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Product Name: Dimethyl Sulfoxide-D6
Synonyms: DMSO-d6; Deuterated DMSO
Chemical Formula: C2D6OS
Molecular Weight: 84.17 g/mol
CAS Number: 2206-27-1
Recommended Use: NMR solvent, laboratory chemical
Manufacturer Information: Supplier name, address, and emergency phone number — always found straight on the label of chemical bottles.
Emergency Phone: National emergency poison control line or on-call chemist hotline provided by supplier.
GHS Classification: Skin Irritation Category 2, Eye Irritation Category 2A
Signal Word: Warning
Hazard Statements: Causes skin irritation. Causes serious eye irritation. May be harmful if swallowed or absorbed through skin. Can enhance absorption of other chemicals through the skin.
Pictograms: Exclamation mark
Precautionary Statements: Wear protective gloves/protective clothing/eye protection/face protection. Wash hands thoroughly after handling. If in eyes: rinse cautiously with water for several minutes; remove contact lenses if present and easy to do. If skin irritation occurs, seek medical advice.
Chemical Name: Dimethyl Sulfoxide-D6
Concentration: >99% D6-labeled
Impurities: Deuterium content >99.9%; other isotopic impurities trace levels only
CAS Number: 2206-27-1
Inhalation: Move affected person to fresh air. Rest and keep comfortable. Seek medical attention if symptoms like coughing or dizziness persist.
Skin Contact: Remove contaminated clothing, wash skin thoroughly with plenty of water and mild soap. Medical help if irritation or absorption symptoms show up or persist.
Eye Contact: Rinse eyes gently with water for at least 15 minutes, holding eyelids open. Remove contact lenses after the first couple of minutes and continue rinsing. Call medical services if irritation continues.
Ingestion: Rinse mouth with water, drink a glass of water if possible. Immediate medical help if a large quantity swallowed or if symptoms develop. Do not induce vomiting unless directed by medical personnel.
Main Symptoms/Effects: Burning sensation, redness, possible headache or drowsiness with significant exposure.
Suitable Extinguishing Media: Carbon dioxide, foam, dry chemical powder, or water spray. Use agents appropriate for surrounding fire.
Specific Hazards: Combustion can produce sulfur oxides, formaldehyde, carbon monoxide, carbon dioxide — all of these can irritate and cause harm in a closed or poorly ventilated space.
Protective Equipment: Firefighters need self-contained breathing apparatus (SCBA) and full protective suit. Chemical-resistant gloves and boots.
Special Precautions: Avoid breathing vapors. Keep upwind. Cool exposed containers with water spray.
Personal Protection: Gloves, safety goggles, lab coat, and if the spill is large, use a chemical fume hood or respirator for vapors. Remove sources of ignition.
Spill Containment: Keep unnecessary personnel away. Ventilate area well. Absorb spilled liquid with inert material such as sand, earth, or vermiculite. Avoid direct skin contact.
Cleanup Methods: Scoop or sweep up spilled material and place in suitable waste disposal container. Wash area with water after material has been cleaned up.
Environmental Precautions: Try to prevent large quantities from entering drains or watercourses.
Handling: Always wear gloves and goggles, keep containers closed tightly. Avoid contact with skin, eyes, and clothing. Use only in well-ventilated areas.
Hygiene Practices: Wash hands after use; do not eat, drink, or smoke in the laboratory. Regularly inspect containers for leaks.
Storage Conditions: Store in tightly sealed containers away from direct sunlight in a cool, dry, well-ventilated area. Keep away from incompatible substances such as strong oxidizers or acids.
Incompatibilities: Store away from halogen compounds, peroxides, and strong bases. DMSO can react vigorously with some chlorinating agents.
Engineering Controls: Work in a chemical fume hood. Ensure eye-wash and safety shower are close by.
Respiratory Protection: Wear a properly fitted organic vapor respirator if ventilation does not keep exposure below recommended limits.
Eye Protection: Chemical safety goggles are required.
Skin Protection: Wear impermeable gloves (nitrile or neoprene recommended), lab coat or apron, closed-toe shoes.
Exposure Limits: No specific OSHA or ACGIH exposure limits for DMSO-d6, but handle as a chemical with limited toxicity data and potent dermal absorption.
Appearance: Clear, colorless liquid
Odor: Practically odorless or slight sulfur odor
pH: Neutral (in water)
Melting Point: 18.7 °C (65.7 °F)
Boiling Point: 189 °C (372 °F)
Flash Point: 87 °C (188 °F) closed cup
Evaporation Rate: Slow (compared to diethyl ether or acetone)
Vapor Pressure: 0.6 mm Hg at 20 °C
Density: 1.190 g/cm³ at 25 °C
Solubility: Miscible with water and most organic solvents
Viscosity: 2.0 mPa·s at 25 °C
Partition Coefficient (log Kow): -1.35 (low potential for bioaccumulation)
Decomposition Temperature: >200 °C (decomposes to release toxic gases)
Chemical Stability: Stable at standard laboratory conditions if stored sealed.
Reactivity: Inert under normal conditions but reacts with strong oxidizers, acyl halides, or chlorinating agents to produce toxic gases. Avoid contact with strong reducing agents.
Hazardous Decomposition Products: Emits toxic fumes such as sulfur oxides and formaldehyde at high temperatures.
Polymerization: Will not occur under normal handling.
Acute Toxicity: Low by oral or dermal route but can increase permeability of skin to other chemicals — a risk in mixed chemical exposures.
Chronic Effects: Can cause dryness or cracking of skin; long-term exposure studies limited for deuterated compound but DMSO effects apply.
Carcinogenicity: Not considered carcinogenic by IARC, NTP, or OSHA.
Mutagenicity: No strong evidence for genotoxicity.
Reproductive Toxicity: No reliable reports of developmental toxicity.
Other Effects: May cause gastrointestinal discomfort if swallowed; can enhance the absorption of other toxins through the skin. Risk for workers with sensitive skin.
Ecotoxicity: Low toxicity in aquatic environments; no reports of harm at trace laboratory levels but bulk release should be avoided.
Persistence and Degradability: Biodegradable under standard environmental conditions.
Bioaccumulation: Low potential due to fast breakdown and low log Kow.
Mobility in Soil: High, given miscibility with water.
Other Information: Avoid major spills into sewers, waterways, or soil; not expected to persist or accumulate in the food chain.
Waste Disposal Methods: All liquid remnants or contaminated materials go in clearly labeled hazardous waste containers for solvent disposal, in accordance with local, regional, and national regulations.
Container Disposal: Empty containers may still carry residue and vapors — triple rinse, then puncture prior to sending to chemical waste.
Precautions: Do not pour down drain or dispose of in regular trash. Consult state or local environmental authorities regarding proper disposal.
UN Number: Not classified as dangerous for transport in most countries
Transport Hazard Class: Not regulated
Packing Group: Not applicable
Marine Pollutant: No
Special Transport Notes: Keep tightly sealed during transport, cushioned from excessive movement and heat. Follow transport regulations of the receiving country if shipping internationally.
TSCA Status: Listed
REACH Status: Exempt from registration under REACH for research and development uses
US SARA Title III: Not listed as a hazardous substance for emergency planning reporting
California Proposition 65: Not listed
Other Local Requirements: Laboratory use may be subject to chemical hygiene plans or hazard communication standards. Always check the latest national and local chemical safety guidance.
