Product Name: Polyaluminium Chloride
Synonyms: PAC, Polyaluminum Chloride
Chemical Formula: [Al2(OH)nCl6-n]m
CAS Number: 1327-41-9
Recommended Use: Water treatment, paper industry, deodorizing, precipitation of suspended solids
Manufacturer’s Details: Supplier address and emergency telephone number required for workplace reference
UN Number: 3264 (for transportation reference)
Emergency Contact: On-site safety 24-hour hotline or local emergency provider
Classification: Corrosive to metals, irritant to skin and eyes based on GHS and OSHA standards
GHS Label Elements: Exclamation mark, corrosion symbol
Hazard Statements: Causes serious eye damage, may irritate skin, risk of respiratory tract irritation if dust or mist inhaled
Precautionary Statements: Wear gloves, eye protection, wash hands thoroughly after handling, avoid inhalation
Routes of Exposure: Eyes, skin, inhalation, ingestion
Symptoms of Exposure: Redness, tearing, coughing, irritation, burning sensation in contact sites
Chemical Name: Polyaluminium Chloride
CAS Number: 1327-41-9
Concentration: Typical solid PAC contains 28-30% Al2O3 equivalent; liquid grades range from 10-18%
Other Ingredients: Water (for liquid products), trace metals, low levels of hydrochloric acid
Impurities: Heavy metals (mainly iron, traces of lead/cadmium) generally kept below safety limits
Eye Contact: Rinse thoroughly with running water for at least 15 minutes, seek medical attention if irritation persists
Skin Contact: Remove contaminated clothing, wash area with soap and water, monitor for persistent irritation
Inhalation: Move to fresh air, keep comfortable for breathing, seek attention if difficulty persists
Ingestion: Rinse mouth, never induce vomiting, seek immediate medical attention
Advice to Physician: Provide supportive treatment based on symptoms; no known antidote, monitor for chemical burns or irritation
Suitable Extinguishing Media: Water spray, dry powder, foam or carbon dioxide
Unsuitable Media: Water jet may spread powdered product
Hazardous Combustion Products: Hydrogen chloride (HCl) gas and aluminum oxide fumes at high temperature
Protective Equipment: Full-face self-contained breathing apparatus, chemical-resistant clothing
Fire Hazards: PAC does not itself burn but may decompose, releasing corrosive fumes in fire conditions
Special Considerations: Cool containers with water away from spill, avoid inhaling decomposition gases
Personal Precautions: Wear gloves, safety goggles, avoid dust generation, ensure adequate ventilation
Environmental Precautions: Prevent spillage from entering drains and waterways, contain runoff using sand or inert absorbent
Clean-Up Methods: For solid, sweep or scoop into labeled container; for liquid, absorb with inert material, wash contaminated area with plenty of water
Disposal: Transfer collected matter to approved chemical waste disposal; clean surface thoroughly
Emergency Procedures: Notify safety officer, isolate affected area until cleanup is complete, use warnings for people nearby
Handling: Use local exhaust or respiratory protection when working with powder or mist, avoid direct contact and ingestion
Hygiene Measures: Do not eat, drink, or smoke during handling, wash thoroughly after use, keep work area clean
Storage Conditions: Store in corrosion-resistant, labeled containers, away from incompatible materials (alkalis, reducing agents), protect from moisture and direct sunlight
Temperature Limit: Solid PAC can handle ambient temperatures, liquid should be kept above freezing
Segregation: Keep separate from strong acids, bases, and food materials
Exposure Limits: No established OSHA, ACGIH, or NIOSH exposure limits for PAC, but general dust or mist exposure should be minimized
Engineering Controls: Provide local ventilation or fume extraction, keep processing areas well ventilated
Personal Protection: Chemical-resistant gloves (such as nitrile), splash-proof goggles, long-sleeved clothing
Respiratory Protection: Use dust mask during handling of dry product; mist respirator for concentrated liquid handling
Other Controls: Install eye wash stations, emergency showers in work area
Appearance: Yellow or pale yellow powder, granular or clear to slightly opaque yellow liquid
Odor: Faint, slightly acidic odor
pH (1% solution): 3.5 – 5.0
Melting Point: Decomposes without melting
Boiling Point: >100°C for solution
Solubility: Easily soluble in water
Vapor Pressure: Not significant for solids
Density: 1.15–1.25 g/cm³ (liquid); 0.7–0.9 g/cm³ (powder)
Flash Point: Not applicable
Other Properties: Corrosive to metals, hygroscopic (absorbs moisture from air)
Chemical Stability: Stable under normal temperatures and pressures, sensitive to moisture for dry forms
Conditions to Avoid: Alkaline substances, strong reducing agents, exposure to strong heat
Incompatible Materials: Metals such as iron, steel, zinc; bases like sodium hydroxide; organic materials
Hazardous Decomposition: Hydrogen chloride gas, aluminum oxide, small amounts of chlorine gases at high temperature
Polymerization: Does not polymerize under normal handling
Acute Toxicity: Oral LD50 (rat) estimated at 4000–6000 mg/kg
Skin Corrosion/Irritation: Causes irritation, burning sensation on contact
Serious Eye Damage/Irritation: Causes eye burns and possible irreversible damage
Respiratory Irritation: Dust or mist inhalation may cause coughing, throat and nasal irritation
Chronic Effects: Not classified as carcinogenic or mutagenic; prolonged exposure may worsen existing skin conditions
Other Effects: Ingestion in large quantities may damage gastrointestinal tract, cause vomiting, pain
Toxicity to Aquatic Life: High concentrations harmful to aquatic organisms, alters water pH
Persistence and Degradability: Hydrolyzes in water, forms insoluble aluminum hydroxide, does not persist as PAC
Bioaccumulation Potential: Aluminum ions have low tendency to bioaccumulate
Mobility in Soil and Water: Tends to bind with particles, reduced mobility after hydrolysis
Other Harmful Effects: Improper disposal can kill aquatic plants and disrupt habitats
Waste Treatment Methods: Collect residues for hazardous landfill or chemical waste processing
Disposal of Product: Do not discharge to sewer or surface waters; neutralize and dispose as directed by local regulations
Disposal of Packaging: Triple-rinse containers, puncture, send to approved recycler or waste handler
Special Instructions: Always involve environmental safety personnel or hazardous waste management
UN Number: 3264 (for solutions, corrosive liquid, acidic, inorganic)
Transport Hazard Class: 8 (Corrosive substances)
Packing Group: III
Labels Required: Corrosive, keep dry, not for air transport in bulk
Environmental Hazards: Avoid spillage during loading and unloading, emergency plans on route
Special Precautions: Check container integrity before shipping, segregate from food and feedstuffs
OSHA: Classified as hazardous based on corrosive and irritant properties
TSCA: Listed
SARA Title III: Not specifically listed, but spills must be reported as required
EU Regulations: Covered under REACH, listed in Annex VI of CLP as corrosive
WHMIS (Canada): Classified as Class E corrosive material
Other Standards: Handle according to local, state, and national regulations, with documentation available in workplace
