Poly Aluminium Chloride - PAC
Poly Aluminium Chloride (PAC)
Description More
Poly Aluminium Chloride (PAC), with the general chemical formula [Al₂(OH)ₙCl₆₋ₙ]m, marketed under the brand name PAC ARNICO, is a pre-hydrolyzed, exceptionally powerful inorganic polymeric coagulant based on aluminum. This product is the result of years of dedicated research and development, meticulous process engineering, and relentless quality control at ARNICO Company. It has been precisely designed and manufactured as a flawless, high-performance solution for the complete replacement of outdated, traditional coagulants such as Aluminum Sulfate (Alum) and Ferric Chloride (Iron(III) Chloride). ARNICO PAC is no longer just a simple chemical commodity; it is a comprehensive engineering solution tailored to conquer the most complex challenges in drinking water purification, industrial wastewater treatment, and demanding manufacturing processes.
The fundamental superiority of ARNICO PAC over conventional Alum lies in its pre-formed and expertly engineered molecular architecture. Within ARNICO’s unique and proprietary manufacturing process, the controlled hydrolysis of aluminum salts is conducted under meticulously optimized conditions, with continuous and rigorous monitoring of temperature, pressure, and precise stoichiometric ratios. This tightly controlled process gives rise to long-chain polymeric structures with a dense cationic charge density and a targeted, optimized molecular weight. Consequently, the moment ARNICO PAC is injected into raw water, these pre-activated polymer chains are immediately ready to aggressively bind with colloidal particles, natural organic matter, and a broad spectrum of pollutants via powerful electrostatic neutralization and inter-particle bridging. In stark contrast, upon injection, Alum must undergo time-consuming and incomplete in-situ hydrolysis reactions that are heavily dependent on the delicate and often fluctuating water chemistry. This dependence frequently results in suboptimal and unpredictable performance. ARNICO PAC eliminates this uncertainty entirely, transforming the coagulation process from an operator-dependent art into a predictable, reliable, and highly efficient science.
With a profound understanding of the diverse and highly specific needs of different industries, ARNICO formulates, manufactures, and delivers Poly Aluminium Chloride in two distinct and highly specialized grades. These differences go far beyond mere commercial labeling; they are deeply rooted in the product’s formulation, its degree of purity, and its ultimate field of application:
1. Drinking Water Grade (PAC-DW): This grade is ARNICO’s flagship product, the standard-bearer of quality, and the symbol of our unwavering commitment to public health and safety. It is manufactured in strict compliance with the most stringent national standards (such as the ISIRI 1053) and authoritative international benchmarks for drinking water treatment chemicals, most notably the NSF/ANSI/CAN 60 standard. In the Drinking Water Grade, impurity control is elevated to a world-class level. All potentially hazardous heavy metals—including iron, manganese, lead, cadmium, chromium, and mercury—are rigorously controlled to levels virtually undetectable by state-of-the-art instrumental analysis, far below even the most conservative regulatory limits. The purity of the active ingredient, Aluminum Oxide (Al₂O₃), is guaranteed at a minimum of 30% by weight. This exceptional purity, combined with an optimized high basicity in the ideal range of 70% to 85%, delivers unparalleled efficiency in the removal of seasonal turbidity spikes, natural organic matter (NOM)—the primary precursors of harmful disinfection by-products (DBPs)—as well as color, taste and odor compounds, algae, bacteria, and viruses from both surface and groundwater sources.
2. Industrial & Wastewater Grade (PAC-IND): This grade is the front-line soldier for treatment operations in the harshest and most complex industrial environments. Its formulation is engineered with extraordinary flexibility to effectively counteract the variable and often unpredictable nature of industrial effluents. The key distinguishing feature of ARNICO PAC-IND is its customizable basicity level, available within a wide range from 40% to 85%. This unique capability empowers plant engineers and water treatment specialists to select and fine-tune the product precisely according to the specific pollutant profile—whether it be breaking stable oil-water emulsions, precipitating heavy metals, decolorizing textile dye waste, or reducing high COD levels—and the particular process conditions of their facility. With a guaranteed minimum 28% by weight Al₂O₃ and robust performance across a very wide effective pH spectrum, this grade provides an unrivaled solution for industries including pulp & paper, textile, petrochemical, steel, leather tanning, food & beverage, and for the treatment of complex municipal and industrial wastewater.
