Product Name: Dimethyloctadecyl Tertiary Amine
Chemical Formula: C20H43N
Synonyms: N,N-Dimethyloctadecylamine; Octadecyl dimethylamine
CAS No.: 124-28-7
Recommended Use: Surface active agent, antistatic additive, emulsifier
Manufacturer/Supplier: Contact details of the supplier including address, phone number, and emergency phone numbers should be included directly from the source.
Emergency Contact: Refer to manufacturer’s information for 24-hour emergency hotlines related to chemical accidents.
Classification: Irritant to eyes and skin; environmentally hazardous substance, acute and chronic aquatic hazard.
Signal Word: Warning
Hazard Statements: Causes serious eye irritation; causes skin irritation; may be harmful if swallowed; harmful to aquatic life with long lasting effects.
Pictograms: Exclamation mark, Environmental hazard
Precautionary Statements: Wear safety gloves, protective clothing, and eye protection; avoid release to the environment; wash exposed skin thoroughly after handling; if eye irritation persists, seek medical advice.
Chemical Name: Dimethyloctadecyl Tertiary Amine
Concentration: Typically 98% or greater by weight for technical grade
Impurities: Minor content of other amines, moisture content below 0.5%
Additives: No additional stabilizers or preservatives usually added in bulk chemical supply.
General Advice: Remove contaminated clothing and shoes, flush affected area with water for at least 15 minutes.
Inhalation: Move person to fresh air, seek medical attention if symptoms such as coughing, shortness of breath, or irritation persist.
Skin Contact: Wash skin with soap and water, remove contaminated clothing, seek medical help if irritation continues.
Eye Contact: Rinse eyes cautiously with water for several minutes, remove contact lenses if present and easy to do, continue rinsing and get medical help.
Ingestion: Do not induce vomiting, rinse mouth, give water to dilute, seek immediate medical attention.
Note to Physician: Treat symptomatically; monitor for respiratory complications.
Suitable Extinguishing Media: Dry chemical powder, foam, carbon dioxide, water spray; do not use water jet as product may float and spread fire.
Specific Hazards Arising from Chemical: Produces nitrogen oxides and carbon oxides during combustion, vapors may be heavier than air.
Protective Equipment: Firefighters should wear self-contained breathing apparatus and full protective gear.
Advice for Firefighters: Move containers from fire area if safe to do, stay upwind, dike runoff water to prevent environmental contamination.
Personal Precautions: Use personal protective equipment including gloves, goggles, and coveralls; ensure adequate ventilation; avoid contact with spilled material.
Environmental Precautions: Prevent further leakage or spillage if safe; do not permit product to enter drains, waterways, or soil.
Clean-Up Methods: Collect spilled material in labeled containers using non-sparking tools, absorb residue with inert material such as sand or earth, clean spill area thoroughly.
Disposal of Waste: Place spill waste in closed, labeled containers and manage in accordance with local regulations.
Handling: Wear appropriate protective gear, work in well-ventilated areas, avoid breathing vapors or mists, wash hands before eating or smoking, use only non-sparking tools, handle away from sources of ignition.
Storage: Store in tightly closed containers, in a cool, dry, well-ventilated area, separate from oxidizing agents, acids, and foodstuffs, store away from direct sunlight and heat sources, maintain temperature between 2°C and 40°C for product stability.
Incompatible Materials: Avoid contact with strong oxidizers, acids, and halogenated compounds.
Exposure Limits: No specific occupational exposure limit established for Dimethyloctadecyl Tertiary Amine; general control as for nuisance dusts and vapors, keep exposure as low as possible.
Engineering Controls: Use local exhaust ventilation, process enclosure, or other engineering controls to reduce airborne concentrations.
Personal Protective Equipment:
Respiratory Protection: Use of NIOSH-approved respirators for organic vapor is suggested for dusty or vapor-rich environments.
Skin Protection: Use chemical-resistant gloves, aprons, and boots.
Eye/Face Protection: Wear chemical safety goggles or face shield.
Hygiene Measures: Remove and wash contaminated clothing, wash hands and face after work, no eating or drinking in work area.
Appearance: White to pale yellow waxy solid or flakes
Odor: Mild amine odor
pH: 10 – 12 (10% solution in water)
Melting Point: Approximately 52°C – 54°C
Boiling Point: Decomposes before boiling
Flash Point: >140°C (closed cup)
Solubility: Insoluble in water; soluble in alcohol, chloroform, and other organic solvents
Vapor Pressure: Negligible at ambient temperature
Relative Density: 0.80 – 0.82 (20°C)
Partition Coefficient (n-octanol/water): High, indicating potential for bioaccumulation
Viscosity: Not applicable
Auto-ignition Temperature: >220°C
Chemical Stability: Stable under recommended storage and handling conditions.
Conditions to Avoid: Excessive heat, open flames, direct sunlight
Materials to Avoid: Strong acids, oxidizing agents, halogen compounds.
Decomposition Products: Nitrogen oxides, carbon oxides, trace ammonia, and hydrocarbons can form during thermal decomposition.
Hazardous Reactions: No hazardous polymerization, but exposure to incompatible materials may produce hazardous conditions.
Acute Toxicity: Oral LD50 (rat): >500 mg/kg; dermal LD50 (rabbit): >2000 mg/kg.
Skin Corrosion/Irritation: Causes skin irritation.
Serious Eye Damage/Irritation: Causes eye irritation.
Respiratory or Skin Sensitization: Possible skin sensitizer with prolonged exposure.
Carcinogenicity: Not listed by OSHA, NTP, or IARC as a human carcinogen.
Specific Target Organ Toxicity: Prolonged inhalation can affect respiratory tract.
Symptoms: Redness, pain, swelling at contact sites, coughing, and eye discomfort.
Long-term Exposure: No chronic toxicity studies in humans, recommend limiting exposure until further data.
Ecotoxicity: Acute and chronic toxicity to aquatic organisms; EC50 (Daphnia magna): <1 mg/L.
Persistence and Degradability: Moderately persistent, slow biodegradation.
Bioaccumulative Potential: High bioaccumulation potential due to hydrophobic nature.
Mobility in Soil: Binds to soil organic matter, not mobile in groundwater.
Other Adverse Effects: Potential to disrupt aquatic ecosystems, handle any release with extreme care.
Disposal Methods: Dispose by incineration in an approved facility; do not dispose of with household waste; comply with local, regional, national, and international regulations.
Contaminated Packaging: Triple rinse, puncture, and send for proper disposal.
Special Precautions: Avoid uncontrolled discharge; consult hazardous waste disposal authority for large or bulk disposal.
UN Number: 3077
Proper Shipping Name: Environmentally hazardous substance, solid, n.o.s. (contains Dimethyloctadecyl Tertiary Amine)
Transport Hazard Class: 9 (Miscellaneous dangerous substances)
Packing Group: III
Marine Pollutant: Yes
Label: Class 9, Marine Pollutant pictogram
Special Precautions: Secure containers upright, avoid accidental spillage during transit, comply with all applicable transportation regulations.
TSCA Inventory: Listed
REACH Registration: Registered as a substance in the European Union
OSHA: Hazardous chemical as defined by the Hazard Communication Standard (29 CFR 1910.1200)
SARA 313: Not subject to reporting requirements
WHMIS Classification: D2B (irritant) in Canada
California Proposition 65: Not listed as a carcinogen or reproductive toxin
Other National/International Regulations: Subject to relevant country, state, and local environmental, health and safety regulations regarding handling, storage, and disposal.
