Product Name: Didecyl Methyl Tertiary Amine
Chemical Family: Alkyl amines
Synonyms: Didecyldimethylamine
Recommended Use: Used as a biocide, disinfectant, and surfactant in various industries
Manufacturer: Refer to supplier documentation for specific manufacturer details
Emergency Contact: Emergency response numbers provided by supplier or national emergency response centers
CAS Number: 7173-51-5
UN Number: 2920
EC Number: 230-525-2
GHS Classification: Corrosive to skin and eyes, acute toxicity through inhalation and ingestion, environmental hazard for aquatic life
Hazard Symbols: Corrosion, exclamation mark, environment
Signal Word: Danger
Hazard Statements: Causes severe skin burns and eye damage; May be harmful if inhaled; Toxic to aquatic life with long lasting effects
Precautionary Statements: Avoid breathing vapors and contact with skin, eyes, and clothing; Use only in well-ventilated areas; Wear protective equipment
Potential Health Effects: Can cause respiratory irritation, burns, and potential systemic toxicity if ingested or absorbed through skin
Chronic Effects: Repeated exposure might result in sensitization or long-term effects on organs with continuous misuse
Chemical Name: Didecyl Methyl Tertiary Amine
Concentration: 95% or higher by weight (industrial grades may contain minor impurities)
Impurities: Water (<1%), trace tertiary amines (<1%)
Hazardous Components: Didecyl dimethyl amine comprises the main active ingredient, all of which contribute to physical and chemical hazards labeled above
Molecular Formula: C21H47N
General Advice: Seek immediate medical attention for all exposures. Remove contaminated clothing and shoes. Do not delay treatment.
Eye Contact: Rinse cautiously with water for at least 15 minutes, holding eyelids open. Remove contact lenses if safe. Immediate eye examination needed.
Skin Contact: Wash immediately with copious amounts of water and soap. Get medical attention for persistent irritation or burns. Remove any contaminated clothing.
Inhalation: Move person to fresh air. Keep warm and at rest. Provide oxygen if breathing is difficult. Check for breathing, begin CPR if required.
Ingestion: Do not induce vomiting. Rinse mouth thoroughly. Never give liquids to an unconscious person. Seek immediate medical assistance.
Note for Physicians: Treatment is symptomatic and supportive, monitor airway, breathing, and circulation. Burns may require surgical intervention.
Suitable Extinguishing Media: Alcohol-resistant foam, dry chemical, carbon dioxide. Water spray only to cool containers, not for direct extinguishment
Specific Hazards: May emit toxic fumes of nitrogen oxides and carbon oxides on combustion. Vapors may form explosive mixtures with air at high temperatures
Protective Equipment: Firefighters need full protective suit and self-contained breathing apparatus to guard against inhalation and skin exposure
Firefighting Instructions: Approach from upwind and remove containers from risk area if safe. Cool exposed tanks with water spray. Stay clear of runoff.
Flash Point: Above 90°C (estimated, check supplier data)
Autoignition Temperature: Not specifically established; generally above 200°C for similar amines
Personal Precautions: Evacuate area. Ventilate surrounding space. Avoid breathing vapors or direct skin and eye contact.
Environmental Precautions: Prevent entry into sewers, waterways, or soil. Notify appropriate authorities if product enters environment.
Containment: Use inert materials like earth or sand to contain spills.
Clean Up Methods: Wear proper PPE including gloves, goggles, and protective suit. Absorb liquid with inert absorbent, collect in labeled containers for disposal. Wash spill area thoroughly.
Handling: Minimize airborne concentrations by using local exhaust ventilation. Wear approved gloves, goggles, face protection, and chemical-resistant clothing.
Precautions: Avoid sources of ignition. Do not breathe vapors or mist. Prevent contact with incompatible substances including strong acids and oxidizers.
Storage: Store in a cool, dry, well-ventilated area. Keep containers tightly closed, out of reach of children. Do not store near food or animal feed.
Incompatibilities: Strong oxidizing agents, acids, and some plastics.
Engineering Controls: Use local exhaust ventilation and process enclosure to avoid exposure. Emergency eye wash stations and safety showers required near work area.
Exposure Limits: No established ACGIH or OSHA exposure limits. Follow best practice occupational exposure management.
