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Chemical Name: Propylene Glycol Methyl Ether Acetate
Common Names: PGMEA, 1-Methoxy-2-propanol acetate
Chemical Formula: C6H12O3
Appearance: Clear, colorless liquid
Odor: Slightly ester-like, sweet
Uses: Frequently turns up as a solvent in semiconductor manufacturing, as well as in paints, inks, coatings, and cleaning agents
Physical Hazards: This liquid brings flammability risk, and vapors can stack up to form explosive mixtures with air; static discharge or sparks bring potential for ignition.
Health Hazards: It irritates eyes, skin, and the respiratory system. Exposures at higher levels have led to headaches, dizziness, and nausea; direct swallowing risks serious side effects.
Environmental Hazards: Release into soil or drains isn’t smart—can endanger waterways and organisms downstream of the point of spill.
Label Elements: People usually find hazard pictograms, warning notices, and risk statements on any legitimate container.
Main Ingredient: Propylene Glycol Methyl Ether Acetate, pure or with small percentage impurities depending on grade and supplier
CAS Number: 108-65-6
Impurities: Trace propylene glycol methyl ether and other by-products often appear at very low concentrations as leftovers from manufacturing
Concentration: Commercial blends usually offer high purity, but warnings about impurities always matter for sensitive manufacturing
Inhalation: Quick removal to open air helps. Seek medical attention if symptoms stay persistent.
Skin Contact: Remove contaminated clothing, rinse skin with plenty of water and soap. Ignore myth that solvents evaporate cleanly—contact leaves residue.
Eye Contact: Rinse with low-pressure water, lifting eyelids repeatedly; get skilled medical help, especially for pain or redness.
Ingestion: Never try to induce vomiting. Rinse mouth if possible, call for medical support at once as accidental swallowing can depress central nervous system and bring on other complications
Suitable Extinguishing Media: Dry chemical, carbon dioxide, foam, and water spray all see use. Direct water jets do not reliably control solvent fires.
Hazards from Combustion: Burning forms irritating and toxic fumes, often involving carbon monoxide, carbon dioxide, and sometimes trace aldehydes.
Precautions for Firefighters: Gear up with full self-contained breathing apparatus, and focus on cooling nearby containers to keep fire from spreading to storage areas.
Personal Precautions: Keep ignition sources and people not involved away from the area. Use protective gloves, goggles, and solvent-resistant clothing. Vapor can migrate to low points from spill sites.
Containment: Stop leak if safe, use sand or inert absorbent to soak up liquid, prevent movement to drains or sewers; ventilate closed spaces continuously.
Clean-Up: Collect absorbed material in approved drums. Spill waste goes as hazardous—nothing belongs in regular trash or local landfill.
Handling: Use in well-ventilated areas. Avoid skin or inhalation exposure by maintaining strict procedures and using personal protection; keep away from open flames, smoking, or static sources.
Storage: Store at cool room temperature, in tightly closed containers, ground and bonded to prevent static build-up; always segregate from oxidizing agents and direct sunlight; maintain clear labels to avoid accidental misuse.
Occupational Limits: Many guides suggest limits near 50 ppm for workplace air, based on recommendations by OSHA, ACGIH, or local agencies.
Engineering Controls: Steady ventilation is key—fume hoods or explosion-proof local exhaust systems do the job in factories.
Personal Protective Equipment: Splash goggles, solvent-resistant gloves, lab coats, and closed footwear; in poorly ventilated spots, cartridges for organic vapor or full supplied-air respirators; never cut corners on PPE in production facilities.
Boiling Point: Close to 145°C
Melting Point: Below -50°C
Flash Point: 42-45°C (varies slightly by blend)
Density: Around 0.965-0.970 g/cm³
Solubility: Readily mixes with organic solvents; moderately soluble in water
Vapor Pressure: Moderate, rises quickly at higher temperatures—keeping containers sealed and cool sharply cuts down on evaporation or accidental inhalation
Chemical Stability: Holds up well in regular conditions if kept out of sunlight and heat.
Reactivity: Reacts with strong acids, oxidants, and alkaline materials, forming hazardous by-products, sometimes in the form of explosive peroxides over time.
Decomposition: Overheating in closed systems builds pressure and leads to rupture; combustion releases carbon oxides and irritating gases.
Acute Effects: Short-term breathing or skin exposure causes irritation, headaches, possible dizziness, or drowsiness.
Chronic Effects: Repeated high doses have affected liver and kidney function in some animal tests. Long-term exposure should be avoided.
Routes of Exposure: Inhalation, skin absorption, accidental swallowing most common.
Symptoms: Dry skin, eye redness, sore throat, even unconsciousness at high doses. Actual impacts tend to depend on concentration, ventilation, and length of contact.
Carcinogenicity: Not formally listed as a carcinogen by IARC, NTP, or OSHA.
Toxicity: Not especially dangerous to aquatic life in small releases, but larger volumes harm fish and invertebrates, stressing natural systems.
Persistence: Biodegrades with time, but not always rapidly enough to prevent short-term environmental buildup after a substantial spill.
Bioaccumulation: Limited evidence for build-up in aquatic life, but monitoring is smart for any site handling volumes near rivers or lakes.
Mobility in Soil: Migrates easily—spills can reach groundwater quickly.
Waste Treatment: Industrial incineration remains the main way out, often under tight temperature control to avoid incomplete burning. Mixing with regular garbage gets authorities' attention fast.
Recovery/Reuse: Certain industries reclaim and reuse by distillation, provided purity holds within acceptable specs.
Regulatory Guidance: Handle as hazardous waste by local, state, and national rules; follow all labeling, transport, and reporting requirements to prevent fines.
UN Number: Typically UN 3272 for shipping globally.
Proper Shipping Name: Esters, N.O.S. or Propylene Glycol Methyl Ether Acetate
Class: 3 (Flammable Liquid)
Packing Group: III
Precautions: Always ship in tightly sealed chemical drums or UN-rated cans, stored upright, with hazard labels clearly visible where warehouse and shipping workers have to move them.
OSHA: Controls structure guidelines in the US workplace for usage, storage, and emergency response.
EPA: Considers waste a hazardous material, applies strict disposal and reporting standards.
REACH (Europe): Listed and regulated for import and distribution inside the EU. Requires proof of hazard communication and safety planning.
Other Jurisdictions: Rules may shift across borders—safety data checking always pays off with regulatory agencies before mass handling or import.
Community Right-to-Know: Employers must disclose workplace chemical hazards to affected workers as a basic workplace right.
