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Sodium Aluminate [Solution]

    • Product Name Sodium Aluminate [Solution]
    • Alias sodium-aluminate-solution
    • Einecs 215-100-1
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
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    Specifications

    HS Code

    510489

    Chemical Name Sodium Aluminate [Solution]
    Chemical Formula NaAlO2 (in aqueous solution)
    Cas Number 11138-49-1
    Appearance Clear to slightly hazy, colorless to pale yellow liquid
    Solubility In Water Highly soluble
    Ph 11.5 - 14
    Density 1.35 - 1.55 g/cm3 (at 20°C)
    Alumina Content Al2o3 10% - 25% by weight
    Sodium Oxide Content Na2o 8% - 22% by weight
    Odor Odorless
    Boiling Point Approximately 100°C (water-based solution)
    Molecular Weight 81.97 g/mol (anhydrous NaAlO2)
    Storage Temperature Store above freezing point, typically 5°C - 30°C

    As an accredited Sodium Aluminate [Solution] factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Sodium Aluminate Solution is packaged in a 25-liter blue HDPE drum with a secure screw cap, clearly labeled with hazard warnings.
    Shipping Sodium Aluminate [Solution] should be shipped in tightly sealed, corrosion-resistant containers. It requires proper labeling and classification as a caustic, corrosive liquid. Transport in a well-ventilated vehicle, away from acids and moisture, following relevant regulations. Personal protective equipment must be used during handling to prevent contact and ensure safety during transit.
    Storage Sodium Aluminate [Solution] should be stored in tightly closed, corrosion-resistant containers, away from acids and moisture. The storage area should be well-ventilated, cool, and dry, protected from direct sunlight and incompatible substances. Clearly label containers, and ensure spill containment measures are in place. Restrict access to trained personnel and keep emergency washing facilities nearby.
    Application of Sodium Aluminate [Solution]

    Applications of Sodium Aluminate Solution in Industrial Manufacturing

    Sodium aluminate solution, as manufactured in our dedicated facilities, is widely integrated as a technical raw material in multiple sectors requiring precise chemical reactivity and phase control. Below, we detail real-world downstream industrial applications, each with specific compliance expectations, additive ratios, manufacturing steps, and finished product classes benefitting from our product's performance in their core processes.

    1. Water Treatment—Municipal and Industrial Wastewater Clarification

    Municipal and industrial operators utilize sodium aluminate solution for phosphorus removal and as a coagulant aid, especially where alum or iron salts alone do not meet regulatory discharge thresholds. Within the chemical precipitation stage, this product accelerates the settlement of suspended solids and optimizes sludge characteristics to enhance dewatering efficiency, reducing plant downtime and maintenance requirements for operators aiming to meet increasingly stringent limits for nutrient discharge.

    Industry compliance standards

    • USEPA Clean Water Act (CWA)
    • EN 878:2016 European requirements for wastewater treatment
    • China GB/T 18918-2002 (Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants)

    Typical usage ratio

    • 0.5–2.5 mmol Al/L, depending on influent phosphorus content and sludge age; operators adjust dosage according to specific site influent quality and permitted effluent limits.

    Downstream process integration

    • Direct dosing into primary or secondary clarifiers, often co-dosed with polymer flocculants; sometimes used upstream in grit chambers for grease and oil removal synergy.

    Final product types

    • Treated municipal and industrial effluents compliant with national discharge limits
    • Dewatered biosolids for agriculture or disposal
    • Recovered phosphorus materials for fertilizer blending

    2. Paper Industry—Alumina Sizing and Fillers Production

    The pulp and paper industry relies on controlled addition of sodium aluminate solution in the wet-end process to neutralize pH after acidic treatments and in generating alumina-based fillers. The chemical manages calcium ion availability, improves sizing efficiency for surface and bulk, and forms high-performance precipitation coatings which optimize print surface and mechanical strength. This intervention directly impacts runnability, brightness, and printability, supporting manufacturers' quality consistency for export-grade papers.