The decisive competitive advantage of ARNICO PAC is its stable, flawless, and robust performance over a wide operational pH range (from 5.0 to 9.0) without the need for supplementary pH-adjusting chemicals. This single attribute translates directly into the elimination of significant capital and operational expenditures (CAPEX and OPEX) related to the procurement, safe storage, handling, and injection of hazardous auxiliary chemicals such as sulfuric acid or sodium hydroxide. By eradicating these complex operational dependencies, minimizing process safety risks, and establishing a more resilient and sustainable treatment process, ARNICO PAC has definitively set a new benchmark in the water treatment chemicals industry.
Technical Specifications, Guaranteed Analysis, and Grades of ARNICO Poly Aluminium Chloride
This section presents the scientific and engineering foundation of the product. The tables below are a direct representation of ARNICO’s qualitative commitments and form the inviolable basis of the dedicated Certificate of Analysis (COA) for every single production batch. These certified figures are the primary criteria for the evaluation and formal acceptance of shipments by the nation’s leading industries and water treatment facilities. At ARNICO, quality is not a marketing slogan; it is a guaranteed, verifiable, and legally binding figure.
Table of Technical Specifications by Grade
| Parameter | Drinking Water Grade (PAC-DW) | Industrial & Wastewater Grade (PAC-IND) | Unit | Test Method |
|---|---|---|---|---|
| Appearance | Uniform Fine Powder, Light Lemon to Pale Yellow (Fine Light Yellow Powder) | Uniform Fine Powder, Dark Yellow to Brownish (Fine Dark Yellow Powder) | – | Visual Observation |
| Aluminum Oxide (Al₂O₃) | ≥ 30.0 | ≥ 28.0 | % by weight (w/w) | Complexometric Titration with EDTA |
| Basicity (OH/Al Ratio) | 70.0 – 85.0 | 40.0 – 85.0 (Customer-Specifiable) | % | Acid-Base Titration (as per DIN EN 883) |
| Water Insoluble Matter | ≤ 0.5 | ≤ 1.5 | % by weight (w/w) | Gravimetric Analysis after Membrane Filtration |
| pH (1% w/v Aqueous Solution) | 3.5 – 5.0 | 3.5 – 5.0 | – | Electrochemical pH Meter |
| Iron (Fe) | ≤ 100 | ≤ 500 | ppm (mg/kg) | Atomic Absorption Spectroscopy (AAS) |
| Total Heavy Metals (as Lead) | ≤ 10 | ≤ 50 | ppm (mg/kg) | Inductively Coupled Plasma Mass Spectrometry (ICP-MS) |
| Arsenic (As) | ≤ 2 | ≤ 10 | ppm (mg/kg) | Hydride Generation AAS (HG-AAS) |
| Bulk Density | 0.70 – 0.90 | 0.70 – 0.90 | g/cm³ | Graduated Cylinder and Precision Balance |
| Particle Size Distribution | Min 90% passing 2.0 mm sieve | Min 90% passing 3.0 mm sieve | – | Sieve Analysis |
Expert Parameter Guide (For Informed and Professional Selection)
To become a truly professional buyer and harness the maximum capabilities of the product, a precise interpretation and technical understanding of the parameters in the table above is absolutely vital. The following information will empower you to make the most optimal technical and economic decision:
Aluminum Oxide (Al₂O₃): The Beating Heart of the Product. This parameter directly signifies the weight percentage of the primary active agent in the product. This single number determines the true “titer” or strength of your PAC. A higher Al₂O₃ content equates to greater coagulating power for every kilogram you dose. In other words, to achieve a specific treated water turbidity target at the plant outlet, a higher Al₂O₃ concentration in your product directly translates to a lower required dosage rate. This leads to a direct reduction in operational chemical costs, reduced freight and delivery frequency, and a lower sludge generation burden. The guaranteed minimum of 30% for ARNICO’s Drinking Water Grade is a testament to its exceptional purity.
