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Product Name: Dimethyl Sulfone (MSM)
Chemical Name: Methylsulfonylmethane
Synonyms: MSM, DMSO2
CAS Number: 67-71-0
Recommended Uses: Nutritional supplement, chemical intermediate, veterinary uses
Supplier Information: Manufacturer or distributor name, address, phone, emergency contact
Hazard Classification: Not classified as hazardous according to GHS
Signal Word: None
Hazard Statements: No significant hazards identified
Pictograms: None required
Precautionary Statements: Avoid inhalation of dust, avoid direct eye contact, keep out of reach of children
Other Hazards: High concentrations of dust can cause respiratory and eye irritation
Chemical Identity: Dimethyl Sulfone
Common Name: MSM
Purity: ≥ 99%
Impurities: Trace levels of DMSO, water
Molecular Formula: C2H6O2S
Molecular Weight: 94.13 g/mol
Inhalation: Move person to fresh air, support breathing if uncomfortable, seek medical attention if symptoms persist
Skin Contact: Wash with mild soap and water, remove contaminated clothing, seek medical care if irritation develops
Eye Contact: Rinse cautiously with water for at least 15 minutes, remove contact lenses if present and easy, consult a medical professional if irritation continues
Ingestion: Rinse mouth thoroughly with water, never give anything orally to an unconscious person, seek advice from a healthcare provider
Suitable Extinguishing Media: Dry chemical, water spray, foam, or carbon dioxide
Unsuitable Extinguishing Media: None identified
Special Hazards: Dust may form explosive mixtures with air at high concentrations
Advice for Firefighters: Firefighters should wear approved self-contained breathing apparatus and full protective gear, prevent run-off from entering drains or water courses
Decomposition Products: Sulfur oxides, carbon oxides
Personal Precautions: Wear personal protective equipment such as gloves, safety glasses, dust mask
Environmental Precautions: Prevent further leakage or spillage if safe, avoid dispersal of dust into air, do not allow entry into sewers or waterways
Methods for Cleaning Up: Sweep up without creating dust, collect in suitable container for disposal, wash spill area with plenty of water
Handling: Minimize dust generation and accumulation, avoid contact with eyes, skin, and clothing, provide adequate ventilation, wash hands thoroughly after handling
Storage Conditions: Store in cool, dry, well-ventilated area, keep container tightly closed, keep away from incompatible materials such as strong oxidizers
Incompatible Materials: Strong acids, strong bases, strong oxidizing agents
Occupational Exposure Limits: No specific occupational exposure limits established
Engineering Controls: Use local exhaust ventilation if dust is generated, minimize dust formation
Personal Protective Equipment: Safety glasses, chemical-resistant gloves, dust-proof mask or respirator, protective clothing
Hygiene Measures: Wash hands thoroughly before eating or drinking, launder contaminated clothing before reuse
Appearance: White, odorless crystalline powder
Odor: Odorless
Melting Point: 109-111°C
Boiling Point: 238°C
Solubility in Water: 150 g/L at 20°C
Vapor Pressure: Negligible at typical temperatures
Density: 1.45 g/cm³
Partition Coefficient (log Pow): -1.3
Flash Point: Not flammable
Autoignition Temperature: Not self-igniting
pH: 6-8 (5% solution in water)
Chemical Stability: Stable under normal conditions of use and storage
Reactivity: Not reactive under normal environmental and handling conditions
Hazardous Reactions: No known hazardous reactions
Incompatible Materials: Strong oxidizing agents
Decomposition Products: Releases sulfur oxides and carbon oxides at high temperatures
Acute Toxicity: Oral LD50 (rat): > 20,000 mg/kg
Skin Corrosion/Irritation: Not classified as a skin irritant
Serious Eye Damage/Irritation: May cause mild mechanical irritation
Respiratory Sensitization: No evidence of respiratory sensitization
Carcinogenicity: Not listed by IARC, NTP, OSHA
Mutagenicity: Not mutagenic in standard tests
Reproductive Toxicity: No adverse reproductive or developmental effects observed
Other Effects: Prolonged inhalation of dust may cause mild respiratory irritation
Ecotoxicity: Not expected to be toxic to aquatic or terrestrial organisms
Persistence and Degradability: Readily biodegradable
Bioaccumulative Potential: Low, due to high solubility and low partition coefficient
Mobility in Soil: High mobility in soil and water because of high solubility
Other Adverse Effects: No data indicating significant adverse effects on the environment
Product Waste: Dispose of in accordance with local, regional, national, and international regulations, small amounts may be rinsed into drains using plenty of water
Contaminated Packaging: Offer clean containers for recycling or dispose in accordance with local regulations
Special Precautions: Avoid release of large quantities into the environment, prevent dust generation during disposal
UN Number: Not regulated
UN Proper Shipping Name: Not regulated
Transport Hazard Class: Not classified as dangerous for transport
Packing Group: Not applicable
Special Precautions: Avoid spillage, protect packaging from moisture and physical damage, ensure containers are closed and clearly labeled
US Regulations: Not subject to TSCA restrictions, not listed under SARA Title III, not regulated by CERCLA
International Inventories: Listed in EINECS, DSL, and other national inventories
Workplace Regulations: Not subject to workplace hazard communication regulations in most regions
Label Requirements: No hazard labeling required under GHS
Other Regulatory Status: Check national and local regulations for any requirements specific to use or import
