Product identity and grade
State the exact identity, form, concentration, water application, quantity, packing, destination and documents.
Water treatment chemical · Inorganic coagulant
Alum (Aluminum Sulfate) for Water Treatment
Alum is a commercial term often used for hydrated aluminum sulfate in water treatment, but it can also describe double sulfates; buyers should define the exact identity and aluminum basis.
- Identity
- Term may indicate hydrated aluminum sulfate or a double sulfate
- Form
- Exact hydrate, solution and aluminum basis required
- Use basis
- System and jurisdiction specific
- Specification
- Contact sales
Product image · confirm grade and packaging when ordering
Share exact identity, form, water application, quantity, destination and document requirements.
ApplicationWater-system specific
SpecificationAvailable privately from sales
ValidationBench and system testing required
ComplianceExact use and market specific
Direct product answer
What is Alum (Aluminum Sulfate) for water treatment?
Alum is a commercial term often used for hydrated aluminum sulfate in water treatment, but it can also describe double sulfates; buyers should define the exact identity and aluminum basis.
Selection depends on the exact commercial form, incoming-water chemistry, process objectives, treatment train, materials of construction, residual limits, operator controls and jurisdiction. This page supports procurement qualification and is not a dosing instruction.
Choose the right product record: This page helps resolve the commercial name “alum”. If your requirement already specifies aluminum sulfate, use the aluminum sulfate product page to align chemical identity and quotation requirements. The name alum alone does not establish an interchangeable grade.
Procurement snapshot
- Product
- Alum (Aluminum Sulfate)
- Category
- Inorganic coagulant
- Identity
- Term may indicate hydrated aluminum sulfate or a double sulfate
- Form
- Exact hydrate, solution and aluminum basis required
- Use review
- Water, system and market specific
- Product specification
- Request the offered grade’s specification
Procurement checklist
How to source Alum (Aluminum Sulfate) in bulk
Use these procurement questions when comparing a China supplier, manufacturer source, distributor, sample or bulk quotation.
Quotation and delivery basis
Compare source-specific specification, concentration basis, packing, transport classification, Incoterm and delivery.
Application and process requirements
Share water analysis, process objective, materials, operating envelope, discharge limits and validation plan.
Technical and quality documents
Request current SDS, specification or TDS, representative COA, batch COA, traceability and applicable certification.
Application screening
Alum (Aluminum Sulfate) water-treatment application guide
These are technical screening areas—not universal approvals, operating directions, efficacy claims or guaranteed outcomes.
Drinking-water coagulation where approved
Qualify the exact grade using representative source water. Compare settled and filtered turbidity, residual metal or polymer requirements and the applicable product certification; include seasonal water changes in the trial plan.
Municipal and industrial wastewater clarification
Use samples that represent changes in suspended solids, pH and organic load. Compare clarification and downstream separation with the current treatment, and record sludge production as well as chemical consumption.
Phosphorus-removal treatment trains
Define the phosphorus target and the treatment stage before screening a grade. Measure phosphorus after the actual solids-separation step and assess pH, residual metal and additional sludge together.
Sludge dewatering and process-water clarification
Screen the grade with the actual sludge or suspended solids and the intended separation equipment. Record capture, cake or settled-solids properties, filtrate quality and compatibility with the existing polymer program.
Technical selection
Questions to resolve before approving Alum (Aluminum Sulfate)
Exact alum identity, hydrate and CAS
Specify aluminum sulfate and its hydration or solution form on the order. The word alum alone can also refer to other salts, so compare the chemical name and CAS on the specification and SDS.
Liquid or solid form and aluminum basis
Compare quotes on the same aluminum or Al2O3 basis. A price per tonne of solution cannot be compared directly with a dry product without accounting for concentration and delivery form.
Basicity, free acid and insoluble matter
Request the free-acid and insoluble-matter limits and their test methods. If basicity is reported, establish its definition rather than applying a PAC specification to aluminum sulfate.
Jar testing, residual aluminum and certification
Run a jar test using representative raw water and the plant's mixing and separation conditions. Check residual aluminum alongside turbidity and require the actual product's certification for potable-water use.
Private technical documentation
Request the current Alum (Aluminum Sulfate) product specification
Bespring Chemical does not publish product specifications for this water-treatment chemical online. Contact sales for the current source-specific specification or TDS and confirm its revision, methods and acceptance criteria.
Product documents
Request the current signed specification or TDS, SDS, analytical methods, representative COA and batch COA.
Safety and logistics
Confirm classification, UN transport information where applicable, compatible packing, storage segregation, shelf life and emergency controls.
Authoritative context
Review US EPA drinking-water regulations, WHO Guidelines for Drinking-water Quality and NIH PubChem. Final approval depends on the exact product, water application and jurisdiction.
Water-use note: A raw-material identity does not establish potable-water approval, disinfectant efficacy or a safe universal dose. Treatment must be designed and validated from water data, monitored for relevant residuals and by-products, and operated under applicable product approvals and regulations.
Storage and handling
Handle Alum (Aluminum Sulfate) under the current SDS
- Source instructionsFollow the current SDS and specification for temperature, ventilation, segregation and shelf life.
- IncompatibilitiesPrevent contact with incompatible chemicals, moisture, heat or contamination as identified for the exact product.
- Engineered controlsUse suitable closed handling, ventilation, containment, PPE, labeling and trained emergency procedures.
Water-treatment buyer questions
Alum (Aluminum Sulfate) FAQ
What is Alum (Aluminum Sulfate) used for in water treatment?
Alum is a commercial term often used for hydrated aluminum sulfate in water treatment, but it can also describe double sulfates; buyers should define the exact identity and aluminum basis. Suitability must be established for the exact treatment system and intended water use.
Which Alum (Aluminum Sulfate) identity should buyers specify?
Term may indicate hydrated aluminum sulfate or a double sulfate; Exact hydrate, solution and aluminum basis required. State the exact commercial form, concentration, grade and source-specific requirements.
Why is there no public specification?
Bespring Chemical does not publish specifications for this water-treatment chemical online. Contact sales for the current source-specific specification or TDS, methods and representative COA.
Can Alum (Aluminum Sulfate) be used for drinking-water treatment?
Only where the exact product is approved or certified for that application and the treatment is designed, validated, monitored and operated under applicable rules. This raw-material page does not establish potable-water approval.
What should the RFQ include?
Provide the exact identity, form or concentration, water application, source-water or system data, critical limits, quantity, packing, destination, documents, Incoterm and delivery date.
Content updated 2026-09-13.
Related sourcing
Related water-treatment chemicals and guides
Water Treatment Directory
Browse disinfectants, corrosion-control chemicals, coagulants and treatment auxiliaries.
Contact the Sales Team
Discuss a private specification, documents, sample and commercial requirements.
Supply Services
Review sourcing and export support for international chemical procurement.
Application and selection guides: Industrial Wastewater Coagulant Selection; Raw Water Coagulant Selection & Jar Testing. Use the guides for process questions; confirm the exact supplied grade separately.
Specification-led chemical sourcing
Request a Alum (Aluminum Sulfate) specification and quote
Share identity, form or concentration, water application, water or system data, critical limits, quantity, packing, destination and document list.
- Current private specification or TDS
- Representative and batch COA
- SDS, packing and transport confirmation
- Source-specific documents on request
Product documents
Request documents
Tell us your grade and destination market so we can confirm which documents are available for your order.
An external reference is not a batch certificate or a Bespring product specification.