Basicity (OH/Al Ratio): The Mastermind and the Key to Performance. Basicity is not just a magical or purely academic number; it is the single most critical performance-defining indicator for a PAC. It represents the molar ratio of incorporated hydroxyl ions (OH⁻) to aluminum ions (Al³⁺) within the pre-formed polymeric structure. Why is basicity so important?
High Basicity (e.g., 80–85%): Indicates a high degree of polymerization, longer molecular chains, and a stronger, denser cationic charge. This translates into ultra-fast inter-particle bridging, the formation of larger and denser flocs with an exceptionally high settling velocity, and minimal residual aluminum in the clarified water. This grade is the ideal choice for treating low-turbidity waters, very cold waters, and for applications demanding the highest possible level of final clarity.
Lower Basicity (e.g., 40–50%): Characterized by shorter polymeric chains and a more dispersed cationic charge, this formulation is uniquely effective at neutralizing the strong negative surface charges found in stable oil-in-water emulsions (emulsion breaking), certain recalcitrant textile dyes, and other highly stable colloidal suspensions. The possibility of tailoring the basicity in ARNICO’s PAC-IND grade is a significant technical advantage, enabling you to perfectly align the product’s characteristics with the unique challenges of your specific wastewater.
Water Insoluble Matter: The Final Purity Index. This value represents the inert, non-functional, and undesirable fraction within the product. This material not only plays no beneficial role in the treatment process but also acts as an additional contaminant load, contributing to increased sludge volume, filter clogging, and reduced overall system efficiency. The specification of ≤ 0.5% for the Drinking Water Grade represents the highest standard of product purity and guarantees that the introduction of inert residues is virtually zero. This is a critical quality factor for sensitive applications like manufacturing high-grade paper or producing boiler feed water.
Technical, Economic, and Operational Advantages of ARNICO PAC with Proven Industrial Applications
This section goes far beyond the technical datasheet to delve into the lived, practical experience of industries using ARNICO PAC. The competitive advantages detailed herein are not merely theoretical but are based on direct feedback from water and wastewater treatment plants and factories that have fundamentally transformed their operational efficiency and output quality with this product.
Key Advantages: Why is ARNICO PAC the Superior Choice?
1. Guaranteed Performance Across a Wide pH Spectrum (5.0–9.0) and Freedom from pH Correctors:
The heavy dependence of Alum on a very narrow, near-neutral pH range is a historic and costly weakness. Any minor fluctuation in raw water quality, especially during rainfall events or seasonal turnover in a reservoir, shifts the pH and can almost paralyze Alum’s effectiveness. Operators are then forced into a reactive and constant battle of injecting acid or caustic soda to correct the pH. ARNICO PAC has permanently solved this chronic problem. Its pre-hydrolyzed nature allows it to operate at its maximum potential in both mildly acidic and mildly alkaline environments. The direct, quantifiable result of this is the complete elimination of the procurement, installation, maintenance, and operational costs of injecting hazardous chemicals (like sulfuric acid and sodium hydroxide), the removal of associated personnel safety risks and equipment corrosion, and the eradication of human calculation and dosing errors.
2. Ultra-Fast Coagulation and Flocculation Kinetics and a Drastic Reduction in Hydraulic Retention Time (HRT):
The moment ARNICO PAC is injected into the water stream, its long, pre-activated polymer chains act like the tentacles of a giant, multi-armed creature, trapping numerous fine, suspended colloidal particles within fractions of a second and binding them together through a powerful bridging mechanism. This process is dramatically faster than the slow, gradual, and often incomplete in-situ hydrolysis of Alum. The resulting flocs are significantly larger, denser, and heavier (Heavy & Dense Flocs), exhibiting a settling velocity that is 2 to 3 times greater than the light, gelatinous, and watery flocs formed by Alum. What does this mean in practice? It means increasing the throughput capacity of your existing treatment plant without any expenditure on new construction. You can safely pass a higher instantaneous flow rate through the system or, with complete confidence, significantly reduce the hydraulic loading on downstream sand filters, thereby extending their filter run times and service life.
