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High-Purity Industrial & Water Treatment Coagulants Engineered for Global Applications | Shandong Pulisi Chemical Co., Ltd. (Stock Code: 307785)

Technical Deep-Dive: Aluminum Sulphate Flocculants & Industrial Formulations

An exhaustive whitepaper on the chemical thermodynamics, performance parameters, and industrial customization of Al2(SO4)3.

1. Introduction and Chemical Specifications

Aluminum Sulphate ($Al_2(SO_4)_3$, CAS Registry Number 10043-01-3), commonly known as papermaker's alum or filter alum, is a critically important chemical compound utilized globally. Depending on its hydration state, it typically manifests as a crystalline solid or white powder, or as a liquid solution when dissolved in water.

Its industrial-grade forms are categorized by their iron content: Iron-Free Aluminum Sulphate (containing less than 0.005% $Fe_2O_3$) and Low-Iron/Industrial Aluminum Sulphate (containing up to 0.50% $Fe_2O_3$). The chemical efficiency of Aluminum Sulphate depends primarily on its active alumina ($Al_2O_3$) concentration, which governs its capacity for charge neutralization and sweep coagulation when dissolved.

Property Parameter Iron-Free Solid Grade Liquid Industrial Grade Test Standard Compliance
Alumina ($Al_2O_3$) Content ≥ 17.00 % ≥ 8.00 % GB/T 1893-2008 / AWWA B403
Iron ($Fe$) Content ≤ 0.005 % ≤ 0.20 % ICP-OES analysis
Water Insoluble Matter ≤ 0.15 % ≤ 0.20 % Gravimetric Method
pH Value (1% aqueous solution) ≥ 3.0 ≥ 2.5 Electrometric method
Heavy Metals ($Pb$) ≤ 0.001 % ≤ 0.002 % US Food Chemicals Codex (FCC)

2. Localized Application Scenarios

Aluminum Sulphate is formulated to serve diverse localized municipal and industrial requirements:

  • Municipal Potable Water Treatment: In water treatment, Al2(SO4)3 hydrolyzes to form polymeric aluminum hydroxide clusters like $[Al_8(OH)_{20}]^{4+}$. These positively charged complexes neutralize the negative charge of suspended colloidal particles, facilitating rapid flocculation and sedimentation.
  • Pulp and Paper Manufacturing: Serving as a sizing agent, Aluminum Sulphate interacts with rosin sizes to render paper water-resistant. It also functions as a retention and drainage aid, improving fiber recovery and overall paper runnability.
  • Agricultural Soil Modification: In alkaline soil profiles, the hydrolysis of Aluminum Sulphate releases hydrogen ions ($H^+$), lowering soil pH to make essential micronutrients more bioavailable for acid-loving crops.
  • Construction Materials: It acts as a setting accelerator in concrete and plaster formulations, modifying the hydration kinetics of tricalcium silicate ($C_3S$) to speed up early-stage setting and drying.

3. Technical Roadmap & Future Outlook

The future production of Aluminum Sulphate centers on green chemistry and circular economics:

  • Sustainable Sourcing: The industry is transitioning from virgin mineral mining to extracting raw materials from industrial byproducts, using high-purity recycled alumina sources to minimize mining impacts.
  • Intelligent Coagulation Systems: Real-time dosing optimization uses AI-driven sensors to monitor pH, turbidity, and temperature, adjusting Aluminum Sulphate concentration to maximize efficiency and prevent residual aluminum carryover.
  • Hybrid Formulations: Manufacturers are blending Aluminum Sulphate with organic polymers and polyaluminum chlorides (PAC) to produce hybrid coagulants that function across broader pH ranges and temperatures.

About Shandong Pulisi Chemical Co., Ltd.

Established in 2006 (Stock Code: 307785) — A Global Industrial Partner for Strategic Chemical Supply.

Shandong Pulisi Chemical Facility Overview

Pioneering Chemical Synthesis & Distribution

Shandong Pulisi Chemical Co., Ltd. was established in 2006 (Stock Code: 307785). The company focuses on petrochemicals, mining chemicals, feed chemicals, and pharmaceutical chemicals. At present, the company has established long-term and stable partnerships with Fortune Global 500 companies such as China National Petroleum Corporation and Saint-Gobain. We always take customer demand as the core orientation and provide tailored solutions to help customers strengthen their market competitiveness.

The company has passed ISO9001:2015 Quality Management System Certification and German BV Certification, and has been awarded multiple honors such as Foreign-Oriented Economic Enterprise, Alibaba Demonstration Base, and Contribution Enterprise. In 2023, the company successfully went public with stock code: 307785.

The company upholds the corporate culture philosophy of "Customer First, Rapid Response; Striving as the Foundation, Efficient Collaboration; Integrity and Uprightness, Agile Adaptation." We focus on providing compliant and high-quality products and supporting services, and are committed to becoming a long-term and stable partner for customers.

2006 Established Year
20+ Years Experience
100+ Export Countries
1,000+ Partner Companies

Shandong Pulisi Chemical has established mature warehousing and distribution systems at key logistics hubs, including Qingdao Port, Tianjin Port, and Xinjiang border ports (Alashankou, Khorgos). We are able to provide flexible supply solutions according to customer needs to ensure timely order delivery. No matter where customers are located, Shandong Pulisi Chemical will safeguard their business development with professional service systems and efficient response capabilities.

