Product Name: N-Ethylimidazolium Dihydrogen Phosphate
Synonyms: NEIm H2PO4
CAS Number: Not universally assigned, check supplier data
Recommended Use: Laboratory chemical, ionic liquid applications
Supplier Information: Manufacturer or distributor details needed on label
Emergency Phone: Refer to emergency contact or poison control center
Classification: Not classified as hazardous by GHS standards under most interpretations; assessment based on composition
Hazard Symbols: Not applicable for most jurisdictions
Signal Word: None
Hazard Statements: May cause mild skin and eye irritation; avoid ingestion and inhalation of dust or vapors
Precautionary Statements: Avoid contact with eyes, skin, and clothing; use proper ventilation
Other Hazards: No long-term environmental hazard data noted; as with all chemicals, treat with care
Chemical Name: N-Ethylimidazolium Dihydrogen Phosphate
Common Formula: C5H11N2•H2PO4
Purity: Generally supplied at >98% purity, possible trace water or other ionic impurities
Impurities: Small amounts of related imidazolium compounds or inorganic phosphate byproducts possible
Mixtures: Not applicable for pure substance
Inhalation: Move to fresh air, keep at rest; if breathing affects health, seek medical attention
Skin Contact: Remove contaminated clothing, wash with soap and water; persistent irritation warrants medical help
Eye Contact: Rinse immediately with plenty of water for at least 15 minutes, lift eyelids; get medical advice for continuing discomfort
Ingestion: Rinse mouth with water; if large quantities swallowed, seek medical advice, do not induce vomiting
Most Important Symptoms: Local irritation to eyes, skin, or respiratory system, no documented systemic effects from brief exposure
Note to Physician: Treat symptomatically based on clinical judgment
Suitable Extinguishing Media: Water spray, foam, dry chemical, or carbon dioxide; ionic liquids generally resist combustion but check accessories
Unsuitable Extinguishing Media: High-pressure water jets may spread contamination
Special Hazards: Decomposition at high temperature may release nitrogen oxides, phosphorus oxides, and imidazole vapors
Special Protective Equipment for Firefighters: Use standard turnout gear including self-contained breathing apparatus
Fire-Fighting Instructions: Cool containers exposed to flames, avoid inhaling fumes produced by decomposition
Personal Precautions: Wear gloves, goggles, and protective clothing; limit exposure to accidental skin or eye contact
Environmental Precautions: Prevent entry to waterways, drains, or soil; ionic nature may disrupt aquatic environments
Methods for Cleanup: Absorb with inert material like sand or earth, collect in sealable containers
Cleaning Methods: Ventilate area, wash spill site after material pickup to avoid slips or residue
Handling: Avoid inhalation, ingestion, and direct skin contact; utilize chemical fume hood or adequate ventilation
Storage: Store in a tightly closed container in a well-ventilated, dry, cool area away from heat and incompatible materials
Incompatibilities: Strong oxidizing agents, strong acids, or strong bases may degrade product or pose a hazard
Other Notes: Avoid repeated freeze-thaw cycles that may alter product consistency or integrity
Engineering Controls: Use fume hood, exhaust ventilation, or other engineering controls to minimize airborne exposure
Personal Protective Equipment – Eyes/Face: Safety goggles or face shield that meets EN166 or equivalent
Personal Protective Equipment – Skin/Body: Chemical-resistant gloves (nitrile, neoprene), laboratory coat, long pants
Personal Protective Equipment – Respiratory: If ventilation is inadequate, use NIOSH/MSHA or equivalent approved respirator
Hygiene Measures: Wash hands thoroughly after handling, do not eat, drink, or smoke while handling
Exposure Limits: No established occupational exposure limits for this ionic liquid
Appearance: Pale to colorless viscous liquid or hygroscopic solid, characteristic odor mild
Odor Threshold: Not determined
pH: Acidic in aqueous solution, often pH 1–3 depending on dilution
Melting/Freezing Point: Typically below room temperature as a liquid; exact value dependent on purity
Boiling Point: Decomposes before boiling under atmospheric pressure
Flash Point: Expected to be high, lack of flammable vapor at standard conditions
Evaporation Rate: Negligible, low volatility
Flammability: Does not readily ignite
Vapor Pressure: Extremely low at ambient conditions
Relative Density: Expected 1.2–1.5 g/cm³
Solubility in Water: Fully miscible
Partition Coefficient: Not applicable due to ionic nature
Auto-ignition Temperature: Not established
Decomposition Temperature: May decompose with heat into imidazole derivatives and phosphate fumes
Chemical Stability: Stable at room temperature under recommended storage and handling
Reactivity: Inert under normal laboratory use, avoid strong oxidizers and acids/bases
Possible Hazardous Reactions: Polymerization or hazardous reactions do not occur in normal use
Conditions to Avoid: Excessive moisture, high temperatures, and incompatible chemicals
Hazardous Decomposition Products: Imidazole, nitrogen oxides, and phosphorus oxides may form under thermal stress
Likely Routes of Exposure: Inhalation, ingestion, skin, and eye contact
Acute Toxicity: No specific LD50 available; imidazolium salts generally have moderate toxicity; handle with caution
Skin Irritation: May cause mild irritation with prolonged contact
Eye Irritation: May irritate eyes; flush thoroughly if contacted
Respiratory Sensitization: Prolonged inhalation of dust or mist could irritate mucous membranes
Chronic Effects: No long-term studies in humans; treat as a potentially hazardous substance
Carcinogenicity: Not listed by IARC, NTP, OSHA as a carcinogen
Mutagenicity/Teratogenicity: No data available; use appropriate precautions
Aquatic Toxicity: Data is limited, similar salts impact aquatic organisms at high concentrations
Persistence and Degradability: Ionic liquids may resist rapid biodegradation; avoid unintentional release
Bioaccumulative Potential: Expected to be low based on ionic nature
Mobility in Soil: Fully water soluble, mobile in aquatic environments
Other Adverse Effects: Prevent large-scale entry to waterways as a caution due to unknown chronic effects
Waste Treatment Methods: Dispose as hazardous chemical waste; consult local authorities for regulations
Product Disposal: Incineration in approved facility or landfill if permitted; effective treatment requires professional waste handlers
Contaminated Packaging: Decontaminate and reuse if possible or handle as hazardous waste
Other Notes: Do not discharge to drains or environment
UN Number: Not classified under common dangerous goods regulations
Proper Shipping Name: Chemical, not otherwise specified
Transport Hazard Class: Not regulated
Packing Group: Not assigned
Environmental Hazards: Not considered marine pollutant under IMDG
Special Precautions: Ensure containers are tight, upright, and shielded from moisture and heat
Inventory Listing: Not listed individually on DSL, TSCA, or EINECS in many regions; consult supplier
Regulatory Status: Not subject to special regulations under REACH, CERCLA, or SARA for ionic liquids in most markets
Label Requirements: Standard labelling for laboratory chemical; include substance, hazard, and supplier information
Other Requirements: Employee training and risk assessment part of chemical hygiene and safety compliance; SDS access must be provided in workplace
