Chemical Name: Tetramethylammonium Iodide
Synonyms: TMAI
Chemical Formula: C4H12IN
Molecular Weight: 201.05 g/mol
Recommended Use: Laboratory reagent, organic synthesis intermediate
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GHS Classification: Acute toxicity (oral, inhalation, dermal); Eye irritation; Skin irritation
Signal Word: Warning
Hazard Statements: Harmful if swallowed; Causes skin and eye irritation; May cause respiratory irritation
Precautionary Statements: Avoid breathing dust; Wash exposed skin thoroughly after handling; Use only outdoors or in a well-ventilated area
Pictograms: Exclamation mark
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Substance: Tetramethylammonium Iodide
Chemical Formula: C4H12IN
CAS Number: 75-59-2
Concentration: 100% (pure substance)
Other Impurities: None known at time of publication
Eye Contact: Flush eyes with plenty of water for at least 15 minutes, lifting eyelids to ensure thorough rinsing; seek medical attention if irritation persists
Skin Contact: Remove contaminated clothing; wash skin with soap and water for at least 15 minutes; seek medical advice if redness or discomfort continues
Inhalation: Move person to fresh air; keep comfortable for breathing; administer artificial respiration if not breathing; obtain medical assistance if symptoms appear
Ingestion: Rinse mouth with water; do not induce vomiting; seek immediate medical attention
Most Important Symptoms: Irritation to eyes, skin, and mucous membranes; nausea or respiratory symptoms after inhalation or ingestion
Suitable Extinguishing Media: Water spray, dry chemical, foam, carbon dioxide (CO2)
Unsuitable Extinguishing Media: Strong water jets
Specific Hazards: Emits toxic fumes containing hydrogen iodide and nitrogen oxides if exposed to high temperatures or fire
Protective Equipment: Firefighters require self-contained breathing apparatus and full protective gear
Special Procedures: Cool exposed containers with water spray; avoid inhaling combustion products
Personal Precautions: Wear suitable protective clothing including gloves, goggles, and dust mask; avoid creating or inhaling dust
Environmental Precautions: Prevent entry into sewers or waterways; contain spillage with inert material such as dry sand
Cleanup Methods: Gather spilled material using non-sparking tools; place in suitable chemical disposal container; ventilate area
Disposal: Dispose of collected material according to local, regional, and national regulations
Decontamination: Wash spill area thoroughly with water after material pick up is complete
Handling: Use personal protective equipment; handle in a well-ventilated area or fume hood; avoid contact with skin, eyes, and clothing
Storage: Store in tightly sealed container; keep in cool, dry, well-ventilated area, away from incompatible substances such as strong oxidizers and acids
Special Precautions: Avoid violent impacts or dropping containers; store away from sunlight and moisture
Hygiene Measures: Wash hands thoroughly after handling; avoid eating, drinking, or smoking during use
Occupational Exposure Limits: No specific exposure limits have been established for tetramethylammonium iodide
Engineering Controls: Use local exhaust ventilation to minimize dust exposure; work in a fume hood if possible
Personal Protection: Use chemical-resistant gloves (nitrile or neoprene), safety goggles or face shield, and lab coat
Respiratory Protection: Wear particulate respirator if dust or aerosols are generated
Other Protective Equipment: Emergency eyewash and safety shower available in work area
Appearance: White, crystalline powder
Odor: Odorless
Odor Threshold: Not applicable
pH: 5–8 (aqueous solution)
Melting Point: 296–300 °C
Boiling Point: Not applicable (decomposes)
Flash Point: Not flammable
Evaporation Rate: Not applicable
Flammability: Not flammable
Vapor Pressure: Negligible
Vapor Density: Not available
Solubility: Soluble in water and alcohol
Partition Coefficient (n-octanol/water): Not available
Auto-Ignition Temperature: Not available
Decomposition Temperature: Above 300 °C
Viscosity: Not applicable
Chemical Stability: Stable under normal storage and handling conditions
Reactivity: Not reactive under regular use
Hazardous Reactions: May react with strong oxidizing agents
Conditions to Avoid: Excessive heat, moisture, light, strong acids, and oxidizers
Decomposition Products: Hydrogen iodide, ammonia, nitrogen oxides, methyl iodide possible
Polymerization: Will not occur
Acute Toxicity: Harmful by ingestion, inhalation, and skin contact; low to moderate toxicity in animal tests based on similar compounds
Irritation: Causes eye and skin irritation; inhalation may lead to coughing or shortness of breath
Sensitization: Not known to cause skin or respiratory sensitization
Chronic Effects: No definitive long-term human data available; some quaternary ammonium compounds have demonstrated delayed effects after repeated high exposures
Carcinogenicity: Not listed as a carcinogen by IARC, NTP, or OSHA
Ecotoxicity: May be toxic to aquatic organisms based on similar quaternary ammonium compounds
Persistence and Degradability: Data not available; suspected to be poorly biodegradable
Bioaccumulation Potential: No data available
Mobility in Soil: Expected to have some mobility; soluble in water
Other Adverse Effects: Release to the environment should be avoided to prevent impact on water bodies and soil
Disposal Methods: Dispose of as hazardous chemical waste using licensed waste disposal contractors; follow local regulations
Container Disposal: Rinse containers thoroughly and dispose of as chemical waste
Precautions: Do not release into drains, soil, or natural waterways
Waste Codes: Consult local hazardous waste code listings for proper classification
UN Number: Not classified as a dangerous good by transport regulations
Proper Shipping Name: Tetramethylammonium Iodide
Transport Hazard Class: Not regulated
Packing Group: Not regulated
Environmental Hazards: Avoid release to the environment during transportation
Transport Precautions: Ensure container integrity and proper labeling during transit
TSCA Status: Listed on the United States TSCA Inventory
REACH Status: Registered or exempt in the European Union as laboratory chemical
OSHA Hazard Status: Classified as hazardous according to OSHA Hazard Communication Standard
SARA Title III: Not subject to reporting under SARA Sections 302, 304, 313
California Proposition 65: Not listed
WHMIS Classification (Canada): Class D2B: Toxic Material Causing Other Toxic Effects
Other Regulations: Check country- and state-specific regulations for additional information
