
Packaging Options
- 25 kg multi-paper / PP woven bag with inner PE moisture-proof liner (standard export)
- 1000 kg jumbo / IBC ton bag for bulk industrial and water treatment customers
- Palletised and stretch-wrapped for container loading
- For cosmetic-grade powder: inner poly bag + outer kraft / carton available to protect purity
- Custom small packaging available for cosmetic ingredient distributors
Storage Requirements
Store in a cool, dry, well-ventilated warehouse. Powder form is more hygroscopic than block form — keep bags tightly sealed at all times. Once opened, use promptly and reseal. Avoid moisture, direct sunlight and incompatible chemicals.
Shelf life: 24 months in original sealed packaging under proper dry storage.
B2B Order & Trading Information
- MOQ: 【1 Metric Ton (1,000 kg)】
- Sample Service: 500 g – 1 kg sample available in your required mesh size; customer covers express freight; The sample fee can be refunded against a confirmed bulk order.
- Monthly Production Capacity: 【3000MT / month】
- Lead Time: 7 – 15 working days after deposit confirmation
- Payment Terms: T/T,XTransfer
- Export Documents Available: COA, MSDS/SDS, Certificate of Origin, Commercial Invoice, Packing List
- HS Code: 【28332900】 (subject to destination-country customs classification)
- Main Markets: Southeast Asia, Middle East, Africa, Europe, South America
Why Choose KolinSC as Your Ammonium Alum Supplier
We supply ammonium alum in both powder and block forms, plus potassium alum, PAC and PAM — consolidate your chemical sourcing with one reliable partner.
We understand that different processes need different particle sizes. Tell us your equipment and target mesh, and we will match it.
Whether you run a water treatment plant, a cosmetic factory or an industrial processor, our team helps you select the right grade and dosage.
Every shipment includes a batch-matched Certificate of Analysis. SGS, BV and other third-party inspections before loading are welcome.
FAQ (Hot Questions from Global Buyers)
Powder ammonium alum dissolves much faster than block crystals. In stirred clean water at room temperature, it typically fully dissolves within 10 – 30 minutes depending on mesh size and water temperature. Finer mesh dissolves faster.
We commonly supply 20-mesh, 40-mesh, 60-mesh and 80-mesh powder. Custom mesh sizes are available. Tell us your process requirement and we will confirm what we can produce.
They are chemically identical (NH4Al(SO4)2·12H2O). Powder dissolves faster, allows accurate weighing and is ideal for water treatment dosing and cosmetic formulation. Block form is used directly as natural deodorant stones and where a stable solid crystal is needed. Choose based on your process.
Dosage depends on raw water quality, turbidity and treatment objectives. As a traditional coagulant, alum dosing varies widely — a jar test is strongly recommended to determine the optimal dosage for your specific water.
Yes, our cosmetic-grade powder meets low heavy-metal limits for skin-contact and toiletry ingredient use. Please specify your regulatory market (EU, US, ASEAN, etc.) when enquiring so we provide the appropriate grade and documentation.
Powder is more hygroscopic than block, so moisture control is important. We use PE-lined sealed bags and palletised loading. As long as packaging remains intact and the container is dry, caking will not occur. Store in a dry warehouse after arrival.
24 months from production date in the original sealed bag, stored in a cool, dry warehouse. Once opened, reseal tightly and use promptly.
Yes. 200 g – 1 kg samples are available in your required mesh size and grade. The sample fee can be refunded against a confirmed bulk order. Customer covers express freight.
Both are alum double sulfate crystals. Ammonium alum contains ammonium ions; potassium alum contains potassium ions. They share many applications. Potassium alum is often preferred for cosmetic and deodorant markets in some regions; ammonium alum is typically more economical. Tell us your application and target market, and we will advise.
Ammonium Alum Knowledge Center
Explore our technical guides, product selection advice and industrial application resources.
WE’RE HERE TO HELP
Looking for a fast-dissolving, accurately dosed ammonium alum powder supplier?
Tell us your application (water treatment / cosmetic formulation / industrial process), required mesh size and grade, target quantity and destination port — we will reply within 12 working hours with a free sample plan and competitive factory pricing.
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