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Substance name: Dodecyltrimethylammonium Bromide
Chemical formula: C15H34BrN
Synonyms: Lauryltrimethylammonium bromide
CAS Number: 1119-94-4
Physical Appearance: White to off-white crystalline powder, faint odor
Usual Uses: Often brought into the lab or plant for its surfactant properties; shows up in detergents, cleaning agents, sometimes used in lab research as a phase transfer catalyst
Common Processing Points: Shows good solubility in water, creates foamy solutions, mixes gently with ethanol
Main Hazards: Causes skin and eye irritation, potentially severe if ignored
GHS Classification: Skin Irritation Category 2, Eye Irritation Category 2A, Acute Toxicity-Oral Category 4
Label Elements: Exclamation mark pictogram, warning signal word
Common Risk Factors: Direct skin or eye contact, inhalation of dust, accidental ingestion in busy work environments
Symptoms: Redness, pain, stinging on contact with skin and eyes; coughing or shortness of breath if dust gets into the lungs
Chronic Exposure Risks: Prolonged contact can dry out and crack skin, heighten allergies, cause issues for sensitive respiratory systems
Main constituent: Dodecyltrimethylammonium Bromide >98%
Additives: Usually isolated or minimally present; uncontaminated product sticks to single-component content
Impurities: Trace moisture sometimes picked up due to hygroscopic nature, but reputable supply chains certify high purity for critical uses
Skin Contact: Remove contaminated clothing, rinse thoroughly with running water, use mild soap if needed; don’t wait for soreness to set in
Eye Contact: Rinse for several minutes, keeping eyelids open, seek medical care if irritation lingers
Inhalation: Move person to fresh air, keep comfortable, observe for coughing or wheezing
Ingestion: Rinse mouth, give water if the person is alert, avoid forcing vomiting; seek immediate medical attention
Suitable Extinguishing Media: Water spray, dry powder, foam
Unusual Fire Hazards: Releases toxic gases like nitrogen oxides and hydrogen bromide on combustion
Protective Equipment: Full protective gear for firefighters, self-contained breathing apparatus
Advice: Remove people from area, cool surrounding storage, keep wind direction in mind, avoid inhaling fumes
Personal Protection: Immediately grab gloves, eye protection, dust mask
Spill Response: Scoop up powder carefully, avoid raising dust; use damp disposable cloths for small bits; ventilate area well
Environmental Caution: Avoid floor drains, hold back all waste for professional disposal, prevent runoff into surface water
Decontamination: Clean tools after use, launder contaminated clothing separately
Handling Tips: Limit direct contact, avoid eating or drinking near product; wash hands after use
Storage Guidelines: Cool, dry, well-ventilated area, tight-sealed container; keep away from oxidizing agents
Labeling and Signage: Clear hazard labels, shelf signs in storage areas
Housekeeping: Sweep up spills right away, maintain orderly storage, use spill trays if possible
Ventilation: Use local exhaust or fume extraction in processing areas
Personal Protection: Nitrile gloves, chemical safety goggles, dust mask (P2/FFP2 rating)
Engineering Controls: Closed systems recommended for bulk handling
Hygiene: Regular handwashing after work, keep personal protective gear clean and dry, change gloves often in damp work
Appearance: White or slightly off-white crystalline powder
Odor: Barely noticeable, faint amine-like smell
Melting Point: Around 245–250°C
Solubility: Easily dissolves in water and ethanol
Density: 1.2 g/cm³ at room temperature
pH (1% solution): Neutral to slightly basic
Vapor Pressure: Negligible under normal handling
Partition Coefficient: Tends to settle in organic phases in mixtures
Stability in Solution: Resists rapid decomposition at ambient conditions
Chemical Stability: Stable under dry, cool conditions
Reactivity: Holds up well in the presence of most common reagents; reacts vigorously with strong oxidizers
Thermal Decomposition: May give off toxic fumes like hydrogen bromide and nitrogen oxides above 250°C
Incompatibilities: Strong acids, strong bases, and chemical oxidizers are best stored separately
Polymerization: No danger of hazardous polymerization under expected conditions
Likely Routes of Exposure: Skin contact, eye contact, inhalation of dust
Acutely Toxic: Moderate toxicity by oral route; can trigger stomach distress and vomiting
Local Effects: Redness, irritation, dryness on skin; burning or stinging in eyes
Sensitization: Not widely reported but repeated handling may cause increased sensitivity
Long-Term Effects: Ongoing exposure raises risk of dryness and cracking of skin; no clear link to carcinogenicity or mutagenicity from current literature
LD50 Values (oral, rat): Sits nearly 370 mg/kg, so not among the most hazardous but definitely not harmless
Environmental Impact: Toxic to aquatic life at low concentrations
Persistence: Sticks around in water, doesn’t break down rapidly
Bioaccumulation: Shows some tendency to persist in organisms due to its surfactant nature
Waterways: Entry into streams and rivers brings risk of disrupting aquatic organisms
Wastewater Treatment: Reduces efficiency of some biological treatment methods, especially in high loads
Proper Disposal Route: Collect waste into sealed, labeled containers
Disposal Methods: Send for hazardous waste incineration or chemical treatment
Wastewater Handling: Treat all rinses and wash-downs as contaminated, pass through dedicated disposal systems
Recycling: Commercial feasibility for recycling remains low due to contamination risk
Prohibitions: Never pour down the drain or into soil
Transport Classification: Not classified as hazardous for most transport modes, though large shipments demand labeling for irritant properties
Packing Instructions: Secure packaging to prevent dust escape, sealed drums or jars
Precautionary Hot-Weather Shipping: Avoid prolonged exposure to heat or direct sunlight
Spill Procedures During Transport: Contain immediately, inform relevant local authorities if substantial spills occur
Compatibility: Pack separately from strong acids and oxidizers
Relevant Regulations: Regulated under chemical safety and workplace safety laws in most industrial countries
Labeling: Requires hazard symbols and handling instructions according to GHS standards
Environmental Legislation: Minimum discharge limits into water systems, enforcement on non-compliance
Worker Safety: Employers must provide training and protective gear as standard practice
Transportation: Subject to chemical transport guidelines in larger volumes, exemption for small samples
