Aluminum Sulfate 50%

Product Overview

Aluminum Sulfate 50% Technical Grade, commonly known as Liquid Alum, is a concentrated aqueous solution of aluminum sulfate (Al₂(SO₄)₃). It is engineered for reliable coagulation, flocculation, and pH adjustment in industrial systems. This 50% solution provides consistent performance in water treatment and manufacturing processes, with a controlled assay range of 49–51% to ensure precise dosing.

The solution is clear, colorless to pale yellow, and odorless, facilitating integration into chemical workflows. With a density of approximately 1.20 g/mL at 25°C, it is suitable for standard pumping and metering equipment. Aluminum Sulfate 50% is widely used in paper manufacturing as a sizing agent and in construction for concrete acceleration. It is packaged in corrosion-resistant containers, including HDPE drums and totes, to maintain stability and prevent hydrolysis.

Key Properties

• Chemical Formula: Al₂(SO₄)₃
• CAS Number: 10043-01-3
• Concentration: 50% (49-51% Assay)
• Grade: Technical
• Appearance: Clear, colorless to pale yellow liquid
• Specific Gravity (20°C): 1.18–1.22 (typical 1.20)
• Molecular Weight: 342.15 g/mol
• Solubility: Fully soluble in water
• Iron (Fe): ≤ 50 ppm (typical 10 ppm)
• Viscosity (25°C): 1.5 cP

Common Applications

• Water Treatment: Functions as a primary coagulant to neutralize charges and remove suspended solids, turbidity, and colloidal impurities in industrial wastewater.
• Paper Manufacturing: Acts as a sizing agent to improve fiber bonding, paper strength, and ink absorption; also used for pitch control.
• Construction & Concrete: utilized as an accelerator in shotcrete and concrete formulations to control setting times and improve workability.
• Textile Industry: Applied in dyeing processes as a mordant to stabilize color affinity and facilitate pigment precipitation.
• Chemical Processing: Used for pH reduction and as a raw material in the synthesis of other aluminum compounds.

Safety Precautions

Aluminum Sulfate 50% is an acidic solution that requires proper handling protocols. Personnel should wear acid-resistant gloves, safety goggles, and protective clothing to prevent skin and eye contact. The product acts as an irritant and can cause burns upon prolonged exposure. Ensure adequate ventilation during use.

Store in a cool, dry area in corrosion-resistant containers (HDPE, fiberglass, or glass). Keep separated from strong bases and oxidizers. In the event of a spill, contain with inert absorbent material and neutralize according to local regulations. Refer to the Safety Data Sheet (SDS) for comprehensive handling, storage, and emergency response information.

Benefits

High Purity Formulation: Technical grade solution with controlled iron and heavy metal content for predictable process results.
Efficient Coagulation: Rapidly forms floc to settle suspended solids in varied water chemistries.
Versatile Utility: Effective for pH control, sizing, and chemical synthesis across multiple industries.
Scalable Packaging: Available in sizes ranging from 1 quart to 330-gallon totes to suit both pilot testing and full-scale production.

Related Products

• Aluminum Sulfate Hydrate ACS Grade
• Calcium Chloride
• Magnesium Chloride Hexahydrate FCC, USP Grade