Aluminum (III) Sulfate (chemical formula: Al2(SO4)3), commonly called alum or paper maker's alum, is a critically important industrial chemical. In aqueous solutions, it operates as a source of trivalent aluminum ions (Al3+). These ions are highly effective at neutralizing negative surface charges on suspended colloidal particles, which facilitates rapid coagulation and flocculation.
At Smedic Technology Co., Ltd., we use advanced synthesis pathways to produce high-purity Aluminum III Sulfate with minimal iron contamination. In water purification, the hydrolysis of Al3+ produces polymeric aluminum hydroxide complexes. These complexes act as chemical bridges that sweep through the water, capturing organic compounds, heavy metals, suspended solids, and dissolved phosphorus to form large, easily filterable flocs.
The efficiency of coagulation relies on the rapid formation of aquo-complexes like [Al(H2O)6]3+. These complexes undergo hydrolysis to generate multinuclear hydroxo-species. By maintaining precise control over the raw material ratio and crystallization temperature, Smedic ensures that each batch delivers optimal charge neutralization performance across a wide range of water temperatures and pH levels.
We maintain a minimum alumina content of 15.8% to 17% in our solid flakes and powder formulations. This high concentration ensures that you get maximum coagulation performance per unit weight, which helps minimize shipping and storage costs.
For sensitive applications like pulp & paper manufacturing and high-clarity water treatment, we offer an iron-free grade with a maximum Fe concentration of 0.005%. This prevents yellowing and staining in finished products.
Our filtration processes keep water-insoluble matter below 0.1%. This low level of insolubles prevents dosing pumps from clogging, reduces pipe wear, and minimizes downstream maintenance for water treatment utilities.
Smedic's chemical products comply with international standards, including NSF/ANSI Standard 60, AWWA B403-16, and EN 878. These certifications ensure that our products are safe for treating drinking water and processing food.
Securing a reliable supply of industrial chemicals is a key priority for procurement managers worldwide. Aluminum III Sulfate requires careful handling, protective storage, and reliable transport infrastructure to maintain its quality during transit.
Smedic addresses these needs through an integrated production and distribution network. Our corporate headquarters is in Beijing, and we operate wholly-owned production bases in Hebei, Guizhou, and Shanxi. By maintaining partnerships with over ten OEM factories and regional warehouses in provinces like Shandong, Anhui, Guangxi, and Sichuan, we can adapt our logistics routes to minimize shipping times and costs.
Established in 2011, Smedic Technology Co., Ltd. has developed into a comprehensive environmental chemical supplier. We integrate advanced R&D, smart manufacturing, and technical field services to support municipal wastewater plants, industrial factories, and mineral processing facilities worldwide.
Smedic is recognized as a National High-tech Enterprise and a "Little Giant" enterprise in China. These designations highlight our commitment to developing innovative water purification chemicals. Our R&D network is built around a centralized technology platform, supported by three research institutes and five production bases.
We work closely with leading academic institutions to develop new products. We run a joint expert workstation with the Tsinghua University Association of Senior Scientists and Technicians, and have set up joint laboratories with Shandong University and the Beijing University of Technology. We also help commercialize research from Peking University and Tianjin University.
Our research has produced advanced formulas like our patented inorganic-organic covalent bond flocculants. These complex molecules combine the rapid charge neutralization of inorganic alum with the strong particle-bridging capability of organic polymers. This hybrid approach helps reduce chemical consumption and minimizes sludge volume.
Our facilities maintain ISO 9001, ISO 14001, and ISO 45001 certifications. We hold more than 60 patents and have led the drafting of over 10 national and industry standards.
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