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Chemical Name: Dipropylene Glycol Propyl Ether DPNP
Common Names: Propyl Ether of Dipropylene Glycol
Formula: C9H20O3
Appearance: Clear, colorless liquid with a mild odor
Notable Uses: Industrial solvent, cleaner, and coupling agent in paint, coatings, and cleaning sectors
Hazard Classification: Not classified as highly hazardous, but exposure concerns remain with any glycol ether
Physical Hazards: Low flammability, but vapors can catch fire at elevated temperatures
Health Concerns: Can cause irritation to eyes and skin; breathing in mists or vapors over long periods may lead to headache, nausea, or dizziness
Environmental Impact: Moderate risk if released in large quantities, especially near waterways
Main Component: Dipropylene Glycol Propyl Ether, typically over 95% in purity for industrial applications
Impurities: Small amounts of other glycol ethers or water, rarely over a few percent
Eye Contact: Rinse thoroughly with plenty of water, remove contact lenses, continue rinsing if irritation persists
Skin Contact: Wash off immediately with soap and water, discard contaminated clothing
Inhalation: Move to fresh air, give oxygen if breathing is difficult, seek medical attention if symptoms do not improve
Ingestion: Rinse mouth, do not induce vomiting, seek medical attention as soon as possible
Extinguishing Methods: Use foam, dry chemical, or carbon dioxide for smaller fires, water spray for cooling adjacent containers
Burning Products: Produces carbon monoxide, carbon dioxide, and possibly other hydrocarbons
Fire Hazards: Vapors may travel, concentrate, and ignite at ignition sources
Firefighter Precautions: Wear full protective gear and a self-contained breathing apparatus
Personal Safety: Use gloves, goggles, and protective clothing, ensure good ventilation
Containment: Prevent entry into drains or watercourses by diking with sand or earth, collect with non-combustible absorbent
Cleanup: Sweep, shovel, or vacuum up and place in appropriate waste container for disposal
Spill Response: Wash area with water after bulk is removed, ventilate, and avoid inhalation of vapors
Handling: Work in well-ventilated spaces, avoid inhaling vapor and contact with skin or eyes, keep away from foods and incompatible materials
Storage: Store in tightly closed containers, keep away from heat, sparks, and open flames, maintain material at consistent room temperature to avoid condensation
Engineering: Use local exhaust or general room ventilation to keep vapor concentrations low
Personal Protective Equipment: Safety goggles, chemical-resistant gloves (such as nitrile), lab coat or coveralls when there’s potential for splashing
Respiratory Protection: Mask if working in poorly ventilated areas or during cleanup of large spills
Hygiene: Wash hands after handling, avoid eating and drinking in areas where this chemical is used
Physical State: Liquid
Appearance: Clear, colorless
Odor: Faint ether-like
Boiling Point: Typically near 225°C
Melting Point: Below -60°C
Density: Around 0.95 g/cm³
Solubility: Miscible with water and many organic solvents
Vapor Pressure: Low at room temperature, limiting inhalation risk under most conditions
Chemical Stability: Stable in standard storage conditions
Reactivity: Can react with strong acids, strong oxidizers, and strong bases; can break down at high temperatures or in fires to release toxic gases
Potential Hazards: Prolonged heating or mixing with incompatible chemicals increases risk of hazardous decomposition
Acute Effects: Can irritate skin, eyes, and respiratory system; high vapor concentrations may cause headache or dizziness
Chronic Risks: Industry studies show workers dealing with glycol ethers over months or years may experience fatigue or minor neurotoxic symptoms, especially at elevated exposure levels
Carcinogenicity: Not listed as a known or suspected human carcinogen by IARC, NTP, or OSHA
Absorption: Can enter the body via inhalation, skin contact, and ingestion, though proper ventilation and PPE reduces this risk
Aquatic Toxicity: Not acutely toxic but may have chronic effects on aquatic life if discharged in large volumes
Persistence: Breaks down slowly in water and soil, increasing the importance of responsible disposal
Bioaccumulation: Unlikely to build up in the food chain, but the chemical’s persistence means wider ecosystem effects need monitoring
Recommended Disposal: Incineration in a licensed facility offers the most complete destruction, especially for bulk quantities
Sewer Precautions: Don’t flush to drains or waterways, accidental disposal increases stress on water treatment systems
Packaging: Triple-rinse containers before recycling or disposal, follow local hazardous waste rules
UN Identification: Not typically regulated for ground or ocean transport below large bulk thresholds
Labeling: Mark as combustible liquid if shipping by air or sea in regulated quantities
Precautions: Secure containers tightly during transport, separate from strong oxidizers or acids, avoid temperature extremes
OSHA: Not classified as highly hazardous, but subject to the Hazard Communication Standard
EPA: Listed on TSCA inventory, releases above threshold quantities may trigger reporting
State Regulations: California and other states keep glycol ethers on lists for reproductive toxicity monitoring, so pay attention if handling products in jurisdictions with stricter limits
Global: European REACH regulations restrict high-volume industrial use to registered handlers with safety assessments
