Product Name: Mercaptodimethylamine Oxide
Synonyms: Dimethylaminomercaptan Oxide
Chemical Formula: C2H7NOS
CAS Number: 45837-61-2
Recommended Use: Intermediate in chemical synthesis, surface-active agent
Manufacturer/Supplier: Refer to product label or supplier documentation for contact information
Emergency Contact: Local emergency number or Poison Control Center
Product Code: Check supplier documentation
Classification: Acute toxicity (oral: Category 4), Skin corrosion/irritation (Category 2), Serious eye damage/eye irritation (Category 2A), Specific target organ toxicity - single exposure (respiratory system; Category 3)
Label Elements: Warning, exclamation mark pictogram
Hazard Statements: Harmful if swallowed, causes skin irritation, causes serious eye irritation, may cause respiratory irritation
Precautionary Statements: Avoid breathing dust, fumes, mist, or vapor, wash skin thoroughly after handling, use only outdoors or in well-ventilated area, wear protective gloves and eye protection
Potential Health Effects: May trigger coughing, irritation to nose, throat, and eyes, prolonged exposure can harm organs involved in detoxification and breathing
Environmental Hazards: May disrupt aquatic environments
Chemical Name: Mercaptodimethylamine Oxide
CAS Number: 45837-61-2
Concentration: 98—100% by weight
Impurities/Additives: Typically less than 2% water, manufacturing byproducts may include trace amounts of amines or sulfur compounds
Inhalation: Move person outdoors, keep them calm, give fresh air, seek medical support if breathing difficulty continues
Skin Contact: Remove contaminated clothing, rinse skin thoroughly with water for at least 15 minutes, get medical attention if skin irritation or redness develops
Eye Contact: Flush eyes immediately with water for 15+ minutes, lifting upper and lower eyelids, seek medical help if eye irritation persists
Ingestion: Rinse mouth, keep person at rest, never induce vomiting, obtain medical attention immediately
Most Important Symptoms: Burning or stinging sensation, coughing, sore throat, abdominal pain, skin and eye redness/swelling
Suitable Extinguishing Media: Water spray, dry chemical powder, foam, or CO2
Unsuitable Media: Direct water jets may spread chemical
Hazards from Combustion: Produces toxic gases such as nitrogen oxides, sulfur oxides, carbon monoxide, and carbon dioxide
Firefighter Protection: Wear self-contained breathing apparatus, chemical-protective clothing, avoid inhaling fumes and vapors
Special Precautions: Cool containers exposed to heat with water spray; evacuate area if fire escalates
Personal Precautions: Restrict access, ventilate area, avoid skin and eye contact, stop leak if safe
Protective Equipment: Wear gloves, goggles, chemical-resistant clothing, respiratory protection in poorly ventilated spaces
Spill Containment: Use sand, inert absorbent, or vermiculite to control spill, prevent discharge to drains or waterways
Cleanup Methods: Gather residues with non-sparking tools and place in labeled disposal containers
Decontamination: Wash surfaces with large amounts of water and detergent
Safe Handling: Use in well-ventilated spaces, avoid inhaling vapors and mists, prevent skin and eye contact by maintaining suitable procedures and using protective gear
Equipment Requirements: Use corrosion-resistant materials for pipes and containers, keep away from sources of sparks or heat
Storage Guidelines: Store in a cool, dry place, keep containers tightly sealed, away from incompatible chemicals like strong acids and oxidizers
Packing Materials: Use containers made from steel or polyethylene compatible with organic sulfur compounds
Exposure Limits: No occupational exposure limits set for this chemical; use general organic vapor thresholds as guidance
Engineering Controls: Install local exhaust ventilation, use closed process systems when possible
Personal Protective Equipment (PPE): Wear safety goggles, chemical-resistant gloves, face shield, and protective clothing; use appropriate respiratory protection if vapor exposure risk exists
Hygiene Measures: Wash hands and exposed areas after use, do not eat or drink in work area, change contaminated clothing promptly
