Material Safety Data Sheet – 1-Hydroxyethyl-2,3-Dimethylimidazolium Hexafluorophosphate

Identification

Product Name: 1-Hydroxyethyl-2,3-Dimethylimidazolium Hexafluorophosphate
Recommended Use: Laboratory chemicals, research, industrial applications
Manufacturer: Supplier information needed on label
CAS Number: 946682-66-0
Synonyms: [No synonyms commonly recognized for this substance]
Contact Information: Emergency contact information must appear on shipping label and SDS
Emergency Telephone: Available 24 hours

Hazard Identification

GHS Classification: Acute toxicity (oral), Skin and serious eye irritation, Specific target organ toxicity
Signal Word: Warning
Hazard Statements: Harmful if swallowed; causes skin irritation; causes serious eye irritation; may cause respiratory discomfort
Pictograms: Exclamation mark
Precautionary Statements: Do not breathe dust or vapor; wear protective gloves, eye protection; wash thoroughly after handling; if in eyes rinse cautiously with water
Other Hazards: Dust generation possible; possible release of hydrogen fluoride upon contact with acids

Composition / Information on Ingredients

Chemical Name: 1-Hydroxyethyl-2,3-Dimethylimidazolium Hexafluorophosphate
CAS Registry Number: 946682-66-0
Concentration: >98% by weight
Impurities: Trace impurities not expected to affect classification
Additives: None

First Aid Measures

Inhalation: Move individual to fresh air, seek medical attention if symptoms persist, provide artificial respiration if required
Skin Contact: Remove contaminated clothing, wash skin with soap and water, obtain medical help for irritation or burns
Eye Contact: Rinse cautiously with water for at least 15 minutes, remove contact lenses if present and easy, seek prompt medical advice
Ingestion: Rinse mouth, do not induce vomiting, give water to drink if person is conscious, obtain medical attention

Fire-Fighting Measures

Suitable Extinguishing Media: Dry chemical powder, carbon dioxide, foam
Unsuitable Media: Do not use water jets directly on substance
Hazardous Combustion Products: Hydrogen fluoride, phosphorus oxides, nitrogen oxides, carbon monoxide, carbon dioxide
Protective Equipment: Full protective fire gear and self-contained breathing apparatus
Fire/Explosion Hazards: May release toxic and corrosive gases on combustion, avoid inhalation of vapors and smoke
Special Precautions: Cool containers exposed to fire with water spray from a safe distance

Accidental Release Measures

Personal Precautions: Evacuate area, provide adequate ventilation, avoid breathing dust, use personal protective equipment including gloves, goggles, and respirators
Environmental Precautions: Prevent entry into sewers, drains, water courses, inform authorities if product enters environment
Cleanup Methods: Absorb spill with inert absorbent, transfer to waste container, wash area with detergent solution, ventilate area, and dispose of waste according to local regulations
Decontamination: Wash spill surface thoroughly to remove residues, avoid using strong acids that may release hazardous gases

Handling and Storage

Handling: Use in well-ventilated areas, avoid contact with skin, eyes, and clothing, avoid dust generation, do not eat or drink near area of use
Storage: Keep container tightly closed in a dry, cool, well-ventilated place, store away from acids, strong oxidizers, and moisture
Specific Requirements: Use corrosion-resistant containers, keep out of reach of children, maintain appropriate labeling and safety signs, regularly inspect storage conditions to detect leaks or container degradation

Exposure Controls and Personal Protection

Engineering Controls: Use fume hood or local exhaust, workplace must be monitored for airborne exposure
Exposure Limits: No occupational exposure limits established, handle as potentially hazardous
Personal Protective Equipment: Chemical-resistant gloves (nitrile preferred), goggles or face shield, lab coat or chemical apron, respiratory protection for dusts and vapors
Hygiene Measures: Wash hands before breaks, after handling, remove contaminated clothing and wash before reuse, avoid touching face during use

Physical and Chemical Properties

Appearance: White to off-white crystalline powder
Odor: Faint, not pungent
Melting Point: Approximately 145 to 155°C
Boiling Point: Decomposes before boiling
Flash Point: Data not available
Solubility: Readily soluble in water, soluble in polar organic solvents
Vapor Pressure: Negligible at room temperature
Density: 1.24 to 1.28 g/cm³
pH: 5 – 7 (10% solution in water)
Partition Coefficient: Not determined
Autoignition Temperature: Not established
Evaporation Rate: Not volatile under normal conditions

Stability and Reactivity

Chemical Stability: Stable under recommended storage conditions, avoid exposure to moisture and acids
Reactivity: Reacts with strong acids, potential to release hydrofluoric acid and other toxic gases
Incompatible Materials: Water/moisture, strong acids, strong oxidizers, alkali metals
Hazardous Decomposition Products: Hydrogen fluoride, phosphorus oxides, nitrogen oxides, carbon oxides
Conditions to Avoid: Elevated temperature, open flames, acidic conditions

Toxicological Information

Acute Toxicity: Harmful if swallowed, data on LD50 (rat, oral) limited but signifies moderate toxicity
Skin Sensitization: May cause irritation and redness on contact
Eye Damage/Irritation: Causes severe irritation and possible irreversible eye injury
Respiratory Effects: May cause coughing, shortness of breath, throat irritation on inhalation of dust
Chronic Effects: No data available on chronic toxicity; repeated exposures to decomposition products such as HF may affect respiratory and bone systems
Carcinogenicity: Not classified as carcinogenic based on available data
Mutagenicity: No mutagenic effects reported by relevant chemical agencies
Reproductive Toxicity: No specific data available

Ecological Information

Aquatic Toxicity: Product may be harmful to aquatic organisms, due to hexafluorophosphate content
Persistence and Degradability: Not readily biodegradable, remains stable in the environment
Bioaccumulation Potential: Expected to have low bioaccumulation potential
Mobility in Soil: May leach to groundwater in presence of water, careful containment required
Other Adverse Effects: No significant data on ozone, photochemical, or global warming effects

Disposal Considerations

Waste Treatment Methods: Dispose of as hazardous chemical waste under local, state, federal guidelines
Packaging Disposal: Triple rinse empty containers, puncture after cleaning, dispose of in accordance with regulations
Special Instructions: Do not discharge to surface water or municipal sewage, consult qualified waste disposal contractor
Contaminated Materials: Dispose of contaminated gloves and clothing as chemical waste

Transport Information

UN Number: 3261 (Corrosive solid, acidic, organic, n.o.s.; recommended classification check prior to shipping)
Proper Shipping Name: Chemical, n.o.s., containing imidazolium salt
Transport Hazard Class: 8 (corrosive)
Packing Group: III
Label Required: Corrosive
Environmental Hazards: Marine pollutant (yes, if packing group I or II applies; confirm before shipment)
Special Precautions for Transport: Keep in sealed, corrosion-resistant containers; prevent movement or damage in transit; emergency response guide available; personnel should use gloves and goggles when repacking or reshipping

Regulatory Information

OSHA Status: Considered hazardous based on chemical classification
SARA Title III: Subject to reporting as hazardous substance
TSCA Inventory: Listed or compliance required as new substance
Right-To-Know Listings (US): Ingredients included in state inventories of hazardous substances
European Regulations: REACH registration may be pending or required; consult with EU chemicals agency
WHMIS Classification: D2B – Toxic material causing other toxic effects (Canada)
Other Information: Observe all local, national, and international regulations concerning use, disposal, and handling