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Chemical Name: N,N-Dimethylethanolamine
Synonyms: 2-(Dimethylamino)ethanol
CAS Number: 108-01-0
Common Uses: Most often, this compound acts as an intermediate in producing pharmaceuticals, resins, and emulsifiers. People who work in chemical plants or labs with synthetic agents have probably come across it. Clear and colorless, it barely carries any scent. Its liquid state at room temperature makes handling and transfer easier but, at the same time, brings its own challenges—an unnoticed spill can creep across a surface before anyone notices.
Signal Word: Danger
Classification: Flammable liquid, Skin irritant, Eye damage risk, Acute toxicity (oral and inhalation)
Major Hazards: Contact leaves skin raw and eyes stinging; inhaled vapors can give someone a raspy throat or a cough that won’t quit. The liquid goes up in flames faster than one would expect. Splashing it around near heat sources could cost more than just a singe on your shirt. Swallowing can trigger nausea or vomiting. Prolonged exposure often amplifies irritation and respiratory symptoms. Long-term health risks are less clear but should never be discounted for those handling it repeatedly.
Substance: Single ingredient, high purity N,N-Dimethylethanolamine — purity commonly exceeds 99% in the bulk chemical trade.
Impurities: Manufacturing may leave behind trace levels of related amines or water. If used in pharmaceuticals or industrial chains, even a tenth of a percent impurity matters.
Eye Contact: Wash eyes immediately with plenty of water, keeping eyelids open far enough to reach all exposed tissue. Anyone handling this without goggles is asking for discomfort and danger.
Skin Contact: Flush exposed area under running water. Anyone who spends time in a plant knows that delays here often lead to lingering inflammation or dermatitis.
Inhalation: Get into fresh air; deep coughs and tightness in the chest signal that action is overdue.
Ingestion: Rinse mouth and watch for signs of distress. Medical care often becomes necessary because this isn’t a kitchen chemical—it works its damage deep inside.
Suitable Extinguishing Media: Foam, dry powder, carbon dioxide extinguishers stay at the ready around labs and storage areas for a reason.
Specific Hazards: Burns with a heavy, noxious smoke when it catches fire; heating it could unleash noxious vapors and chemical decomposition.
Protective Equipment: Firefighters should suit up with full gear including self-contained breathing apparatus. The risk isn’t just the initial flames, it’s the residue in the aftermath too.
Personal Precautions: Spills call for gloves, goggles, and full skin protection. This chemical streaks across floors quietly, increasing slip dangers as well as chemical contact risks.
Ventilation: Open all doors and windows—or turn on exhaust fans—to drive away vapors; anyone who has cleaned up after a leak can tell how easily its sharp, irritating fumes fill enclosed spaces.
Containment: Neutral absorbent materials (like dry sand or commercial spill kits) stop the spread.
Cleanup: Shovel or scoop into proper containers. Leaving behind a trace means risking slips, skin complaints, or worse.
Handling: Anyone regularly measuring or pouring this compound quickly learns respect for personal protective equipment. Avoid breathing in fumes or letting droplets splash onto bare skin.
Storage: Lock away in cool, well-ventilated spaces, far from open flames, hot surfaces, or direct sunlight. Steel drums often serve to contain it, but only with tight-fitting lids and clear hazard markings.
Occupational Exposure Limits: Some authorities recommend airborne concentrations below 2 ppm. These limits reflect research tying overexposure to symptoms from headaches to respiratory irritation.
Engineering Controls: Local exhaust ventilation keeps concentrations low, cutting the odds of inhaled exposure for workers.
Personal Protective Equipment: Safety goggles, chemical-resistant gloves, and well-designed lab coats form a day-to-day line of defense. Respirators are needed in spaces with poor airflow or after accidental release. No one working day in and day out with this chemical should skimp on hand protection or rely on regular eyeglasses.
Appearance: Clear to slightly yellow liquid
Odor: Subtle, fishy or ammonia-like
Boiling Point: Around 134°C
Melting Point: Approximately -59°C
Flash Point: Close to 40°C (closed cup method), which makes storage and transport trickier in warm regions.
Solubility: Miscible with water in all proportions.
Vapor Pressure: Relatively low at room temperature but rises with heat.
Density: Roughly 0.89 g/cm³
pH: Basic—a fact that often contributes to both its usefulness and risk for chemical burns.
Chemical Stability: Keeps stable under normal room-temperature storage but not a good neighbor for acids or oxidizers.
Incompatible Materials: Strong acids, oxidizing agents, and acid chlorides top the list. Mixing these by accident can produce heat, fumes, and hazardous reaction products.
Hazardous Decomposition Products: Heating or burning can give rise to carbon monoxide, carbon dioxide, nitrogen oxides, and sometimes even formaldehyde.
Acute Toxicity: Not as deadly as some industrial chemicals, but ingesting even a modest amount produces nausea, vomiting, and abdominal pain.
Skin and Eye Irritation: Direct contact proves exceptionally irritating; prolonged exposure causes redness, burning, and—if ignored—longer-term dermatitis.
Inhalation Risks: Breathing vapors irritates the throat and respiratory tract. Factory workers exposed over months report headaches, sore throats, and fatigue.
Chronic Effects: Animal studies suggest long-term exposure could affect liver or kidney function, though evidence in humans stays sparse. No strong connection to cancer has emerged from available studies, but the irritation and systemic toxicity keep its hazards front-of-mind for occupational medicine professionals.
Aquatic Toxicity: This compound dissolves easily in water and can harm aquatic organisms if enough gets into rivers, streams, or waste treatment systems.
Persistence and Degradability: Microbial action breaks it down fairly quickly under typical environmental conditions, but large accidental leaks could overwhelm natural systems.
Bioaccumulation: No major tendency to accumulate in animal tissue, but chronic low-level releases still require careful management around water sources.
Waste Handling: Disposal through approved chemical waste incinerators drastically reduces hazards. Pouring it down the drain or into open ground just multiplies environmental and human health problems.
Containers: Empty drums or bottles should be triple-rinsed before recycling or disposal; residue alone can trigger regulatory penalties or worker harm.
Shipping Name: N,N-Dimethylethanolamine, regulated as a flammable liquid in many regions.
UN Number: Often ships under UN 2051.
Transport Hazards: Labeling and leakproof containers keep workers and environmental responders safer in the event of accidents.
Packaging: Regulations may require special drums or inner packagings, especially for air or sea transit.
OSHA: Recognized as a hazardous chemical, subject to all relevant workplace chemical safety rules.
EPA and International: Distribution, disposal, and environmental releases sit under tight controls in most industrialized countries.
Right-to-Know: Workers deserve ready access to safety data, and manufacturers must flag known risks on every container. Facilities using substantial quantities usually carry extra site-specific permits or environmental tracking requirements.