Appearance: Clear to yellowish liquid
Odor: Strong, unpleasant, sulfurous odor
pH: Approximately 4–7 (aqueous solution)
Melting Point/Freezing Point: Data unavailable; expected around or below 0°C
Boiling Point: Estimated above 150°C
Flash Point: Above 90°C (closed cup, estimated)
Evaporation Rate: Not specified
Flammability: Not classified as highly flammable, but may burn when strongly heated
Vapor Pressure: Low at ambient temperature
Vapor Density: Heavier than air (expected)
Relative Density: Around 1.1–1.2 g/cm³
Solubility: Miscible with water
Partition Coefficient: Not determined
Auto-Ignition Temperature: Not determined
Decomposition Temperature: Not determined
Viscosity: Not determined
Chemical Stability: Stable under normal storage and use conditions
Reactivity: May react with strong acids, oxidizers, acid chlorides, or peroxides
Hazardous Reactions: Incompatible mixing may cause violent release of heat, gas, or toxic vapor
Decomposition Products: Sulfur oxides, nitrogen oxides, and other toxic gases may form during high heat or fire
Inhibiting Conditions: Prolonged exposure to light, air, or elevated temperature can increase risk of degradation
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Acute Effects: May cause nausea, headache, burning sensation in mouth or throat, respiratory discomfort
Skin Corrosion/Irritation: Causes moderate to severe skin irritation
Serious Eye Damage/Irritation: Causes significant eye irritation and possible injury
Long-Term Exposure: Potential impact on liver or kidneys with repeated high exposure
Sensitization: Not classified, but may trigger allergic response in some individuals
Carcinogenicity/Mutagenicity: No reliable evidence of carcinogenic or mutagenic effects
Reproductive Toxicity: Not known to impact reproductive health
Numerical Measure of Toxicity: Estimated oral LD50 (rat): 200–2000 mg/kg (category 4 acute tox)
Other Health Information: Prompt removal from exposure and thorough washing reduces chance of adverse effects
Aquatic Toxicity: Harmful to fish, algae, and aquatic invertebrates; even low concentrations may disrupt aquatic habitats
Persistence and Degradability: Not rapidly biodegradable; stays in soil and water longer than many other amines
Bioaccumulative Potential: Bioaccumulation unlikely due to molecular properties
Mobility in Soil: Moves through soil and groundwater easily
Other Adverse Effects: Sulfide byproducts can further impact local flora and fauna
Environment Fate: Adequate wastewater treatment reduces risk; chemical is best kept from waterways and drains
Waste Methods: Incinerate or dispose of through licensed waste contractor adhering to regional, national, and local regulations
Packaging Disposal: Rinse and triple-wash containers, render them unusable, then send to controlled landfill or return for approved recycling
Precautions for Disposal: Never dump in drains, natural water systems, or soil; avoid evaporation into air
Regulatory References: Generate hazardous waste manifest if required; note EPA hazardous waste number where applicable
UN Number: 3267
Proper Shipping Name: Corrosive liquid, basic, organic, n.o.s. (Mercaptodimethylamine Oxide)
Transport Hazard Class: 8 (Corrosive)
Packing Group: II
Environmental Hazards: Marine pollutant—label packages for transport over water
Special Precautions for User: Secure containers against tipping, prevent leaks in transit
Transport Regulations: Subject to IMDG, IATA, ADR, and local transport law
Inventory Status: Included in TSCA (USA), EINECS/ELINCS (EU), other regional inventories
OSHA Hazard Communication: Classified as hazardous chemical under OSHA regulations
EPA Regulations: May be subject to reporting under SARA Title III Section 313 (toxic release inventory)
REACH Status: Pre-registered or registered as required under EU legislation
Other Regulations: Environment and worker protection guidelines require use of exposure controls and training
Safety Assessment: Ensure all relevant regulations for workplace labeling, use restrictions, and health protection apply in country or region of use