    Industry compliance standards

    • ISO 187:2022 (Paper and board—General test methods for physical properties)
    • FDA 21 CFR 176.170 (Components of paper and paperboard in contact with aqueous and fatty foods)
    • China GB/T 7974-2002 (Paper—Determination of aluminum oxide content)

    Typical usage ratio

    • In-fillers: 0.1–0.4% Al2O3 (by dry paper weight); as sizing agent precursor: 0.05–0.25% dosage, modulated according to paper grade and machine speed.

    Downstream process integration

    • Metered into the stock preparation section prior to headbox; also dosed into coating kitchens for synthetic fillers used in glossy and specialty grades.

    Final product types

    • Coated and uncoated printing papers
    • Food-grade packaging boards
    • High-brightness writing papers

    3. Zeolite Catalyst and Molecular Sieve Manufacturing

    Catalyst and molecular sieve plants use sodium aluminate as a key aluminum source in hydrothermal synthesis of aluminosilicate frameworks. Controlled dosing, purity, and stoichiometric balance in this stage affect the Si/Al ratio and crystallinity of zeolite products, which directly impact selectivity, surface area, and catalytic activity in downstream applications such as FCC catalysts and environmental odor control. Efficient batch consistency and real-time quality monitoring during addition are crucial for traceable supply to oil refineries and process plants.

    Industry compliance standards

    • API Recommended Practice 932-B (Process Industry—Zeolite-based Catalysts)
    • ISO 9001:2015 (Quality management—Manufacturing of chemical catalysts)
    • REACH registration for synthetic zeolites and intermediates

    Typical usage ratio

    • SiO2/Al2O3 ratios of 2–100 depending on target zeolite (e.g., for NaY: sodium aluminate at 0.25–0.32 mol per mol sodium silicate); plant operators fine-tune within formula for tailored lattice properties.

    Downstream process integration

    • Mixed in gel phase during batch autoclave synthesis alongside sodium silicate, under precisely controlled temperature and pH conditions; introduced at feed tank to avoid premature precipitation.

    Final product types

    • Fluid catalytic cracking (FCC) catalysts
    • Adsorbent molecular sieves
    • Ion exchange resins for hydrocracking and detergents

    4. Construction—Accelerator in Ready-Mix and Precast Concrete

    In the construction sector, sodium aluminate solution functions as a specialty accelerator for shotcrete, ready-mix, and precast concrete products. By facilitating rapid initial set and controlling alkali-silica reactivity, it enables safe overhead and vertical application, even under cold weather conditions. Its use reduces cycle times for tunnel linings and prefabricated segments, supporting continuous production and quality control demands for major infrastructure projects and certified civil engineering works.

    Industry compliance standards

    • EN 934-2:2009+A1:2012 (Admixtures for concrete, mortar, and grout—Accelerating admixtures)
    • ASTM C494/C494M – 19 (Chemical admixtures for concrete)
    • China GB 8076-2008 (Admixtures for concrete national standard)

    Typical usage ratio

    • 2–6% by cement weight for shotcrete processes; range varies in accordance with cement type, temperature, and required acceleration profile.

    Downstream process integration

    • Inline dosing at wet-mix or dry-mix nozzles prior to spraying; also added to mixing water at batch plant for modular segment casting.

    Final product types

    • Precast concrete tunnels and segments
    • Shotcrete linings for mining and civil works
    • High-early-strength concrete slabs and panels

    5. Alumina-Based Fire Retardant and Insulation Materials

    Producers of high-performance mineral insulation and fire-retardant boards apply sodium aluminate during the wet-mix stage to introduce both reactive alumina and alkalinity, essential for forming stable composites. Its addition aids in binding lightweight aggregates, provides chemical resistance, and ensures low-temperature sintering, resulting in high-density, structural panels suited for safety and building code compliance in public and industrial architecture.

    Industry compliance standards

    • EN 13501-1:2018 (Fire classification of construction products and building elements)
    • UL 263 (Standard for Fire Tests of Building Construction and Materials)
    • China GB 8624-2012 (Classification for burning behavior of building materials and products)

    Typical usage ratio

    • 3–8% by binder mass for insulation panels; higher proportions used for self-supporting fire doors and advanced refractory applications, adjusted based on board type and aggregate content.