3. A 20% to 40% Reduction in Sludge Volume and Exorbitant Disposal Costs:
The sludge produced with PAC, owing to its high density, entrains significantly less free water within its structure. Simply put, PAC sludge is a dense, highly compacted, and drier sludge, not a bulky, watery one. This means the final volume of sludge that must be periodically withdrawn from settling basins, transported off-site, and landfilled is 20% to 40% less than the volume generated with Alum. This reduction in sludge volume directly translates to less frequent sludge wasting, a reduction in the volume of backwash water required for filters, lower transportation and disposal costs, and, critically, higher throughput and reduced cationic polyelectrolyte consumption in downstream mechanical dewatering equipment (such as filter presses, belt presses, and centrifuges). This chain of savings constitutes a staggering economic advantage for any industrial operation.
4. Unwavering Efficiency in Cold Waters and Winter Conditions:
The drastic drop in Alum’s coagulation efficiency at water temperatures below 10–15°C is a globally recognized technical weakness. The cold temperature severely retards the kinetics of the hydrolysis reaction, rendering Alum virtually ineffective and causing a significant deterioration in final water quality. Since ARNICO PAC does not require in-situ hydrolysis, its floc formation kinetics are practically independent of water temperature. You can thus achieve the same excellent treated water quality on the coldest days of winter using the same dosage rate as in summer, giving you complete peace of mind about the stable and consistent performance of your treatment plant year-round.
5. Minimal Secondary Salinity Contribution and Non-Corrosive Nature (A Decisive Advantage over Ferric Chloride):
Ferric Chloride (FeCl₃), despite its deceptively lower upfront unit cost, introduces a massive load of aggressive chloride ions (Cl⁻) into the water matrix. This causes a sharp increase in the Total Dissolved Solids (TDS), a spike in electrical conductivity (EC), and elevated secondary salinity in the treated effluent. The severe consequences of this are aggressive and progressive corrosion throughout metallic infrastructure (piping, pumps, and valves) and concrete structures, as well as significant limitations on the ability to recycle or reuse treated wastewater. ARNICO PAC introduces a far lower concentration of free chloride anions into the environment, making it a demonstrably safer choice for your physical assets and the environment.
Specialized and Proven Fields of Application:
Municipal, Rural & Industrial Drinking Water Treatment Plants:
Superb clarification and removal of both high and low levels of turbidity from surface water sources (rivers, reservoirs, and irrigation canals).
Highly efficient removal of color, unpleasant taste, and odor-causing compounds generated by seasonal algal blooms and decaying organic matter.
Significant reduction of Natural Organic Matter (NOM), the primary precursors for harmful and potentially carcinogenic Disinfection By-Products (DBPs) like Trihalomethanes (THMs) and Haloacetic Acids (HAAs).
Effective removal of heavy metals and reduction of soluble iron and manganese from groundwater sources.
Pulp and Paper Industry:
A powerful Retention and Drainage Aid (R&A Agent) that increases the retention of cellulosic fibers, mineral fillers (like Calcium Carbonate), and sizing agents within the paper sheet. This leads directly to lower raw material consumption, improved paper physical properties (like tensile and burst strength), and reduced pollutant load in the mill’s effluent.
Textile, Dyeing, and Printing Industry:
Treatment of highly colored wastewater with extreme COD and BOD loads, achieving complete removal of recalcitrant chemical dyestuffs, including reactive, disperse, vat, and sulfur dyes.
Reduction of turbidity, Total Suspended Solids (TSS), and Total Dissolved Solids (TDS) down to levels compliant with strict environmental discharge standards.
Treatment of Highly Complex Industrial Effluents:
Oil, Gas, & Petrochemicals: Efficient breaking of stable oil-in-water emulsions and separation of free and emulsified hydrocarbon phases from process water (using API/CPI separators).
Metal Finishing & Electroplating: Extremely effective precipitation and removal of heavy metal ions (Cr⁶⁺, Ni²⁺, Zn²⁺, Cu²⁺, Pb²⁺) as part of a comprehensive neutralization and clarification process.
Food & Beverage (Dairy, Slaughterhouse, etc.): Breaking stable fat, oil, and grease (FOG) and protein emulsions, effectively removing TSS, and significantly reducing organic loading prior to biological treatment units.
