Product Name: Trimethylsulfoxonium Bromide
Chemical Formula: C3H9BrOS
CAS Number: 1774-47-6
Synonyms: TMSB, Trimethylsulphoxonium Bromide
Recommended Use: Laboratory chemical, chemical synthesis
Supplier Details: Refer to manufacturer’s label for current contact information and emergency numbers
Emergency Telephone Number: Provided on shipping documents or product label
Classification: Eye irritation, Skin irritation, Acute toxicity (oral and inhalation)
Signal Word: Warning
Hazard Statements: Causes moderate to severe irritation to the eyes and skin; harmful if swallowed or inhaled; may cause respiratory irritation
Pictograms: Exclamation mark (GHS07)
Precautionary Statements: Avoid contact with skin, eyes, and clothing; do not breathe dust; wash hands thoroughly after handling
Potential Health Effects: Short-term exposures may lead to irritation of mucous membranes, coughing, headache, nausea; longer exposures increase risk of respiratory and gastrointestinal issues
Other Hazards: May react with strong oxidizing agents; avoid thermal decomposition
Chemical Identity: Trimethylsulfoxonium Bromide
Component: Trimethylsulfoxonium Bromide
Concentration: >98% pure
CAS Number: 1774-47-6
Impurities: Trace levels of residual solvents or byproducts possible (see supplier certificate)
Molecular Weight: 173.08 g/mol
Eye Contact: Immediately flush with plenty of water for at least 15 minutes, lifting upper and lower lids; seek medical attention
Skin Contact: Remove contaminated clothing; wash exposed area with soap and water; obtain medical advice if irritation develops or persists
Inhalation: Move to fresh air; keep at rest in a comfortable position; consult a healthcare professional if experiencing any symptoms.
Ingestion: Rinse mouth with water (never give anything by mouth if unconscious); do not induce vomiting; get medical help immediately
Symptoms and Effects: Burning, redness, pain, difficulty breathing, respiratory discomfort
Recommended Immediate Medical Attention: Eyes and ingestion exposure require prompt evaluation
Suitable Extinguishing Media: Water spray, foam, dry chemical, carbon dioxide
Unsuitable Media: Strong water jet
Hazardous Combustion Products: Carbon monoxide, carbon dioxide, hydrogen bromide, sulfur oxides
Protective Equipment: Wear self-contained breathing apparatus, full protective gear
Special Procedures: Isolate fire area; use non-sparking tools; ventilate confined spaces
Fire Hazards: Dust may form explosive mixtures with air in rare circumstances; chemical may decompose at elevated temperatures
Personal Protection: Put on gloves, goggles, laboratory coat, and dust mask; evacuate area if large spill
Environmental Precautions: Prevent release to drains, sewers, or waterways
Spill Cleanup: Sweep up and place in suitable closed container for chemical waste disposal; avoid raising dust; ventilate area
Disposal: Only trained personnel should handle significant cleanup; ensure thorough decontamination of spill area
Handling: Work in a fume hood or well-ventilated area; avoid generation of dust; keep away from incompatible substances; wear proper PPE
Storage: Store in original container, tightly closed, in a cool, dry, and well-ventilated place; keep away from sources of heat and ignition; segregate from oxidizers and acids
Incompatibilities: Strong oxidizing agents, strong acids
Other Precautions: Label containers clearly; check for degradation or container damage periodically
Occupational Exposure Limits: No specific established limits; minimize exposure
Engineering Controls: Local exhaust ventilation or containment enclosure; eyewash station and safety shower nearby
Personal Protective Equipment (PPE): Chemical-resistant gloves (nitrile, neoprene), safety goggles, laboratory coat, respiratory protection for high concentrations or dust scenarios
Hygiene Measures: Wash hands thoroughly after use; remove contaminated clothing promptly; do not eat, drink, or smoke in areas of use
Appearance: White to off-white crystalline powder
Odor: Slight, characteristic odor
Melting Point: 182-186°C
Boiling Point: Not applicable (decomposes before boiling)
Flash Point: No data available
Solubility: Soluble in water and polar organic solvents
Vapor Pressure: Negligible at room temperature
Density: About 1.5 g/cm³
pH: 5.5-6.5 (water solution)
Partition Coefficient: No data
Other Data: Stable under normal laboratory conditions
Chemical Stability: Stable under recommended handling and storage conditions
Possibility of Hazardous Reactions: Exothermic reactions with strong oxidizers; may generate heat and toxic gases
Conditions to Avoid: Heat, sources of ignition, moisture
Incompatible Materials: Acid chlorides, acid anhydrides, oxidizing agents, strong acids
Hazardous Decomposition Products: Carbon dioxide, carbon monoxide, hydrogen bromide, sulfur oxides
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Acute Toxicity: Harmful if inhaled or swallowed; short-term exposure may cause burning sensation, coughing, or nausea; LD50 values are not well documented but estimated as low-to-moderate toxicity
Chronic Effects: No long-term toxicity data available; repeated exposure could result in dermatitis or respiratory symptoms
Irritation: Causes skin and eye irritation based on structure and limited studies
Sensitization: Not classified as a skin or respiratory sensitizer
Carcinogenicity, Mutagenicity, Reproductive Toxicity: Not listed as a carcinogen by IARC, NTP, or OSHA; no mutagenicity or reproductive studies reported
Target Organs: Eyes, skin, respiratory tract
Medical Conditions Aggravated by Exposure: Pre-existing skin or lung conditions may worsen
Aquatic Toxicity: No specific data available; possible harmful effects on aquatic life based on chemical classification
Persistence and Degradability: No data, but organic compounds of this type may persist in the environment
Bioaccumulative Potential: Unlikely to bioaccumulate due to water solubility
Mobility in Soil: Likely mobile in moist soils due to high solubility
Other Adverse Effects: Avoid uncontrolled release; consult local authorities for guidance in case of environmental contamination
Waste Disposal Methods: Collect in tightly sealed, clearly labeled container; treat as hazardous laboratory chemical waste
Incineration: Preferred disposal option in accordance with official regulations; avoid direct release to sewers or waterways
Contaminated Packaging: Triple rinse, puncture, and dispose according to regulations
Special Considerations: Regulations vary locally; check national and regional requirements
UN Number: Consult your regulatory authority
Proper Shipping Name: Not classified as hazardous for transport under current international carriage rules; check with carrier for updated guidance
Transport Hazard Class: Not regulated as a dangerous good
Packing Group: Not assigned
Environmental Hazards: Not classified as marine pollutant
Special Precautions for User: Keep container intact and upright during transport; avoid exposure to moisture
Labeling: GHS-compliant hazard pictograms and signal word "Warning" required
Inventory Status: Included in TSCA (USA), REACH (EU—if applicable), DSL (Canada); check local chemical inventories for current status
SARA Title III - Sections 302/304, 311/312, 313: Not listed on hazardous substance lists
OSHA Hazards: Classified as hazardous based on skin, eye, and respiratory effects
Other Regulatory Data: Compliance with country and region-specific chemical management laws recommended; safety data sheet reviewed and updated in accordance with governing standards