    Downstream process integration

    • Blended in slurry or paste formation step with magnesium or calcium silicates; cured through low-pressure steam autoclaves or oven drying for controlled set and hardening profiles.

    Final product types

    • Calcium silicate fireproof boards
    • High-density insulation panels
    • Architectural fire doors and wall linings
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    Certification & Compliance
    More Introduction

    Sodium Aluminate Solution: Shaping Industrial Chemistry with Reliable Performance

    Understanding Sodium Aluminate Solution

    Sodium aluminate solution has proven itself across dozens of industries, where high reactivity, consistent chemistry, and robust handling matter every day. We manufacture our sodium aluminate solution in modern, closed-loop reactors, keeping batch integrity and purity as high as possible. Over many years supplying this product, we've refined our process to balance concentration, viscosity, and aluminum content—details that factory managers and process engineers rely on for predictable results.

    Key Specifications and Concentrations

    The sodium aluminate solution comes in several standard concentrations, including models such as 38% and 45% NaAlO2 by mass. Both offer a clear, low-viscosity character even under variable temperatures, which comes in handy whether someone is dosing large tanks in a water treatment plant or blending to precise tolerances for catalyst manufacturing. We’ve built our approach to tolerate shipments in volumes from intermediate bulk containers up to full tanker loads, holding quality from tank to tank. The solution typically holds a Na2O/Al2O3 mole ratio between 1.3 and 1.7, a range that our team checks and keeps steady. This ratio isn’t just a number—it affects everything from reactivity in wastewater precipitation to the speed of setting in concrete accelerators.

    Our Approach: Focus on Application, Not Just Composition

    Every batch we make is judged not only by its paper specifications, but by how it behaves in real-world applications. Sodium aluminate can be unforgiving when even trace impurities creep in, so we take pride in our quality controls. Over the years, we’ve invested in in-line monitors and precise analytical equipment. This reduces downtime for our customers, who rely on each tank holding specification for their process to deliver end results. A water treatment facility can’t gamble on a drum that varies from its expectations—overdosing or underdosing leads to regulatory headaches and impacts local communities relying on safe, reliable water.

    How Sodium Aluminate Solution Solves Industrial Problems

    Sodium aluminate solution fills roles where high pH, high aluminum, and clear, liquid dosing are priorities. In municipal and industrial water treatment, it stands out for its reliability in coagulation and removing dissolved metals like phosphates and heavy metals. Many plants have old, riveted dosing systems incapable of handling dry powders or viscous slurries. Liquid sodium aluminate avoids dusting, scales well from laboratory pilot studies to full-plant runs, and doesn’t require the same intensive handling as dry alumina-based additives.

    We’ve watched operators struggle with swelling clogs and inconsistent dosing from granular sodium aluminate or alumina powder—liquid forms bypass those constant headaches. The product enters reaction vessels fully dissolved, eliminating the undissolved residue that can foul pipes and reduce efficiency. In every shipment, we look beyond the minimum requirements, checking clarity and particulate content to ensure it won't contribute to downstream buildup. No plant wants shutdowns or added maintenance—our long-term partners count on us for this kind of reliability.

    Specific Uses in Water Treatment and Wastewater Processes

    Most inquiries for sodium aluminate solution come from the water sector, where it serves as a coagulant aid. Aluminum ions play a direct role in gathering suspended solids, fine clays, phosphates, and organics into settleable flocs. Water utilities switching from solid to liquid dosing systems benefit from fast introduction to clarifiers and stable, repeatable chemical action each hour. Our solution finds a home in both urban waterworks and rural treatment plants, as well as in recycling loops for paper and textile manufacturing. Many operators highlight lower operating costs and improved sludge properties compared to traditional alum, especially when it comes to dewatering and reducing disposal volume.