Leather Tanning: Efficient treatment of the extraordinarily polluted waste streams containing sulfides, chromium, lime, and high concentrations of organic matter.
Mining and Mineral Processing:
Aids in the rapid settling of fine mineral tailings, washing of ore concentrates, and the recovery of process water from thickeners and clarifiers for recirculation.
Safety, Health, and Sustainability; The Foundation of ARNICO’s Commitment and the Guarantee of a Reliable Partnership
This section is dedicated to the two foundational pillars of ARNICO’s commitment to its customers: first, complete transparency and the provision of practical, actionable guidance for preserving the health and safety of personnel and the work environment; and second, an exposition of our integrated quality assurance system and technical services that elevate ARNICO’s product from a mere chemical supply to a holistic engineering solution and a trusted, long-term technical partnership.
Comprehensive Safety, Handling, and Storage Guide
ARNICO Poly Aluminium Chloride is an acidic substance with mild to moderate corrosive properties. Its fine powder form and hygroscopic nature require the strict, integrated observance of safety principles to ensure the well-being of personnel and the long-term stability of the product. Awareness of and compliance with the following is mandatory for all users:
Mandatory Personal Protective Equipment (PPE): Before any handling or contact with the product, the use of this defensive layer is non-negotiable and vital:
Gloves: Long-sleeved, chemically resistant gloves made of neoprene or nitrile material.
Eye and Face Protection: Full-seal chemical safety goggles (Goggles) or a clear face shield to protect against any possible airborne powder dust or liquid splashes.
Body Protection: Full-length, long-sleeved, acid-resistant work clothing or coveralls.
Respiratory Protection: A standard, approved, and properly fitted particulate-filtering respirator mask (such as P2/N95 grade) to prevent the inhalation of irritating powder dust when opening or emptying bags.
Emergency Procedures and First Aid Measures:
On Skin: Immediately remove all contaminated clothing. Continuously flush the affected skin area with plenty of clean water and mild soap for a minimum of 20 minutes.
In Eyes: Immediately rinse the eyes thoroughly. Hold eyelids open with fingers and gently but continuously flush with lukewarm, low-pressure water for at least 15 minutes. Remove contact lenses if present and easy to do. Avoid rubbing the eyes. In all cases of eye contact, an immediate and urgent visit to a specialized ophthalmologist is mandatory.
Inhalation: Immediately move the affected person into fresh, open air. Place them in a comfortable seated position. If persistent coughing or breathing difficulty occurs, seek immediate medical attention.
Accidental Ingestion: Rinse the mouth thoroughly with plenty of water. If the person is fully conscious and alert, give them small amounts of water or milk to drink. NEVER attempt to induce vomiting and call emergency medical services immediately.
Golden Rules for Optimal Storage:
ARNICO PAC is strongly hygroscopic (moisture-absorbing) . Failure to reseal packaging will rapidly result in product caking, loss of solubility, and product wastage.
Store in a strictly dry, covered, cool warehouse environment (with an ambient temperature below 40 °C) with adequate air ventilation.
Keep the product away from direct sunlight, all sources of heat, rain, and high humidity environments.
It is an absolute necessity to completely and tightly reseal the tops of bags or bulk FIBCs (Jumbo Bags) immediately after each use, utilizing plastic cable ties or specialized sealing straps.
This product must be stored isolated from incompatible materials, including strong alkalis (caustic soda flakes, lime), concentrated mineral acids, and strong oxidizing agents.
Safety Data Sheet (SDS): The complete and official Safety Data Sheet, compliant with the Globally Harmonized System (GHS) including all 16 standard sections (hazard identification, composition, first-aid measures, fire-fighting measures, exposure controls, physical and chemical properties, stability and reactivity, toxicological and ecological information, disposal considerations, etc.), is always available for download on the official ARNICO website. It is a legal and professional imperative that all site employers and safety officers study this document thoroughly and make it accessible to all relevant personnel.
