Product Name: Diethylamine
Chemical Formula: C4H11N
CAS Number: 109-89-7
Manufacturer: Various reputable chemical suppliers
Recommended Use: Laboratory reagent, chemical production intermediate, corrosion inhibitor manufacturing, rubber processing, solvents
Emergency Contact Number: Provided by the supplier or local poison control agency
SDS Number: Available from each manufacturer
Synonyms: DEA, N,N-Diethylamine, Ethanamine, N-ethyl-, N-ethylmethanamine
Address: Refer to supplier-specific documentation for physical address details
Hazard Class: Flammable liquid and vapor; Toxic by inhalation, ingestion, and skin contact; Corrosive to tissues
GHS Classification: Flammable liquids (Category 2), Acute toxicity (oral, dermal, inhalation, Category 3), Skin corrosion (Category 1B), Eye damage (Category 1)
Signal Word: Danger
Hazard Statements: H225 (Highly flammable liquid and vapor), H301 (Toxic if swallowed), H311 (Toxic in contact with skin), H331 (Toxic if inhaled), H314 (Causes severe skin burns and eye damage)
Pictograms: Flame, Skull and crossbones, Corrosion
Precautionary Statements: Keep away from heat/sparks/open flames/hot surfaces. No smoking; Do not breathe fumes/vapors; Wear protective gloves/protective clothing/eye protection/face protection; IF ON SKIN: Remove contaminated clothing, rinse skin with water/shower.
Chemical Name: Diethylamine
Concentration: >99% (Typical commercial sample)
Impurities: Water (traces), Ethylamine or Triethylamine (minor traces in technical grades)
EC Number: 203-716-3
Molecular Weight: 73.14 g/mol
General Measures: Move person to fresh air, keep warm and at rest, remove contaminated clothing immediately
Inhalation: Remove from exposure, give oxygen if breathing is difficult. Seek medical attention for symptoms like coughing, chest pain, or shortness of breath
Skin Contact: Flush skin with plenty of water for at least 15 minutes, wash with soap and water, do not reuse contaminated clothing until thoroughly cleaned
Eye Contact: Immediately flush eyes with plenty of water for at least 15 minutes, lifting upper and lower eyelids occasionally. Remove contact lenses if present and easy to do. Seek medical attention promptly
Ingestion: Rinse mouth with water, do not induce vomiting. Never give anything by mouth to an unconscious person. Get emergency medical attention.
Suitable Extinguishing Media: Dry chemical, carbon dioxide, alcohol-resistant foam. Use water spray to cool fire-exposed containers
Unsuitable Extinguishing Media: Straight water stream (risk of spreading fire or violent reaction)
Hazardous Combustion Products: Nitrogen oxides, carbon monoxide, carbon dioxide, ammonia, potentially toxic vapors
Special Protective Equipment: Full protective gear including self-contained breathing apparatus. Keep upwind, avoid inhalation of fumes
Special Procedures: Cool nearby containers with water spray. Prevent runoff from entering drains, sewers, or waterways.
Personal Precautions: Evacuate unnecessary personnel. Use personal protective equipment such as chemical goggles, gloves, and protective clothing. Ensure adequate ventilation.
Environmental Precautions: Prevent liquid from entering sewers, surface water, or groundwater. Notify environmental authorities in case of large spills.
Containment Methods: Absorb liquid with inert material (sand, vermiculite, earth). Stop leak if safe to do so without risk. Use non-sparking tools.
Cleanup Procedures: Collect residue in sealable containers for proper disposal. Ventilate the area thoroughly. Wash spill site with large amounts of water after material pick-up is complete.
Handling Recommendations: Use only with proper ventilation. Avoid contact with skin, eyes, and clothing. Do not inhale vapor or spray. Keep away from heat, sparks, and open flames. Use grounded and bonded equipment.
Safe Storage Conditions: Store in tightly closed containers in a cool, dry, well-ventilated area designed for flammable and corrosive chemicals. Keep separate from oxidizing agents, acids, and halogens.
Incompatible Materials: Strong acids, oxidizers, halogenated compounds. Avoid prolonged storage at temperatures above room temperature.
Secondary Containment: Use spill trays or secondary containment if possible in storage areas.
Occupational Exposure Limits: OSHA PEL: 25 ppm (75 mg/m³) TWA; ACGIH TLV: 5 ppm (15 mg/m³) TWA
Engineering Controls: Local exhaust ventilation, chemical fume hood, explosion-proof electrical equipment.
Personal Protective Equipment: Chemical splash goggles, face shield, neoprene or nitrile gloves, long-sleeved protective clothing, flame-resistant lab coat, rubber boots.