    Industrial wastewater streams are evolving rapidly, reflecting stricter discharge regulations and a growing emphasis on removing phosphorus as a nutrient. High-purity sodium aluminate solution lets plants meet tough targets. Its strong alkalinity can correct incoming streams low in pH while delivering aluminum directly in a reactive form. Other coagulants demand careful pH adjustment with extra caustic or lime, drawing out the treatment process. Our solution reacts promptly and won’t foul equipment with excess precipitates, as long as dosing is managed properly.

    Diversified Industrial Applications

    Outside water treatment, sodium aluminate solution brings value to concrete, ceramics, and catalyst industries. For accelerator formulations in cement and shotcrete, the liquid format allows rapid setting in tunnels and critical construction zones. Sandwich panel makers and precast concrete plants trust the controlled release of aluminum hydroxide during hydration, driving fast turnarounds and reliable strength gains, especially under variable curing conditions.

    Glass and ceramic companies use sodium aluminate to tweak viscosity, improve charge stability, or accelerate firing. By staying fully dissolved, our product gives kiln operators confidence in batch-to-batch uniformity, free of undissolved lumps or localized hot spots. Our technicians routinely consult with clients to fine-tune dosing based on their raw mix chemistry, troubleshooting any unusual outcomes and sharing practical adjustments. In catalyst manufacturing, the solution supports controlled gelation and phase formation, laying the foundation for stable, high-surface-area materials prized in petrochemical reactors.

    Why Liquid Sodium Aluminate Stands Apart from Powders

    Solid sodium aluminate powders offer simplicity in shipping, but they come with practical challenges. Handling dust creates exposure risks in both chemical blending and operational areas, raising the need for dust collection systems and strict safety oversight. Unless storage is humidity-controlled, cakes and clumps form, requiring additional blending and sometimes disposal of partial inventories. Plant managers regularly note the downtime triggered by unloading, weighing, pre-dissolving, and calibrating for variations in powder batches.

    Liquid sodium aluminate solution bypasses these friction points. It arrives ready to pump, measured out precisely, and quickly incorporates into process flows. Regular contracts often feature bonded railcars or trucked-in totes, which are unloaded directly into sealed storage, keeping plant air clean and worker handling minimized. Our facility has focused resources on keeping purity high, and we keep metal trace levels—iron, calcium, magnesium—well within safe operational limits for even the tightest downstream specifications.

    Over time, we've seen liquid sodium aluminate save our clients thousands in maintenance and labor. Plumbing stays cleaner, tanks rarely see sediment, and chemical dosing runs on schedule. By moving to solution form, facilities gain both chemical and process efficiency. Waste is lower, batch-to-batch variability drops, and the working environment improves, especially where employee safety and product consistency both count heavily.

    Special Handling and Storage Considerations

    Storing and moving sodium aluminate solution isn’t without its challenges. As a high-pH, corrosive liquid, it demands material selection and personal protective measures similar to other caustic alkali chemicals. Stainless steel, certain grades of polymer, or specially coated tankers endure repeated shipments without wear or leaching. Our own delivery trucks and tanks follow strict schedules for cleaning and passivation, aiming to deliver every load as clean as the day it left our facility. Leaks and splashes demand careful attention, so we support customers with advice on maintenance and the best practices we’ve developed across our operations.

    Our product needs to stay sealed to avoid carbon dioxide ingress, which can reduce available sodium aluminate content and form unwanted solids. Customers with dedicated day tanks and nitrogen blanketing usually report consistent performance, and we share these tips as part of new product onboarding. Staff training and clear labeling round out the safety approach—protecting workers remains a priority throughout the supply chain, from our site to end users.

    Differences from Related Products

    Choosing sodium aluminate solution over competitive products typically comes down to chemistry, delivery, and operational needs. Compared with traditional coagulants like aluminum sulfate or ferric chloride, sodium aluminate brings higher alkalinity and immediate reactivity at much lower dosages. Many operators find they can eliminate separate caustic soda additions, as the solution buffers pH on its own. This streamlines dosing stations, reduces chemical inventory, and leads to more straightforward compliance monitoring.

