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Product Name: Polymethacrylic Acid (PMA)
Common Usage: Water treatment, dispersant in detergents, paper processing, superabsorbents
Chemical Formula: (C4H6O2)n
Synonyms: Poly(methacrylic acid), Polymethylacrylate
Manufacturer Contact: See local supplier or distributor details, phone and email as required by local regulations
Emergency Phone Number: Provided by the local supplier or national emergency response
Recommended Restrictions: Avoid ingestion, not for food or pharmaceutical use, keep away from open flames and strong oxidizers
Hazard Classification: Skin and eye irritant, not classified as a carcinogen by IARC, OSHA, or NTP
Signal Word: Warning
Hazard Pictograms: Exclamation mark (GHS07)
Hazard Statements: Causes skin and eye irritation; may cause respiratory irritation if inhaled as dust
Precautionary Statements: Use with protective gloves and eye protection, avoid dust formation, ensure adequate ventilation
Other Hazards: Dust may form explosive mixture with air, high concentrations can displace oxygen in confined spaces
Chemical Identity: Poly(methacrylic acid)
CAS Number: 25086-15-1
Concentration Range: Generally 90–100% by weight depending on supplier
Impurities: Small quantities of residual monomer and processing aids, typically below 1%
Stabilizers/Additives: Water may be added for aqueous solutions; otherwise, none reported
Inhalation: Move affected person into fresh air and keep comfortable, seek medical advice if symptoms persist
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present, continue rinsing, get medical attention for irritation
Skin Contact: Wash with soap and water, remove contaminated clothing, get medical attention if irritation develops
Ingestion: Rinse mouth with water, do not induce vomiting, seek immediate medical attention, show label or container if available
Acute Symptoms: Irritation to eyes, skin, respiratory tract; coughing with inhalation; nausea if swallowed
Delayed Symptoms: Prolonged exposure may cause dermatitis or allergic responses in sensitive individuals
Suitable Extinguishing Media: CO2, dry chemical powder, water spray, foam
Unsuitable Extinguishing Media: Direct water jet may spread burning material
Special Hazards: Can emit toxic fumes of carbon monoxide and carbon dioxide under fire conditions
Protective Equipment: Wear self-contained breathing apparatus, full firefighting protective clothing
Firefighting Instructions: Contain run-off, evacuate area, avoid inhaling fumes, prevent entry to drains
Explosion Hazards: Dust may form explosive mixture with air, proper ventilation required
Personal Precautions: Evacuate unnecessary personnel, use personal protective equipment, avoid contact with eyes and skin, avoid breathing dust
Environmental Precautions: Prevent from entering waterways, sewers, basements, or confined spaces
Cleanup Methods: Sweep up and place in a suitable container for disposal, avoid dust generation, ventilate area
Spill Response: After clean-up, wash area with water to remove residues, dispose of waste in accordance with local regulations
Handling: Use in well-ventilated area, minimize dust generation and accumulation, wear protective clothing, wash hands after handling
Storage Conditions: Store in a cool, dry, well-ventilated place away from incompatible substances like strong oxidizers, acids, and bases
Storage Stability: Keep container tightly closed, avoid exposure to moisture, avoid temperatures above recommended storage maximum
Incompatible Materials: Reacts with strong bases, strong oxidizing agents, concentrated acids
Special Handling Advice: Use explosion-proof equipment where dust formation is probable, ground and bond containers when transferring
Occupational Exposure Limits: No specific OSHA PEL or ACGIH TLV for PMA, minimize exposure by local ventilation and process enclosure
Engineering Controls: Use local exhaust, process enclosure, or other engineering controls to keep airborne levels below recommended limits
Personal Protective Equipment: Safety goggles, gloves (nitrile or neoprene recommended), dust masks or respirators (NIOSH-approved), long-sleeved garments
Hygiene Measures: Wash thoroughly after handling, do not eat, drink, or smoke in processing area, remove contaminated clothing promptly
Appearance: White powder or granules, or clear to cloudy aqueous solution
Odor: Faint, characteristic odor
Odor Threshold: Not established
pH: Aqueous solution is acidic, typically 2-3 (1% solution)
Melting Point/Freezing Point: Decomposes before melting
Boiling Point: Not applicable for solid
Flash Point: Not flammable under standard conditions
Evaporation Rate: Not applicable
Flammability: Not readily flammable, may burn at high temperatures
Vapor Pressure: Negligible at 20°C
Solubility: Soluble in water (forms viscous solution), insoluble in most organic solvents
Partition Coefficient: Not established
Decomposition Temperature: Above 200°C
Viscosity: Viscous in aqueous solution
Chemical Stability: Stable under normal conditions of use and storage
Hazardous Reactions: No dangerous reaction expected under advised handling and storage conditions
Conditions to Avoid: Heat, moisture, ignition sources, formation of dust clouds
Materials to Avoid: Strong oxidizing agents, concentrated acids, strong bases
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, possible formation of acrid fumes upon thermal decomposition
Likely Routes of Exposure: Skin and eye contact, inhalation of dust, ingestion
Acute Effects: Eye and skin irritation, respiratory tract irritation on inhalation
Chronic Effects: Repeated exposure may cause dermatitis, rare reports of allergic skin reactions
LD50/LC50: Oral LD50 (rat) > 5000 mg/kg (low toxicity), no significant inhalation toxicity data
Carcinogenicity: Not listed as carcinogenic by IARC, NTP, or OSHA
Reproductive Toxicity: No adverse reproductive effects observed in animal studies
Mutagenicity: Not observed under standard test systems
Environmental Toxicity: Not classified as harmful to aquatic life at standard concentrations, does not bioaccumulate
Mobility in Soil: High solubility in water, can migrate in aquatic systems
Persistence and Degradability: Not readily biodegradable, can persist in environment for extended periods without proper disposal
Bioaccumulation Potential: Low
Other Adverse Effects: In large quantities, may alter pH of surface or ground waters, should not be released untreated
Waste Treatment Methods: Dispose of in accordance with federal, state, and local environmental regulations
Disposal of Packaging: Containers must be triple-rinsed, plastic or metal packaging recycled or landfilled per local rules
Special Precautions: Do not flush to surface water or sanitary sewer, avoid uncontrolled release, consult licensed waste management authority
Recommended Methods: Physical removal by vacuum or sweep for solid waste, chemical or biological treatment for liquid waste where feasible
UN Number: Not regulated for transport unless in large quantities
UN Proper Shipping Name: Not applicable
Transport Hazard Class: Not classified as hazardous
Packing Group: Not assigned
Special Precautions for User: Avoid generating dust during loading or unloading, keep container sealed and upright
Marine Pollutant: Not classified as a marine pollutant
OSHA Status: This product is not hazardous as defined by OSHA Hazard Communication Standard 29 CFR 1910.1200
TSCA (Toxic Substances Control Act): Listed on US TSCA Inventory
REACH (EU): PMA is registered under Regulation (EC) 1907/2006
DSL/NDSL (Canada): Listed/Compliant
Other National Inventories: Included in AICS (Australia), ENCS (Japan), IECSC (China), and KECL (Korea)
GHS Labelling: Classified as a hazardous chemical in some regions due to irritant properties
Other Regulations: No specific SARA, CERCLA, or RCRA reporting requirements known; comply with local jurisdictional requirements
