Material Safety Data Sheet: 1,3-Dimethylimidazolium Dihydrogen Phosphate

Identification

Product Name: 1,3-Dimethylimidazolium Dihydrogen Phosphate
Chemical Formula: C5H11N2O4P
CAS Number: 63504-70-1
Synonyms: Ionic liquid, [Dmim][H2PO4]
Recommended Use: Laboratory chemicals, industrial application including catalysis and electrolyte research
Manufacturer: [Company Name/Address]
Contact Information: Emergency phone number and customer support contact

Hazard Identification

Classification: Acute toxicity – Category 4 (oral), Skin irritation – Category 2, Eye irritation – Category 2
GHS Label Elements: Exclamation mark, Warning
Hazard Statements: Harmful if swallowed, causes skin irritation, causes serious eye irritation
Precautionary Statements: Avoid breathing dust, wash hands thoroughly after handling, do not eat, drink, or smoke when using this product, wear protective gloves and eye protection, call a poison center or doctor if feeling unwell
Potential Health Effects: Can cause stomach upsets and skin reactions, may trap moisture in skin folds, can irritate eyes quickly

Composition / Information on Ingredients

Chemical Name: 1,3-Dimethylimidazolium Dihydrogen Phosphate
CAS Number: 63504-70-1
Concentration: 100% (pure substance)
Impurities: None reported when handled under standard laboratory conditions
Other Components: Not applicable

First Aid Measures

General Advice: Get medical attention immediately if symptoms occur or persist
If Inhaled: Move person to fresh air, seek medical attention if symptoms such as coughing or shortness of breath continue
In Case of Skin Contact: Remove contaminated clothing, rinse skin with plenty of water for at least 15 minutes, use mild soap, get medical help if irritation persists
If In Eyes: Rinse cautiously with water for several minutes, remove contact lenses, keep rinsing, seek medical advice quickly
If Swallowed: Rinse mouth, drink plenty of water if conscious, never give anything by mouth to an unconscious person, call a poison center or doctor at once

Fire-Fighting Measures

Suitable Extinguishing Media: Use water spray, alcohol-resistant foam, dry chemical, or carbon dioxide
Unsuitable Extinguishing Media: High-pressure water streams may scatter chemical
Specific Hazards: May produce toxic fumes such as nitrogen oxides, phosphorus oxides, and carbon oxides upon combustion
Firefighter Protection: Firefighters must wear full protective clothing and self-contained breathing apparatus, avoid inhalation of combustion by-products
Special Procedures: Prevent fire-fighting water from entering drains or watercourses, cool sealed containers nearby with water spray

Accidental Release Measures

Personal Precautions: Wear protective equipment including gloves, eye protection, and lab coat, ventilate area, avoid contact with skin and eyes
Environmental Precautions: Prevent spillage from reaching drains or natural water sources, notify authorities if contamination occurs
Containment and Cleanup: Collect spillage with inert absorbent material, place in chemical waste container for proper disposal, wash contaminated area with water, ventilate area

Handling and Storage

Handling: Handle in a well-ventilated area, avoid ingestion and inhalation, use proper personal protective equipment, practice good hygiene such as handwashing
Storage Conditions: Store in tightly closed containers, keep at room temperature in dry, ventilated place, protect from moisture and incompatible materials
Incompatibility: Avoid strong oxidizers, strong acids, and bases to prevent hazardous reactions
General Hygiene Practices: Remove contaminated clothing and wash before reuse, keep away from food and beverages

Exposure Controls and Personal Protection

Engineering Controls: Use local exhaust ventilation, safety shower, and eyewash stations in handling areas
Exposure Limits: No occupational exposure limits established for this compound
Personal Protective Equipment: Chemical-resistant gloves (nitrile or neoprene), splash-proof safety goggles, lab coat or apron
Respiratory Protection: In case of inadequate ventilation, use NIOSH-approved respiratory protection
Hygiene Measures: Wash hands, face, and exposed skin before eating, drinking, or leaving work

Physical and Chemical Properties

Appearance: White to yellowish solid, may appear as powder or crystalline lumps
Odor: Slight, faint amine-like scent
pH: Slightly acidic in aqueous solution
Melting Point: 100–200°C (decomposes)
Boiling Point: Not volatile, decomposes before boiling
Solubility: Freely soluble in water, methanol, and ethanol
Flash Point: Not flammable under standard conditions
Explosive Properties: Not classified as explosive
Density: Roughly 1.5 g/cm3 at 20°C
Vapor Pressure: Negligible at room temperature

Stability and Reactivity

Chemical Stability: Stable under normal temperature and pressure for laboratory and industrial applications
Reactivity: Can react with strong oxidizers and acids, leading to possible exothermic events
Hazardous Decomposition Products: Upon decomposition, can emit phosphorus oxides, nitrogen oxides, carbon monoxide, carbon dioxide
Conditions to Avoid: Excessive heat, direct sunlight, contact with incompatible materials
Polymerization: Not known to polymerize

Toxicological Information

Acute Toxicity: Oral LD50 (rat) estimated between 300–2000 mg/kg
Skin Contact: Causes redness and mild irritation, prolonged exposure may lead to dermatitis
Eye Contact: Can provoke irritation, tearing, redness, blurred vision
Repeated Exposure: Can cause drying and cracking of skin, sensitization not commonly reported
Carcinogenicity: No data to suggest cancer risk
Mutagenicity: No genetic toxicity reported in available studies
Reproductive Toxicity: Not established, effects unknown

Ecological Information

Ecotoxicity: Limited data; not expected to be highly toxic to aquatic life in small quantities, but large spills could cause localized damage
Persistence and Degradability: Biodegradation in environment not well documented, may persist if released in large quantities
Bioaccumulative Potential: Not likely to bioaccumulate significantly
Mobility in Soil: Expected to be highly mobile, especially in moist environments
Other Adverse Effects: Should not be discharged uncontrolled in water bodies or soil

Disposal Considerations

Waste Treatment Methods: Dispose of as hazardous chemical waste in line with local, regional, and national regulations
Contaminated Packaging: Rinse thoroughly before disposal or send to qualified incinerator
Disposal Restrictions: Do not allow product or contaminated packaging to reach sewage systems, surface water, or soil
Special Precautions: Seek advice from certified disposal contractor for large quantities

Transport Information

UN Number: Not regulated as dangerous goods under most international transport regulations
Proper Shipping Name: 1,3-Dimethylimidazolium Dihydrogen Phosphate
Transport Hazard Class: Not classified as hazardous for transport
Packing Group: Not specified
Environmental Hazards: Not a marine pollutant
Special Precautions for Transport: Protect from moisture, store in tightly sealed containers, keep away from strong oxidizers

Regulatory Information

Safety, Health, and Environmental Regulations: Not listed under major chemical inventories as restricted, always consult regional chemical regulations for updates
TSCA (US): Not specifically listed, check component compliance
REACH (EU): Not registered as a high-concern chemical, use under controlled conditions
OSHA (US): General industry safety requirements apply
WHMIS (Canada): Not classified as hazardous under WHMIS criteria
Additional Regulations: Environmental Protection Acts in major jurisdictions require good stewardship to prevent environmental release