Product Name: Ethanesulfonic Acid
Chemical Formula: C2H6O3S
CAS Number: 107-15-3
Synonyms: Ethylsulfonic acid
Manufacturer/Supplier: Refer to local supplier or chemical manufacturer
Recommended Uses: Laboratory reagent, industrial processing agent, chemical synthesis
Emergency Contact: Refer to manufacturer details for emergency numbers and immediate response teams
Restrictions: Not for human or veterinary medicinal use without regulatory approval
Classification: Corrosive to metals, serious eye damage, skin corrosion
GHS Label Elements: Danger, corrosion pictogram, exclamation mark
Hazard Statements: Causes severe skin burns and eye damage, may be corrosive to respiratory tract, reacts strongly with bases
Precautionary Statements: Wash after handling, avoid inhalation, wear protective clothing, avoid contact with skin and eyes, do not eat, drink, or smoke when using
Potential Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Chemical Name: Ethanesulfonic Acid
Concentration: Greater than 98%
CAS Number: 107-15-3
Impurities: Commercial grades may contain small quantities of residual solvents or by-products below reporting thresholds
Other Ingredients: No significant non-classified components
Eye Contact: Flush thoroughly with plenty of water for at least 15 minutes, lift eyelids occasionally, seek immediate medical attention
Skin Contact: Remove contaminated clothing, wash affected area with soap and water for at least 15 minutes, seek medical attention if irritation persists
Inhalation: Move to fresh air, ensure adequate breathing, seek medical attention if symptoms develop or persist
Ingestion: Do not induce vomiting, rinse mouth with water, give plenty of water if conscious, seek immediate medical help
Most Important Symptoms: Redness, irritation, burns to skin, severe irritation or burns to eyes, mucous membrane irritation
Notes for Physician: Treat symptomatically and according to clinical judgment, consider possible effects of corrosive liquid
Suitable Extinguishing Media: Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide for surrounding fire
Unsuitable Media: Avoid direct water jets
Hazards from Combustion: Sulfur oxides, carbon oxides, toxic fumes
Protective Equipment: Wear full protective gear and self-contained breathing apparatus
Special Procedures: Prevent run-off from contaminating water sources, use water spray to cool containers exposed to fire
Unusual Fire and Explosion Hazards: In contact with metals releases flammable hydrogen gas
Personal Precautions: Evacuate unprotected personnel, ventilate area, avoid breathing vapors, avoid contact with skin and eyes, use appropriate PPE
Environmental Precautions: Prevent further leakage or spillage if safe, keep out of drains, sewers, waterways, inform authorities if significant pollution occurs
Clean-up methods: Contain and collect spillage with inert absorbent material like sand or sodium bicarbonate, place in chemical waste container, avoid generating aerosols
Decontamination: Wash spill area with plenty of water after material pick-up
Disposal: Dispose in accordance with regulatory requirements
Handling: Avoid breathing vapors or fumes, work in well-ventilated spaces, prevent ingestion and contact with skin or eyes, use suitable protective equipment, avoid incompatible materials
Hygiene Measures: Change contaminated clothing, wash thoroughly after handling, do not eat, drink, or smoke while using
Storage Conditions: Store tightly closed in a cool, dry, well-ventilated area, keep away from strong bases and oxidizing agents, segregate from incompatible materials
Special Requirements: Use corrosion-resistant containers and secondary containment as needed
Engineering Controls: Use local and general exhaust ventilation, enclose processes where possible, eye wash stations and safety showers should be accessible
Occupational Exposure Limits: No established limits for ethanesulfonic acid, use general dust/fume limits as a guide
Personal Protective Equipment: Chemical resistant gloves (nitrile or neoprene), tightly fitting chemical splash goggles, protective clothing including laboratory coat or apron, suitable respiratory protection when ventilation is inadequate or working with large quantities
Environmental Exposure Controls: Prevent release to environment, collect waste and effluent for proper disposal
Appearance: Clear to yellowish liquid
Odor: Slightly pungent, sulfur-like
Odor Threshold: Not determined
pH: Less than 2 (strongly acidic, 1% solution)
Melting Point/Freezing Point: Around 2 to 4 °C
Boiling Point/Range: 151 °C at 760 mmHg
Flash Point: Not determined; non-combustible
Evaporation Rate: Not determined
Flammability: Not flammable
Vapor Pressure: 0.2 mmHg at 25 °C
Vapor Density: Greater than 1 (air = 1)
Density/Relative Density: About 1.37 g/cm³ at 20°C
Solubility: Miscible with water
Partition Coefficient: Not determined
Auto-ignition Temperature: Not determined
Decomposition Temperature: Not determined
Viscosity: Not determined
Chemical Stability: Stable under recommended storage conditions
Reactivity: Reacts violently with strong bases, forms salt and water, reacts with metals releasing hydrogen gas
Conditions to Avoid: Excess heat, open flames, incompatibles
Incompatible Materials: Strong bases, oxidizing agents, metals, reducing agents
Hazardous Decomposition Products: Sulfur oxides, carbon oxides
Hazardous Reactions: Potential for violent reactions with incompatible substances
Acute Toxicity: Limited toxicity data for ethanesulfonic acid, irritation and burns reported in animal studies, estimated LD50 (oral, rat) above 1000 mg/kg
Skin Corrosion/Irritation: Strongly corrosive, can cause burns after brief contact
Serious Eye Damage/Irritation: Causes severe irritation and possible permanent eye injury
Respiratory Sensitization: Corrosive to mucous membranes, may cause coughing or difficulty breathing
Skin Sensitization: No data indicating sensitization
Chronic Toxicity: Long-term exposure not well characterized; repeated exposure to acids can lead to chronic dermatitis, respiratory tract irritation
Carcinogenicity: Not listed by IARC, NTP, or OSHA
Mutagenicity: No data suggesting mutagenic risk
Reproductive Effects: No data indicating adverse reproductive effects
Ecotoxicity: Strong acid, potentially harmful to aquatic life, low quantities can alter local pH
Persistence and Degradability: Readily soluble in water, expected to dissociate and dilute; persistence in environment unlikely
Bioaccumulative Potential: Not expected to bioaccumulate in organisms
Mobility in Soil: High mobility, penetrates soil easily
Other Adverse Effects: Avoid release to natural waters; acidification can disrupt ecosystems
Waste Disposal Method: Dispose as hazardous waste following local, state, and national regulations, neutralize carefully before disposal
Container Disposal: Rinse empty container well, dispose through licensed chemical waste contractor
Precautions: Wear appropriate PPE during disposal, minimize environmental exposure, do not mix with incompatible or reactive wastes
UN Number: 3265
UN Proper Shipping Name: Corrosive liquid, acidic, organic, n.o.s. (Ethanesulfonic acid)
Transport Hazard Class: 8 (corrosive substances)
Packing Group: II
Marine Pollutant: Not classified as a marine pollutant
Special Transport Precautions: Keep upright and secure, avoid damage to container, emergency response documents must accompany shipment
Regulatory Labels: Corrosive substance, wear protective gear during handling and transport
Safety, Health, Environmental Regulations: Complies with US OSHA Hazard Communication Standard, EU REACH requirements, included in Canada WHMIS inventory
TSCA Status: Listed on US TSCA inventory
EU EINECS/ELINCS: Listed
SARA Title III: Not subject to reporting under Sections 302, 304, 311, or 313
California Proposition 65: Not listed
Other International Regulations: Complies with chemical inventories in Japan, Korea, Australia, New Zealand
Other Specific Provisions: Observe relevant regional, national, and local regulations regarding chemical safety
