Chemical laboratory

Aluminum Sulfate

Industrial-Grade Coagulant for Water Treatment Applications

  • CAS 10043-01-3
  • Formula Al₂ (SO₄)₃
  • Flash Pt N/A °C
  • Density 2.672 g/cm³
Shop Product Download SDS

Physical & Chemical Properties

Property Value Unit
Boiling point N/A (decomposes) °C
Flash point N/A °C
Density 2.672 g/cm³ g/cm³
Solubility 36.4 g/100 mL (0 °C); 36.4 g/100 mL (20 °C) -
Ph 2.5-3.5 (1% solution) -
Molecular weight 342.15 g/mol g/mol
Melting point N/A °C
Vapor pressure N/A mmHg
Autoignition temp N/A -
Appearance White crystalline solid -
Odor Odorless -
Vapor density N/A g/cm³

Overview

Aluminum sulfate (Al₂(SO₄)₃) is a white, odorless crystalline solid widely recognized as one of the most effective coagulants in water treatment processes. With a molecular weight of 342.15 g/mol and excellent water solubility, this versatile chemical compound serves critical functions across multiple industries, from municipal water purification to paper manufacturing and textile processing.

Key Applications

  • Water Treatment Coagulant: Primary use in municipal and industrial water treatment facilities to remove suspended particles, turbidity, and contaminants through flocculation processes
  • Paper Manufacturing: Essential sizing agent that improves paper quality by controlling ink absorption and enhancing printability
  • Textile & Dyeing Operations: Functions as a mordant to improve dye adhesion and color fastness in fabric processing
  • pH Control Systems: Effective acidifying agent with a pH of 2.5-3.5 in 1% solution for various industrial processes

Safety & Handling

Aluminum sulfate is non-flammable with no flash point or autoignition temperature. However, proper personal protective equipment including safety glasses, gloves, and dust masks should be worn when handling to prevent skin and respiratory irritation. Ensure adequate ventilation in work areas, especially when handling large quantities. The compound's acidic nature requires careful handling to avoid contact with skin and eyes. Always consult the Safety Data Sheet for complete handling procedures.

Storage & Shelf Life

Store in a cool, dry location in tightly sealed containers to prevent moisture absorption and caking. Recommended storage temperature is ambient room temperature. Keep away from strong bases and metals that may cause incompatible reactions. When stored properly in original packaging, aluminum sulfate maintains its effectiveness indefinitely. Use moisture-resistant containers and ensure proper labeling for workplace safety compliance.

Why Alliance Chemical

Alliance Chemical provides high-quality Aluminum Sulfate with reliable same-day shipping from our Taylor, Texas facility. We offer flexible shipping options including UPS for smaller quantities and LTL/FTL freight for bulk orders. Every shipment includes comprehensive Safety Data Sheets (SDS) and Certificates of Analysis (COA) to ensure compliance and quality assurance for your operations.

Shipping & Availability

Parcel Shipping

UPS Ground supports pints, quarts, and most 1-gallon packages nationwide.

LTL Freight

5-gallon pails, drums, and totes move via LTL carriers such as ABF Freight, SEFL, Saia, and XPO.

Full Truckload

FTL available for palletized bulk orders. Competitive freight rates.

Local Pickup

Same-day pickup at our Taylor, TX warehouse for Texas customers.

SDS, COA, and TDS available for every product • Same-day shipping on orders before 1 PM CT

Frequently Asked Questions

What is aluminum sulfate (Al2(SO4)3) and what is it used for?
Aluminum sulfate (CAS 10043-01-3, Al2(SO4)3) is an inorganic salt commonly supplied as an aqueous solution and used industrially as a coagulant/flocculant in water and wastewater treatment, in pulp and paper processes, textile dyeing, and as a laboratory reagent.
How should a 50% aluminum sulfate solution be stored and what is its shelf life?
Store in a cool, dry, well‑ventilated area in tightly sealed corrosion‑resistant containers away from incompatible materials; typical shelf life is at least 12 months when unopened and stored correctly, though you should follow supplier storage recommendations and batch dating.
What are the key safety and handling precautions for aluminum sulfate?
Aluminum sulfate is an irritant—avoid skin and eye contact and inhalation; use chemical‑resistant gloves, splash goggles, and local exhaust ventilation, and follow the product SDS for first‑aid, PPE, and spill response procedures.
What does '50% concentration' mean and how does it differ from other grades?
A 50% solution denotes approximately 50% w/w aluminum sulfate in water and is a common industrial grade for coagulation; different concentrations change dosing rates, pH impact, handling, and transport considerations, so select the grade appropriate to your process.
What documentation is available for aluminum sulfate?
Suppliers typically provide a Safety Data Sheet (SDS/MSDS), Certificate of Analysis (COA), and technical data sheet on request; these documents detail composition, physical/chemical properties, analytical results, and handling instructions.
How is aluminum sulfate 50% shipped and what packaging options are common?
It is commonly shipped as a liquid in lined HDPE drums, poly IBCs (1,000 L), or bulk tankers; transport classification depends on local regulations and concentration—consult the SDS and your carrier, though aqueous aluminum sulfate solutions are generally non‑flammable and often not classified as dangerous goods.
What materials is aluminum sulfate compatible with and what should be avoided?
Compatible materials include corrosion‑resistant plastics (HDPE, PP) and stainless steels (304/316) for storage and handling; avoid prolonged contact with carbon steel, reactive metals, strong bases (which precipitate aluminum hydroxide), and strong oxidizers.
What are typical technical specifications for a 50% aluminum sulfate solution?
Typical specifications include CAS 10043-01-3, formula Al2(SO4)3, assay ~50% w/w Al2(SO4)3, appearance clear to pale brown liquid, pH commonly around 2.5–4.0, and specific gravity roughly 1.4–1.6; request a COA for exact batch values.
Which industries and applications commonly use aluminum sulfate?
Common applications are industrial water and wastewater treatment (coagulation/flocculation), pulp and paper (sizing and retention), textile dyeing and finishing, tannery processes, and laboratory reagent use where aluminum salts or pH adjustment are required.
How can I purchase aluminum sulfate 50% and what is the usual availability?
Aluminum sulfate 50% is sold by chemical distributors in drum, IBC, and bulk tanker quantities with lead times ranging from days to weeks depending on volume; contact suppliers for pricing, minimum order quantities, SDS, and COA, and to arrange delivery.

Documentation & Downloads

Safety Data Sheet
SDS / MSDS
Request COA
Certificate of Analysis
Technical Data Sheet (TDS)
Available for all products

Ready to Purchase?

SDS & COA included • Same-day shipping • No minimum order

Shop Aluminum Sulfate