Strict Statement: Shandong Pulisi has not established branches outside of Shandong Province. If there is any act of impersonating Shandong Pulisi, our company will reserve the right to pursue legal responsibilities.

Supply Chain Resilience & Infrastructure

Leveraging geographical positioning, industrial clusters, and intelligent logistics to deliver consistent chemical solutions globally.

Integrated Production Complexes

Direct proximity to bauxite extraction sites and sulfuric acid industrial zones, ensuring a reliable supply of raw materials and stable pricing.

Strategic Port Warehouses

Large-scale stockpiling facilities at Qingdao and Tianjin ports reduce inland transit delays, enabling fast dispatch and vessel loading.

Multimodal Inland Routes

Border port access at Alashankou and Khorgos supports overland rail transport to Central Asia and Europe, ensuring supply chain continuity.

Global Compliance Standards

Comprehensive registration alignment, including REACH, K-REACH, FAMI-QS, Halal, Kosher, and SGS audits, for seamless regulatory import clearance.

Company Honors & Quality Certifications

Our quality system is verified by international inspection bodies and regional regulatory agencies.

山东普利斯ISO中英文证书--有效期至2028.12.8_02

ISO Quality Management Certificate

FAM-1134

FAM-1134

Kosher Certificate

Kosher Certificate

Halal Certificate

Halal Certificate

ISO 9001 Certificate

ISO 9001 Certificate

Acetic Acid SGS

Acetic Acid SGS

Calcium Formate SGS

Calcium Formate SGS

Formic Acid SGS

Formic Acid SGS

SGS Certification Doc

ISO Compliance Standard

Oxalic Acid SGS

Oxalic Acid SGS

Sodium Formate SGS

Sodium Formate SGS

Sodium Hydrosulfide SGS

Sodium Hydrosulfide SGS

Component Certification

Component Certification

Company Honor 1
Company Honor 2
Company Honor 3

Global Chemical Trade Exhibitions

Collaborating with worldwide partners to drive quality standards and technological innovation in industrial chemistry.

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Product Application Fields

Our solutions support water treatment, drilling, construction, and agricultural processes worldwide.

Chemicals For Textile, Printing & Dyeing & Leather

Agricultural Chemicals, Food And Feed Additives

Chemicals For Construction And Coatings

Chemicals For Mining

Chemicals For Oil Drilling

Disinfectant And Solvent Chemicals

Chemicals For Water Treatment

Plastic Raw Material

Why Choose Shandong Pulisi Chemical

Operational stability, certified quality standards, and deep technical expertise.

Export Capacity

Exporting to more than 100 countries and regions with comprehensive customs clearing efficiency.

Professional & Experienced

More than 20+ years of export experience, maintaining active partnerships with over 1,000 global companies.

Quality Assurance

ISO Certification, SGS audits, K-REACH verification, and FAMI-QS conformity frameworks.

Reasonable Pricing

Competitive pricing structures based on specific compound customization and grade requirements.

Fast Logistics Delivery

Large port-side warehouses support rapid transit, minimizing dispatch lead times.

Warm Service

An experienced sales and technical support team handles post-sale follow-up and process integration.

Pulisi facility warehouse
Pulisi logistics processing
Pulisi laboratory testing
Pulisi industrial shipping

Global Enterprise Partners

Building long-term supply relationships with international manufacturers and distributors.

Frequently Asked Questions

Find answers to common questions about our technical specifications, ordering processes, and shipping terms.

Is it possible to print our logo on the product?
Of course you can. Just send us your logo design and we will customize the packaging to meet your requirements.
Do you accept small orders?
If you are a small retailer or entrepreneur, we would absolutely love to grow with you. We look forward to building a long-term relationship with you.
What is the price? Can it be cheaper?
We always put our customers' interests first. Prices are negotiable under different conditions, and we guarantee that you will get the most competitive price.
Do you provide free samples?
Yes, we provide free samples for quality evaluation. Please contact our sales team to coordinate shipping details.
Can you deliver on time?
Yes, of course! We have specialized in this field for many years. Our customers partner with us because we deliver on time and guarantee top-quality goods.
What are your payment terms? Do you accept third party payment?
We accept T/T, L/C, D/P, and O/A payment methods. We also support standard third-party trade guarantees.
Can I visit your factory in China?
Of course, you are very welcome to visit our company in Zibo, China (a 1.5-hour drive from Jinan Airport). We will assist with logistics and accommodation.
How can I place an order?
You can send an inquiry directly to our sales representative via email or our website. We will explain the process and prepare the required documents.
What is the difference between Iron-Free and Industrial Grade Aluminum Sulphate?
The main difference is the iron content ($Fe_2O_3$). Iron-Free Aluminum Sulphate has less than 0.005% iron, making it suitable for high-grade paper production and municipal drinking water treatment. Industrial grade typically contains up to 0.5% iron and is used for industrial wastewater treatment and soil modification.
What is the optimal pH range for Aluminum Sulphate in water treatment?
The optimal pH range is typically 5.5 to 7.5. Outside this range, the solubility of aluminum hydroxide increases, reducing coagulation efficiency and potentially leaving residual aluminum ions in the treated water.
How does Shandong Pulisi ensure heavy metal safety in municipal water treatment compounds?
We conduct strict raw material selection and batch testing. Our products comply with NSF/ANSI 60 and AWWA B403 standards, keeping lead, arsenic, and cadmium levels well below international regulatory limits.