Respiratory Protection: Suitable respirator (NIOSH/MSHA approved) for airborne concentrations above exposure limits.
Hygiene Measures: Wash hands thoroughly after handling. Remove contaminated clothing before eating, drinking, or smoking. Do not eat, drink, or smoke in the work area.
Appearance: Colorless to pale yellow liquid
Odor: Strong, fish-like, ammoniacal odor
Melting Point: -49 °C
Boiling Point: 55.5–56 °C
Flash Point: -28 °C (closed cup)
Flammability: Highly flammable liquid and vapor
Vapor Pressure: 470 mmHg at 20 °C
Vapor Density: 2.5 (air = 1)
Solubility in Water: Completely miscible
Density: 0.707 g/cm³ at 20 °C
pH: Alkaline (in solution)
Partition Coefficient (n-octanol/water): 0.31
Auto-ignition Temperature: 312 °C
Chemical Stability: Stable at recommended storage conditions in tightly sealed containers
Hazardous Reactions: Ignites easily in air and reacts with strong oxidizers, acids, or halogenated materials, forming potentially explosive mixtures
Decomposition Products: May yield nitrogen oxides, carbon monoxide, carbon dioxide, ammonia gas under fire conditions
Polymerization: Does not undergo hazardous polymerization on its own
Other Reactivity Information: Deteriorates in contact with iron, copper, and other metals over time, corroding vessels.
Routes of Exposure: Inhalation, dermal contact, ingestion, eye contact
Acute Toxicity: Oral (LD50 rat): 540 mg/kg; Dermal (LD50 rabbit): 820 mg/kg; Inhalation (LC50 rat, 4h): 3.52 mg/L
Effects of Exposure: Burning of eyes and skin, coughing, headache, dizziness, difficulty breathing, nausea, vomiting, abdominal pain, potential unconsciousness
Potential Health Hazards: Severe irritation, corrosive burns on skin and eyes, respiratory tract damage, risk of pulmonary edema, central nervous system depression
Chronic Effects: Prolonged or repeated exposure may lead to dermatitis, respiratory sensitization, or chronic bronchitis symptoms
Carcinogenicity: No classification as human carcinogen by IARC or NTP; not listed as carcinogenic under OSHA regulations
Other Risks: May worsen conditions like asthma or emphysema among exposed workers.
Aquatic Toxicity: Toxic to aquatic organisms; LC50 (fish, 96h): 116 mg/L (Pimephales promelas)
Persistence and Degradability: Rapidly biodegradable in aquatic environment
Bioaccumulative Potential: Low, based on partition coefficient
Soil Mobility: Expected to have high mobility; highly soluble and volatile, can contaminate groundwater if released
Environmental Fate: Volatilizes quickly from water surfaces, undergoes aerobic degradation
Other Ecological Risks: Sudden releases may cause short-term harm to aquatic life due to oxygen depletion and pH elevation.
Waste Disposal Methods: Incineration at specialized chemical waste facilities equipped with scrubbers, following all federal and local regulations
Container Disposal: Triple-rinse empty containers, puncture, and send for recycling or chemical waste processing
Precautions for Disposal: Prevent unintended releases, avoid disposal in natural waterways, and comply with hazardous waste classification procedures
Regulatory Considerations: Classified as hazardous waste under RCRA in the United States; check local, regional, and national regulations for additional disposal requirements
UN Number: UN1154
Proper Shipping Name: Diethylamine
Transport Hazard Class: 3 (Flammable Liquid), 8 (Corrosive)
Packing Group: I (highest danger)
Labels Required: Flammable Liquid (red, with flame icon), Corrosive
Marine Pollutant: Not listed as a marine pollutant, but avoid releases to waterways
Special Precautions for Transport: Keep containers upright and tightly sealed; protect from heat, open flames, and strong acids or oxidizers; trained personnel only
OSHA: Hazardous Chemical; OSHA-compliant safety programs required
EPA: SARA Title III: Listed as an extremely hazardous substance; threshold planning quantity applies (TPQ 500 lbs); CERCLA reportable quantity: 1,000 lbs
TSCA: Listed in the U.S. Toxic Substances Control Act inventory
State Regulations: Right-to-Know lists in New Jersey, Pennsylvania, Massachusetts (regulatory limits for workplaces)
International Inventories: Listed on EINECS (EU), DSL (Canada), AICS (Australia), ENCS (Japan)
Workplace Restrictions: Worker safety training required; access limited to authorized, trained personnel
Other Notable Regulations: Compliance required with fire safety codes, environmental discharge laws, and chemical hygiene plans.