    The difference from simple alum, for example, shows in phosphorus removal from wastewater. Sodium aluminate achieves similar or better removals with less produced sludge and better dewatering properties. Operators report higher filter cake dryness and quicker cycles in centrifuges and filter presses, which matters where disposal costs make up a big slice of operational expenses. The solution’s higher pH support can also introduce added safety and comfort for process managers, sidestepping acidification episodes that occasionally drive plant upsets with traditional alum.

    Our experience dealing with customers who have switched from powdered forms reveals major improvements in on-site safety, process uptime, and chemical accuracy. Unlike powder, the solution form demands no dedicated mixing equipment or large indoor storage, especially compelling in high-throughput plants. For cement and concrete, the difference shows in the speed of batching and mixing—liquid sodium aluminate supports modern, high-output workflows and advanced robotic dosing, ensuring construction deadlines and product integrity are both within reach.

    Real-World Track Record

    Having supplied sodium aluminate solution for years across sectors, we’ve gathered feedback from operators on the ground. Those in municipal water stress the importance of clarity and particle-free solutions. Even small amounts of sediment can clog injectors or accumulate at the bottom of tanks, slowing operations during maintenance rounds. In the cement industry, predictable set rates and total solubility build confidence in every pour—on big projects, a few minutes’ deviation means lost labor and wasted material.

    We source technical-grade raw materials, audit supply chains for consistency, and avoid unnecessary additives or processing aids. Each batch is logged, samples retained, and any returned or rejected products are analyzed thoroughly by both operations and quality control teams. This cycle of feedback and improvement pushes us to maintain strict internal standards, especially for contracts tied to drinking water, environmental controls, and high-performance manufacturing applications.

    Continuous Improvement and Innovation

    Industry standards keep shifting, sometimes faster than regulatory agencies roll out updates. Recent years have seen lowered phosphorus limits, tighter standards on residual heavy metals, restricted byproduct formation, and changing preferences away from powders or low-purity sources. We adapt by investing in better purification, smarter shipping logistics, and tighter batch control, supported by digital tracking of every shipment. Customers see and feel the difference—fewer plug events, faster permitting, and stronger supply chain trust.

    We don’t believe in “one size fits all.” That’s why discussions with plant engineers shape our product offering—tweaking formulations, offering application-specific dosing advice, and sharing lessons from field experience. Whether scaling a new process, optimizing an existing treatment train, or facing out-of-spec raw water inputs, we remain present as technical partners, not just vendors shipping chemicals in and out.

    Addressing Environmental and Regulatory Pressures

    As regional and national regulators ratchet up enforcement around heavy metals, phosphorus emissions, and waste volumes, sodium aluminate solution lets plant managers adapt to new benchmarks with minimal equipment overhaul. Old dosing equipment often needs only simple pump adjustments, and most staff training happens within a single shift. Unlike some coagulants, the product’s low solid waste footprint and recyclability add to sustainability goals, both in treatment and disposal. Our own manufacturing plant has upgraded to closed-loop water reuse and off-gas removal, aligning process environmental performance with what we ask of our customers.

    For products sent overseas, we certify against local registration requirements, tailoring documentation packages with complete, traceable information about batch analysis, impurity declaration, and transport compliance. Experience tells us that border delays and incomplete paperwork can shut down schedules, so our compliance team works up front to anticipate evolving paperwork demands. Whether moving a few tons regionally or container loads globally, documentation integrity supports both safety and delivery timelines.

    Conclusion: Building Long-Term Reliability in Chemical Supply

    Our journey with sodium aluminate solution never stops at simply shipping product. We answer calls from operators working late shifts and help new plants balance throughput and treatment targets. There’s pride in knowing years of process improvement mean every tank arrives on-ratio, fully dissolved, and ready for action. In a market full of repackaged, reshuffled, and relabeled chemicals, standing behind the product from raw sourcing to end results matters.

    Customers come back because the performance stays consistent, the support is practical, and the shipment integrity is proven. As regulations toughen, processes grow more sophisticated, and supply chains stretch further, sodium aluminate solution built on these principles will remain a reliable backbone in chemical treatment, manufacturing, and materials science across industries. Our team keeps the focus on results, engagement, and trust, knowing every drum shipped is an extension of our commitment to long-term value and shared success.