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Name: Propylene Glycol Monomethyl Ether Acetate
Synonyms: 1-Methoxy-2-propyl acetate, PGMEA
Chemical Formula: C6H12O3
CAS Number: 108-65-6
Proper identification makes it possible to separate this solvent from a crowded shelf of similar chemicals. Many jobs in coatings, electronics, and ink take PGMEA into the field, so nobody wants confusion or incorrect handling—a small error can land someone in the emergency room.
Physical Hazards: Flammable liquid and vapor
Health Hazards: Irritant to skin, eyes, and respiratory tract
Environmental Hazards: Hazardous to aquatic life with long-lasting effects
Recognizing the risks PGMEA brings comes from seeing firsthand how easy it is for an open can to give off vapors that irritate your throat. Workers who go nose-blind to solvent odors may forget these effects can build up quickly, especially indoors with poor air circulation. Flammability creeps up on a busy workspace, where one spark from a tool is all it takes to ignite a pool or fume cloud.
Main Component: Propylene Glycol Monomethyl Ether Acetate (95–100%)
Common Impurities: Small amounts of related ethers or acetates
Knowing the makeup of PGMEA helps people rule out hidden surprises. Trace impurities, especially in industrial lots, might change the way it behaves. Past recalls have taught workers not to assume every drum holds only what its label claims.
Inhalation: Remove to fresh air, seek medical advice if symptoms persist
Skin Contact: Wash area thoroughly with soap and water
Eye Contact: Rinse gently with water for several minutes, remove contact lenses if present
Ingestion: Do not induce vomiting, get medical help
Few people realize how quickly a slip with a rag soaked in solvent can land them with a nasty rash. Getting solvent in the eye brings a burning pain that can’t be ignored, teaching the value of eyewash stations within arm’s reach.
Suitable Extinguishing Media: Alcohol-resistant foam, dry chemical powder, carbon dioxide
Specific Hazards: Emits toxic fumes when burned (carbon monoxide, carbon dioxide)
Protective Equipment: Self-contained breathing apparatus for fire-fighters in enclosed spaces
Fire stories circulate in labs and shops—one spill and a stray spark run together, leaving scorched gear behind. Chemical fires don’t act like wood fires; using water may spread burning solvent rather than put it out.
Personal Precautions: Evacuate the area, ventilate, avoid breathing vapors
Environmental Precautions: Mop up to prevent entry into drains, sewers, or waterways
Clean-Up: Absorb with inert materials like sand or earth, place into appropriate waste containers
Those who have slipped on a solvent-soaked floor after a spill know there’s no shortcut for proper clean-up. Spills may appear minor, but the fumes and slickness turn small accidents into real emergencies.
Handling: Work in a well-ventilated spot; avoid breathing vapors or getting skin contact
Storage: Store in tightly closed containers in cool, dry, well-ventilated areas away from heat, sparks, open flames, or oxidizing agents
Small mistakes, such as leaving lids off or stacking containers near heat, result from hurry and inattention. Long hours in warehouses and shops build the habit of double-checking seals and lids, knowing leaks aren’t always obvious until it’s too late.
Exposure Limits: OSHA PEL: 100 ppm (8-hour TWA), ACGIH TLV: 50 ppm
Engineering Controls: Use local exhaust, maintain good ventilation
Personal Protective Equipment: Chemical-resistant gloves, safety goggles, appropriate respirators if ventilation is poor
Nobody looks cool suiting up in gloves and goggles, but the stories told by old hands make it clear—cutting corners on safety costs time, money, and sometimes a career. Regular monitoring, along with peer reminders, keeps everyone breathing easier on the job.
Appearance: Clear, colorless liquid
Odor: Mild, ether-like
Melting Point: -65°C
Boiling Point: 146°C
Flash Point: 42°C (closed cup)
Vapor Pressure: 3.7 mmHg at 20°C
Specific Gravity: 0.966
Solvent characteristics line up with a typical day in a paint or ink shop. The low flash point turns careless storage into a hazard, but knowing these numbers helps plan safe work environments.
Chemical Stability: Stable under recommended storage and handling
Incompatible Materials: Strong acids, strong bases, oxidizers
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide upon burning
Many shops learn the hard way about storing solvents away from oxidizers. Incompatibility means more than an off reaction; it means real danger if mixed by mistake or stored too close together—wisdom usually drawn from collective experience, not manuals.
Exposure Routes: Inhalation, skin or eye contact, ingestion
Major Effects: Irritation, dizziness, headaches, nausea
Chronic Effects: Potential for organ damage from prolonged or repeated exposure
Facts gathered from decades of incident reports show how routine exposure stacks up over time. Spotting early warning signs, like headaches or skin irritation, demonstrates the payoff of actual vigilance—co-workers who keep each other aware build the safest crews.
Aquatic Toxicity: Harmful to aquatic life with long-lasting consequences
Persistence and Degradability: Can persist in the environment, slow to degrade under certain conditions
Bioaccumulation: Low bioaccumulation potential
Local waterways often serve as silent witnesses to what escapes down drains or gets dumped outside regulations. Community cleanups sometimes uncover evidence that chemical releases linger long past their moment of convenience, affecting downstream life and livelihoods.
Waste Treatment: Dispose according to government regulations; incineration or approved chemical waste handlers
Container Disposal: Triple rinse and puncture before disposal if country regulations allow
Experience in hazardous waste programs reveals the volume of material that stacks up from solvents. Responsible disposal, rather than shortcut dumping, keeps workplaces honest and avoids fines that can run companies out of business overnight.
Proper Shipping Name: Flammable Liquid, N.O.S. (Propylene Glycol Monomethyl Ether Acetate)
UN Number: UN 1993
Packing Group: III
Hazard Class: 3 (flammable liquid)
Unloading trucks and railcars means taking label warnings seriously. Mishandling during transfer or forgetting placards can halt operations and call in emergency services, slowing production, and putting people at risk.
OSHA: Listed as hazardous
TSCA: Listed
REACH (EU): Registered, subject to restrictions for workplace safety and environmental release
Reading between the lines in regulations comes not just from paperwork but also from site visits and regulatory audits. Complying keeps everyone above board and preserves trust between industry, public, and inspector.