ARNICO’s Quality Assurance System and Technical Services; Beyond Being Just a Supplier
Quality assurance at ARNICO is a closed-loop, complete lifecycle process that spans from the raw mineral mine to your treatment facility:
Guaranteed Certificate of Analysis (COA): Every consignment of an ARNICO product is delivered with its own unique, batch-specific COA. This certificate is a living, legally valid document containing the real-world results of laboratory analyses performed on samples drawn from that specific production batch, guaranteeing the product’s full and demonstrated conformity to the declared technical specifications.
Expert On-Site Technical and Engineering Services: Our team of experienced field application specialists and technical experts will serve as your dedicated engineering arm, providing invaluable support such as:
Specialized Jar Testing: The scientific and empirical determination of the optimal product grade, ideal coagulant dosage, and perfect process conditions (rapid mix, slow mix, settling) using representative samples of your actual raw water or wastewater.
Process Engineering Consultancy: Comprehensive troubleshooting and optimization of your treatment units, recommending the most effective chemical injection points, and assisting in the design and selection of an appropriate chemical make-down and dosing system.
Periodic Site Visits and Continuous Performance Monitoring: Ensuring the long-term, stable performance of the product and proactively adapting the treatment protocol to align with seasonal variations in raw water quality.
For more information, to request a free expert technical consultation, to ask for a sample COA, or to place an order, please visit the ARNICO website and contact our commercial and technical specialists. ARNICO: Your Trusted Partner for Clarity and Sustainable Quality.
Technical documents for Polyaluminum Chloride products, including Technical Data Sheet (TDS), Material Safety Data Sheet (MSDS), and Certificate of Analysis (COA), are available to customers upon request.
To receive these documents and additional information, please contact the company’s technical or sales department or contact us via email.
Commitment to Arnico quality; production cycle Polyaluminum chloride
Trust of Major Industries in Arnico
Stable supply and strong logistics chain
With Arnico, production stoppages are a thing of the past. Our global supply network and strategic warehouses ensure that your raw materials are supplied on time and without interruption, even amidst market fluctuations.
Quality assurance with a valid Certificate of Analysis (COA)
Every shipment of Arnico is shipped with a dedicated analysis sheet. Ensure full compliance with international standards before unloading. Our transparency is your peace of mind.
Transparent pricing and elimination of unnecessary intermediaries
Direct sourcing and eliminating intermediaries has brought our prices closer to global rates. With Arniko, you will experience smart, economical, and completely transparent shopping.
Specialized technical advice; beyond a supplier
Arnico’s technical team is by your side before you make a purchase. From selecting the right grade to sample analysis, our detailed, complimentary consultation guides you toward the best decision. Arniko—your technical partner on the path to growth.
Quick Guide to Buying Polyaluminum Chloride
What is the minimum order quantity (MOQ)? Is it possible to make a trial purchase?
What documents and certificates do you provide to ensure quality?
Arnico provides the following complete package of documents for each shipment:Certificate of Analysis (COA)from a National Standards Organization accredited laboratory
Commercial with full specificationsISO 9001:2015 certificate (quality management) and ISO 14001 (environmental management)
NSF/ANSI 60 approval for food grade (suitable for drinking water)
SGS or Bureau Veritas inspection certificate can also be provided upon request All these documents will be provided to the buyer for final approval before loading, and in case of non-compliance, the buyer has the right to cancel.
What are the payment methods and transaction guarantees for foreign buyers?
What is the delivery time and shipping cost to different destinations?
The order delivery time is as follows:
Stock orders: Maximum 5 to 7 business days after receiving the advance payment
Production orders (custom): Maximum 15 to 21 business days
Sea export: Depending on Destination, 20 to 45 days plus shipping time
Shipping cost is calculated in two ways:
FOB (port of origin): includes product price + loading in Bandar Abbas, Asaluyeh or Imam Khomeini
CIF (port of destination): includes cost price + sea freight + insurance to port of destination
Arnico Logistics Team cooperates with 3 reputable international shipping companies and calculates the best rates for neighboring countries, Central Asia, Africa, Europe and China. Also, the exact production and shipping schedule is announced to the buyer on a weekly basis so that the purchasing planning process is completely transparent.
We are answering your questions.
Your satisfaction is our credit.
Our support team, consisting of experienced experts, is ready to answer your questions and challenges in the shortest possible time. Our goal is to provide you with a precise and practical solution.