Chemical Name: N,N-Diethylhydroxylamine
Common Names: DEHA, Diethylhydroxylamine
Chemical Formula: C4H11NO
CAS Number: 3710-84-7
Recommended Uses: Oxygen scavenger, polymerization inhibitor, chemical intermediate, corrosion inhibitor
Manufacturer: Refer to packaging or supplier documentation for contact details
Emergency Contact: Seek local emergency services or refer to supplier’s emergency hotline
GHS Classification: Acute toxicity (Oral Category 4), Eye irritation (Category 2A), Skin irritation (Category 2), Specific Target Organ Toxicity – Single Exposure (Category 3)
Pictograms: Exclamation mark
Signal Word: Warning
Hazard Statements: Harmful if swallowed; causes skin and eye irritation; may cause drowsiness or dizziness
Precautionary Statements: Avoid breathing vapors; wash hands thoroughly after handling; avoid contact with eyes, skin, and clothing; use only outdoors or in well-ventilated areas; store locked up and keep container tightly closed
Substance: N,N-Diethylhydroxylamine
Purity: 98% or higher (industrial grade)
Impurities: Minor traces of triethylamine and other aliphatic amines may be present
Other Ingredients: Not relevant for main hazard profile
Inhalation: Move exposed person to fresh air, support breathing as needed, seek medical advice if symptoms develop
Skin Contact: Remove contaminated clothing immediately, rinse exposed skin thoroughly with water and mild soap, get medical attention if irritation persists
Eye Contact: Rinse with gentle stream of water for several minutes, remove contact lenses if present, continue rinsing, seek medical help if irritation remains
Ingestion: Rinse mouth, do not induce vomiting, give water to drink if conscious, contact physician or local poison control
Symptoms: Throat irritation, headache, dizziness, skin redness, eye discomfort
Suitable Extinguishing Media: Water fog, foam, dry chemical, carbon dioxide
Unsuitable Extinguishing Media: Do not use direct water stream as it may spread fire
Hazardous Combustion Products: Nitrogen oxides, carbon monoxide, carbon dioxide, possible toxic organic vapors
Special Fire Fighting Procedures: Wear self-contained breathing apparatus and full protective gear, keep containers cool with water spray
Unusual Fire Explosion Hazards: Vapors may form explosive mixtures with air in poorly ventilated areas
Personal Precautions: Wear chemical-resistant gloves, goggles, and protective clothing, ventilate area
Environmental Precautions: Prevent spillage from entering drains, soil, or water bodies, inform relevant local authorities of large releases
Spill Cleanup Methods: Absorb with inert material such as sand or earth, transfer to suitable labeled containers, wash area with water while avoiding runoff
Disposal: Dispose of cleanup materials in accordance with local regulations
Safe Handling Guidance: Avoid inhalation and direct contact, use with appropriate ventilation, do not eat, drink, or smoke while handling, wash hands after handling
Storage Recommendations: Store in tightly closed, properly labeled containers away from heat, sparks, open flame, and incompatible substances such as strong oxidizers
Storage Conditions: Keep in a cool, dry, well-ventilated place, protect from direct sunlight and moisture
Other Precautions: Empty containers may contain harmful residues, do not reuse
Engineering Controls: Provide local exhaust ventilation in work areas, ensure eyewash stations and safety showers are accessible
Personal Protective Equipment (PPE): Chemical splash goggles, chemical-resistant gloves (such as nitrile or neoprene), protective clothing, approved respirator if exposure limits are exceeded
Occupational Exposure Limits: No established OSHA PEL; minimize exposure as much as practical, follow company workplace exposure guidelines
Hygiene Measures: Wash exposed skin thoroughly after handling, launder contaminated clothing before reuse
Appearance: Colorless to pale yellow liquid
Odor: Slight amine odor
Odor Threshold: Not easily determined, often detectable at low concentrations
pH: Data not available, tends toward neutral
Melting Point: -34 °C
Boiling Point: 126°C
Flash Point: 58°C (closed cup)
Evaporation Rate: Not readily available
Flammability: Flammable liquid
Vapor Pressure: 12 mm Hg at 25°C
Vapor Density: Heavier than air
Relative Density: ~0.89 g/cm³
Solubility: Miscible with water
Partition Coefficient (n-octanol/water): <0.3 (estimated)
Decomposition Temperature: Decomposes above 180°C
Viscosity: Not readily available
Chemical Stability: Stable under typical storage and use conditions, can slowly decompose upon long-term storage
Conditions to Avoid: High temperatures, open flames, sparks, exposure to air for extended periods
Incompatible Materials: Strong oxidizing agents, acids, chlorinating agents
Hazardous Decomposition Products: Ammonia, nitrogen oxides, carbon monoxide, carbon dioxide
Hazardous Reactions: May react violently with incompatible materials
Acute Toxicity: Oral LD50 (rat) 930 mg/kg; Inhalation LC50 data not available; Dermal LD50 >2,000 mg/kg (rabbit)
Likely Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Symptoms of Exposure: Nausea, headache, skin redness, dizziness, eye irritation
Chronic Effects: No long-term studies in humans; prolonged skin contact may lead to dermatitis
Mutagenicity, Carcinogenicity, Reproductive Toxicity: Not listed by IARC, NTP, or OSHA as carcinogenic; genetic toxicity not strongly indicated in available studies
Aquatic Toxicity: Moderate toxicity toward fish and aquatic organisms; LC50 (96hr, fish) is approximately 80 mg/L
Persistence and Degradability: Biodegrades slowly in water and soil
Bioaccumulative Potential: Low, log Kow below 1
Mobility in Soil: Highly mobile due to water solubility
Other Adverse Effects: Release to environment should be minimized to protect aquatic life
Waste Treatment Methods: Dispose of waste and residues according to local, regional, national, and international regulations
Container Disposal: Rinse empty containers, then follow all regulations for chemical container disposal
Hazardous Waste Status: May meet criteria for hazardous waste due to toxicity and ignitability
UN Number: UN2810
UN Proper Shipping Name: Toxic, Liquid, Organic, N.O.S. (contains N,N-Diethylhydroxylamine)
Transport Hazard Classes: 6.1 (Toxic substance)
Packing Group: III
Marine Pollutant: Not classified as marine pollutant
Special Transport Precautions: Comply with local, national, international transport regulations
Labeling Requirements: Toxic substance labels required for shipping
TSCA: Listed on US TSCA Inventory
EINECS/ELINCS: Listed in EU databases
WHMIS Classification: Class D2B (Toxic Material with other toxic effects), Class B3 (Combustible Liquid)
SARA Title III: Not listed under Section 313
California Proposition 65: Not listed as known to cause cancer or reproductive toxicity
Other Regulations: Comply with all chemical handling, storage, distribution regulations as provided by local, state, and federal authorities
