Aluminium sulfate

Aluminium Sulfate (Al₂(SO₄)₃) - Versatile Industrial Coagulant & Chemical
Intermediate
Product Overview
Aluminium sulfate is a water-soluble inorganic salt with the formula Al₂(SO₄)₃,
widely recognized for its role as a coagulating agent in water treatment and as
a key additive in paper manufacturing. Available in anhydrous form (rare
mineral millosevichite) and hydrated forms (notably hexadecahydrate
Al₂(SO₄)₃·16H₂O and octadecahydrate Al₂(SO₄)₃·18H₂O), this compound delivers
exceptional performance across industrial, environmental, and technical
applications.
Key Applications
1. Water Treatment & Purification
Coagulant for Drinking Water & Wastewater: Neutralizes particle charges to
promote flocculation, removing impurities in municipal and industrial water
systems.
Pool & Cooling Tower Treatment: Efficiently clarifies water by precipitating
suspended solids.
Mining Wastewater: Reduces turbidity and heavy metal ions through
coagulation.
2. Paper Manufacturing
Papermaker’s Alum: Acts as a sizing agent to improve ink retention and paper
strength, and as a flocculant in pulp processing.
3. Construction & Fire Safety
Concrete Accelerator & Waterproofing Agent: Speeds up setting time and
enhances water resistance.
Fire Extinguishing Foam: Reacts with sodium bicarbonate to generate CO₂-rich
foam, smothering hydrocarbon fires (commonly used in Japan/India).
4. Agriculture & Horticulture
Soil pH Regulator: Lowers soil alkalinity, ideal for acid-loving plants
(e.g., hydrangeas, which change flower color with pH adjustment).
Molluscicide: Effective against Spanish slugs in agricultural settings.
5. Industrial & Chemical Synthesis
Textile Dyeing Mordant: Fixes dyes to fibers by forming insoluble pigment-
alum complexes.
Phase Transfer Catalyst: Facilitates organic reactions (e.g., Williamson
ether synthesis).
Antiperspirant & Medicinal Ingredients: Historical use in antiperspirants and
sting relief products (e.g., Stingose).
Physical & Chemical Properties
Property Parameter
Chemical Formula Al₂(SO₄)₃
CAS Number 7647-15-6
Appearance White crystalline powder/granules
Solubility 90.5 g/100mL water (25°C)
Density 3.21 g/cm³ (crystal)
Melting Point 747°C
Boiling Point 1,390°C
pH (5% Solution) 6.5-8.0
Hygroscopicity Strong (requires moisture-proofing)
Packaging & Supply Chain
Packaging Options:
25kg/50kg plastic-lined woven bags
1000kg ton bags
Customized IBC tanks (20,000L) for bulk orders
Storage Conditions: Cool, ventilated warehouse; keep away from oxidants and
moisture.
Transportation: Non-hazardous (UN no special requirements); protected from
rain and high temperatures.
Quality & Compliance
Purity Grades:
Industrial grade: ≥99.0%
Reagent grade: ≥99.9%
Standards: Compliant with ISO 9001, REACH (for EU markets), and local
environmental regulations.
Safety & Handling
Hazard Warnings: Irritant to eyes and mucous membranes; avoid inhalation of
dust.
Emergency Measures:
Skin/eye contact: Rinse with water; seek medical advice.
Ingestion: Induce vomiting with warm water.
Storage Precautions: Separate from strong acids and oxidants; use dust masks
and protective gear during handling.
Why Partner With Us?
Factory Direct Supply: Competitive pricing with direct access to production
facilities.
Technical Expertise: Customized solutions for water treatment capacity
planning and formulation support.
Global Logistics: Efficient shipping to North America, Europe, Southeast
Asia, and beyond.

If you are interested in our products, please contact:

Bill Zhang

Sales Director

SHANDONG SUMCHEMICALS CO., LTD.

Mobile/ WhatsApp: +86 156 6271 5985

QQ: 3267823033

Wechat: billzhang5985

E-mail: bill@sumsupply.com

E-mail: billzhangsales@gmail.com

Minimum Order: 2 metric tons

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