Product Name: 1-Carboxymethyl-3-Methylimidazolium Hydrogensulfate
Chemical Formula: C7H11N2O4S
CAS Number: 934487-64-2
Synonyms: 1-(Carboxymethyl)-3-methylimidazolium hydrogen sulfate
Manufacturer: Research-grade chemical suppliers (names and contact information available from procurement records)
Recommended Use: Solvent, catalyst, ionic liquid for research and synthesis
Restrictions: For laboratory or industrial use, not for drug, food, or cosmetic purposes
GHS Classification: Corrosive to metals, eye irritation, skin irritation
Signal Word: Warning
Hazard Statements: Causes skin and serious eye irritation, may react with metals and release harmful gases, can be harmful if swallowed, may cause respiratory irritation
Pictograms: Corrosive, exclamation mark
Precautionary Statements: Avoid breathing dust, use in well-ventilated place, wear protective gloves and eye protection, wash exposed skin thoroughly after handling, keep container tightly closed
Potential Health Effects: Direct contact leads to burns or irritation on skin and mucous membranes; ingestion may result in gastrointestinal discomfort or pain; inhalation of dust or vapors may cause sore throat or coughing; chronic exposure can provoke dermatitis or exacerbate respiratory sensitivities
Chemical Name: 1-Carboxymethyl-3-Methylimidazolium Hydrogensulfate
Purity: 95% or higher
Impurities: Water (< 3%), trace imidazole derivatives
Hazardous Components: Hydrogensulfate anion is corrosive and may generate sulfur oxides under certain conditions; all components contribute to observed toxicity
Skin Contact: Remove contaminated clothing and rinse affected area with plenty of water for at least 15 minutes, use soap if available, seek medical attention for irritation or burns
Eye Contact: Rinse eyes cautiously with water for several minutes, remove contact lenses if present, continue rinsing, consult an ophthalmologist
Inhalation: Move to fresh air, keep person at rest, seek medical advice if symptoms such as shortness of breath or coughing develop
Ingestion: Rinse mouth with water, never induce vomiting, seek immediate medical care, give nothing by mouth if patient is unconscious
Recommendations for Physicians: Symptomatic and supportive treatment, monitor for airway and skin complications
Suitable Extinguishing Media: Water spray, foam, dry powder, or carbon dioxide
Unsuitable Media: Do not use direct high-pressure water jets; chemical may react violently
Hazards During Fire: May decompose releasing toxic fumes including sulfur oxides, nitrogen oxides, carbon monoxide
Protective Equipment for Firefighters: Chemical protective clothing, self-contained breathing apparatus
Advice: Cool closed containers exposed to fire with water spray, prevent runoff from entering water systems
Personal Precautions: Wear gloves, splash goggles, laboratory coat, avoid breathing dust, ensure adequate ventilation
Environmental Precautions: Prevent release to soil, waterways, or drains, notify environmental authorities if a significant spill occurs
Clean-up Methods: Absorb with inert material (dry sand, earth, vermiculite), collect in tightly closed containers for disposal, clean spill area thoroughly to avoid residue
Decontamination: Wash affected areas with soap and water; ventilate area after cleanup
Handling: Handle in closed systems, use only in well-ventilated locations, avoid direct contact with eyes, skin, or clothing, do not breathe dust or vapors
Storage: Store in cool, dry places in original airtight container, isolate from incompatible materials such as strong bases, oxidizers, metals, protect from moisture and direct sunlight, ensure container labeling remains visible
Special Precautions: Use corrosion-resistant containers, keep away from sources of ignition, store away from food and beverages
Engineering Controls: Work in chemical fume hood, mechanical ventilation is recommended, install eyewash stations and emergency showers
Personal Protection: Wear nitrile gloves, full splash goggles, lab coat, if risk of inhalation exists use particulate respirator (P2/P3), closed shoes
Hygiene Measures: Wash hands thoroughly after handling, remove and wash contaminated clothing before reuse, do not eat or drink in the laboratory
Occupational Exposure Limits: No established limits, control exposure to lowest possible level
Appearance: Off-white to pale yellow solid or viscous liquid
Odor: Faint, sulfurous
pH: Acidic (< 3 in aqueous solution)
Melting Point: 70–120°C (varies with purity and hydration)
Boiling Point: Decomposes before boiling
Solubility: Highly soluble in water and polar organic solvents
Density: 1.31–1.36 g/cm³
Vapor Pressure: Negligible at room temperature
Flash Point: >150°C (estimated, decomposition possible before combustion)
Explosive Properties: Not expected, but heating releases gases
Auto-ignition Temperature: Data not available
Viscosity: Medium to high, varies with temperature
Chemical Stability: Stable under recommended conditions, degrades by hydrolysis under strong base
Incompatible Materials: Metals, strong oxidants, reducing agents, bases
Conditions to Avoid: Excessive heat, open flames, moisture, freezing
Hazardous Decomposition Products: Sulfur dioxide, carbon oxides, nitrogen oxides, imidazole derivatives
Reactivity: Attacks some metals, can produce flammable or toxic gases on contact with other chemicals
Acute Toxicity: Oral LD50 (rat) > 2000 mg/kg (estimated, limited test data)
Skin Corrosion/Irritation: Causes mild to moderate irritation, prolonged exposure may cause burns
Serious Eye Damage/Irritation: Causes severe irritation, corneal injury possible
Respiratory Sensitization: May cause slight irritation to mucous membranes
Chronic Effects: Long-term exposure not well studied, potential for dermatitis and respiratory tract irritation
Carcinogenicity: Not classified as carcinogen by IARC, ACGIH, OSHA
Mutagenicity: No mutagenic data found
Aquatic Toxicity: No comprehensive data, ionic liquids may affect aquatic organisms if released in large quantities
Persistence and Degradability: Not readily biodegradable, may persist in aquatic environment
Bioaccumulation: No data, potential for low bioaccumulation due to ionic nature
Mobility in Soil: High mobility due to water solubility, potential to migrate to groundwater
Other Adverse Effects: Avoid release to the environment, chemical may disrupt aquatic or soil ecosystems
Disposal Methods: Collect in sealed, labeled containers, deliver to approved hazardous waste treatment facility
Waste Code: Not classified under RCRA, check with local regulatory guidance
Contaminated Packaging: Triple rinse, puncture, and send to waste management or recycling contractor
Precautions: Prevent environmental contamination, follow local regulations strictly, do not flush to drain
UN Number: Not classified as dangerous under UN Recommendations
Proper Shipping Name: Chemical, n.o.s. (not otherwise specified)
Transport Hazard Class: Non-regulated for most forms of national and international transport
Packing Group: Not assigned
Environmental Hazards: Not a marine pollutant
Special Precautions: Prevent package damage, keep upright, secure containers
GHS Compliance: Meets requirements for labeling and documentation
TSCA Status: Not listed on US Toxic Substances Control Act Inventory, use restricted to research
EU Regulation: Not listed on EINECS/ELINCS, subject to REACH registration for import >1 metric ton per year
Other International Standards: Local workplace safety legislation may apply, adhere to chemical hygiene plans, provide workforce training per regional requirements
Label Elements: Corrosive pictogram, warning signal word, hazard and precaution statements
Other Data: Updated SDS recommended every three years or as new information emerges, consult institutional EHS office for latest protocols
