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Chemical Name: Tetraethylene Glycol Methyl Ether
Synonyms: 3,6,9,12-Tetraoxapentadecan-1-ol, 1-methoxy-2-[2-(2-methoxyethoxy)ethoxy]ethane
CAS Number: 2374-14-3
Appearance: Clear, colorless liquid without strong odor, which helps users recognize spillage by sight rather than smell.
Common Uses: Solvent in coatings, dyes, and specialty inks. Beyond industry walls, this compound crops up in cleaning products designed for laboratory use.
Health Hazards: Exposure can cause irritation to the eyes and skin. Inhalation may bring headaches or lightheadedness if ventilation is poor. Extensive contact increases risk for drowsiness. Swallowed, it leads to abdominal discomfort.
Environmental Hazards: It breaks down in soil and water, yet major leaks mean organisms—especially aquatic ones—might face harm.
Risk Phrases: Shows low acute toxicity but persistent skin contact or eye splashes need quick attention. General accident risks revolve around slippery floors or improper storage.
Main Ingredient: Tetraethylene glycol methyl ether forms most of the product.
Impurities: Very low; manufacturing tends toward high purity for solvent applications. Additives or stabilizers are uncommon, making unexpected reactions less likely in standard uses.
Eye Contact: Flushing eyes right away with cool water for 15 minutes lowers the chance of lasting irritation. Remove contact lenses early. Quick rinsing usually prevents more serious consequences.
Skin Contact: Wash area with water and mild soap. Clean skin reduces risk of delayed irritation. Soiled clothes should be changed out.
Inhalation: Breathing cleaner air helps once symptoms appear. Move outdoors or open windows if in closed spaces.
Ingestion: Rinse mouth. Drinking water may help, but induced vomiting brings extra hazards and usually isn't recommended. If symptoms persist, a medical check is best.
Extinguishing Media: Standard foam, carbon dioxide, or dry chemical all work. Water spray can help cool containers but large volumes may spread spilled liquid.
Specific Hazards: Though not highly flammable, strong fires may give off irritating fumes—glycol ethers sometimes create carbon monoxide and other gases. Take shelter from fumes.
Protective Equipment: Firefighters use self-contained breathing gear plus full protective clothing to reduce skin and lung exposure. Getting too close without this gear invites chemical exposure with hot gases.
Personal Protection: Gloves, goggles, and proper ventilation keep responders safer. Avoid all open flames. Slick surfaces make slipping a real issue.
Containment: Absorb spills with inert materials like sand. Gather up with non-sparking tools to stop static build-up.
Disposal of Materials: Collected liquid and soaked materials need placement in clearly labeled, suitable containers for proper handling. Thorough cleaning of the site afterward prevents surface residue and repeat accidents.
Safe Handling: Working in well-ventilated areas keeps vapor build-up low. Good practice means skipping food, drink, and smoking in work zones. Containers need to be handled gently to avoid cracking or leaks.
Storage: Cool, dry, and shaded storage slows degradation. Well-sealed drums or tanks stop vapors from escaping. Large bulk should stay away from oxidizing materials. No smoking or strong heat sources nearby.
Ventilation: Local exhaust or fume hoods lower exposure risks especially in smaller indoor facilities. Natural airflow sometimes works, but engineering controls win out for safety.
Personal Protective Equipment: Chemical-resistant gloves, eye protection with side shields, and coveralls keep contact low. Wearing a mask becomes smart if mist or vapor lingers; air-purifying respirators for long exposure.
Hygiene: Washing after work and before breaks keeps accidental skin exposure down. No direct contact with clothing that has absorbed the chemical.
State: Clear liquid with low viscosity.
Odor: Mild, almost undetectable, fitting most indoor uses.
Boiling Point: Ranges near 276°C; slightly higher than shorter glycol ethers.
Melting Point: Approaches -68°C, keeping the chemical liquid under most standard storage conditions.
Solubility: Mixes well with water and most organic solvents, aiding in clean-up and process uses.
Vapor Pressure: Low, which means less inhalation risk from open containers.
Flash Point: Around 135°C, far from low-risk but not demanding special fireproof storage.
Chemical Stability: Stable under regular storage and handling conditions. Exposure to heat or direct sunlight over time increases decomposition risk.
Reactive Materials: Mixing with strong oxidizers or acids guarantees unstable results and should be kept strictly separate.
Decomposition Products: Heated or burned, the chemical may break down to carbon monoxide or other toxic gases. Good ventilation clears these from confined work areas.
Acute Exposure: Inhalation or high contact generates mild to moderate eye or skin irritation. Ingestion causes gut discomfort but major harmful effects appear rare.
Chronic Exposure: Prolonged skin contact leaves some risk of dryness or dermatitis. Daily workers stay safer with gloves and short task exposure.
Sensitization: Not known to trigger allergic reactions in most people; rare cases might see localized symptoms.
Carcinogenicity: No clear evidence links this glycol ether to cancer in humans according to major health agencies.
Aquatic Toxicity: Major spills disrupt aquatic life, killing small invertebrates or plants through oxygen demand.
Persistence and Degradability: Biodegrades in soil and water but best avoided in large environmental releases.
Bioaccumulation Potential: Low; rapid breakdown in the environment means little risk of buildup in plants or animals.
Mobility in Soil: Moves with groundwater, threatening drinking water if not quickly contained.
Methods: Disposal in line with local regulations. Incineration in approved facilities works well, but never mix with household waste. Waste handlers must wear protective gear.
Environmental Precautions: Keep out of waterways and soil to avoid environmental exposure. Clear labeling of containers and waste packaging helps downstream processors assess and minimize risk.
Classification: Not typically listed as hazardous for general road, rail, sea, or air freight. Nonetheless, leaks or damaged containers on transit can cause workplace risks.
Packing: Leak-proof drums or bottles. Labels call out chemical hazards.
Handling in Transit: Avoid stacking or dropping large containers. Secure loads to prevent tipping, which often leads to unseen cracks or spills.
Workplace Exposure Limits: National authorities provide guidelines, but most set at low levels due to minor inhalation risk.
Environmental Release: Permits required for bulk discharge; most regulations limit release to the environment.
Inventory Status: Listed in chemical notification programs in the US, Europe, and Asia. Safe, routine tracking prevents worker and environmental incidents.
Worker Protection Rules: Guidelines ensure gloves and eyewear where regular use occurs to keep accidents from turning serious.