PPE: Safety goggles or face shield for eye protection. Nitrile or neoprene gloves, chemical resistant suit for skin. Respirator approved for organic vapors for high concentration or spill response.
Hygiene Measures: Wash hands and face after handling. Remove contaminated clothing and clean thoroughly before reuse. No eating, drinking, or smoking in work areas.
Appearance: Clear to pale yellow liquid
Odor: Mild, characteristic amine odor
Odor Threshold: Not specifically established
pH: Alkaline (typically between 10 and 12 when measured as a 1% solution)
Melting Point: Below room temperature (estimated -10°C)
Boiling Point: Approximately 200°C
Flash Point: Above 90°C (closed cup)
Evaporation Rate: Slow
Flammability: Slightly flammable at elevated temperatures
Vapor Pressure: Very low at 20°C
Vapor Density: Greater than 1 (air = 1)
Solubility: Slightly soluble in water, miscible in most organic solvents
Partition coefficient (Kow): High, indicating potential to bioaccumulate
Viscosity: Moderate
Relative Density: 0.85–0.89 g/cm³
Chemical Stability: Stable under standard storage conditions if kept dry and cool
Conditions to Avoid: Heating above flash point, exposure to strong sunlight, sources of ignition, excessive moisture
Incompatible Materials: Acids, strong oxidizers, strong reducing agents, and some plastics
Hazardous Decomposition Products: Nitrogen oxides, carbon monoxide, carbon dioxide, amines, possibly toxic gases on combustion
Hazardous Polymerization: Will not occur under normal usage and storage
Acute Toxicity: LD50 (oral, rat) 200-700 mg/kg; LD50 (dermal, rabbit) 200-1000 mg/kg
Skin Corrosion/Irritation: Strongly corrosive; causes deep tissue destruction on contact
Serious Eye Damage/Irritation: Causes severe, permanent eye injury
Respiratory Sensitization: Prolonged inhalation may cause respiratory tract irritation
Skin Sensitization: Repeated contact may cause allergic dermatitis
Mutagenicity/Carcinogenicity: No conclusive data showing carcinogenic or mutagenic effects; not listed by IARC, ACGIH, NTP, or OSHA
Other Data: Overexposure by any route can cause systemic toxicity including effects on liver or kidneys with chronic misuse
Ecotoxicity: Highly toxic to aquatic organisms, both acute and long-term. LC50 for fish: 0.2–2 mg/L (96h, varied species)
Bioaccumulation Potential: Substantial; high log Kow suggests that bioaccumulation in aquatic organisms is likely
Persistence and Degradability: Not readily biodegradable, persists in soil and sediment; breaks down slowly in environment
Mobility in Soil: Tends to adsorb to soil and organic matter; low mobility in groundwater expected
Other Effects: Disrupts cellular membranes in non-target organisms, alters aquatic ecosystem balance
Disposal Methods: Collect and dispose through licensed hazardous waste contractor. Do not discharge into drains, waterways, or soil.
Packaging Disposal: Triple rinse containers before disposal; consult local and national regulations.
Special Precautions: Classification as hazardous waste must comply with national/international legislation. Avoid direct handling or incineration without controls.
RCRA Status: Check against EPA listings; generally regulated as hazardous, non-recyclable waste.
UN Number: 2920
Proper Shipping Name: Corrosive liquid, flammable, n.o.s. (Didecyl methyl tertiary amine)
Hazard Class: 8 (Corrosive) / Secondary: 3 (Flammable)
Packing Group: II
Labels: Corrosive, Flammable
Environmental Hazards: Marine pollutant
Transport in Bulk: Follow MARPOL 73/78 Annex II and IBC Code requirements for bulk shipping
Special Precautions: Ensure compliant labeling, emergency response documentation, and segregation from incompatible chemicals
TSCA: Listed in the US Toxic Substances Control Act inventory
OSHA: Covered under Hazard Communication Standard
EPA: Designated as pesticide active ingredient, subject to FIFRA regulations
REACH: Registered under European chemicals legislation
WHMIS (Canada): Classified as D1B (Toxic) and E (Corrosive)
SARA Title III: Not listed as an extremely hazardous substance; general reporting required for releases
Other Classifications: Subject to regional environmental release controls, workplace safety standards, and pesticide regulations worldwide
Consumer Regulations: Restricted in consumer products; only professionals may use concentrated forms
