Product Name: Lithium Difluorophosphate
Chemical Formula: LiPO2F2
SYNONYMS: LiDFP, Lithium difluoro-orthophosphate
Recommended Use: Electrolyte additive in lithium-ion battery manufacture
Supplier Details: Manufacturer contacts, including phone and emergency contact number, should be readily available on the label and documentation. Make sure to consult manufacturer information for any updates or region-specific regulations.
CAS Number: 135246-28-7
Emergency Telephone Number: Provided by supplier, vital for quick access during emergencies.
GHS Classification: Acute toxicity (oral, inhalation), skin irritation, severe eye damage, irritant to respiratory system
Signal Word: Danger
Hazard Statements: Causes severe eye damage, skin irritation, and respiratory tract irritation. Harmful if swallowed or inhaled. Prolonged or repeated exposure may aggravate pre-existing respiratory and skin conditions.
Pictograms: Corrosive, exclamation mark
Precautionary Statements: Avoid breathing dust, wear protective gloves/protective clothing/eye protection/face protection, wash hands thoroughly after handling. If in eyes: Rinse cautiously with water and seek immediate medical attention. If inhaled: Remove person to fresh air and keep comfortable for breathing.
Chemical Identity: Lithium Difluorophosphate
Common Name: LiDFP
Concentration: 98-100%
Impurities: Possible traces of lithium salts, residual solvents from synthesis
Additives or Stabilizers: Not included in pure form, some electrolyte formulations blend with other additives.
Inhalation: Move affected person to fresh air, keep at rest in a position comfortable for breathing, consult medical assistance immediately. Oxygen or artificial respiration may be needed in severe cases.
Skin Contact: Remove any contaminated clothing and wash skin thoroughly with soap and water for at least 15 minutes. Seek medical advice if irritation or redness develops.
Eye Contact: Rinse eyes immediately with plenty of water, lifting upper and lower eyelids intermittently, for at least 15 minutes. Get prompt medical attention.
Ingestion: Rinse mouth thoroughly. Do not induce vomiting unless told by medical personnel. Seek medical attention right away. Give nothing by mouth to an unconscious person.
Most Important Symptoms: Cough, sore throat, skin redness, eye irritation, possible delayed symptoms of lung or digestive tract injury.
Notes for Medical Personnel: Treat symptoms, maintain adequate ventilation and monitor vital functions.
Suitable Extinguishing Media: Dry chemical powder, carbon dioxide, foam, sand (never use water or water spray on burning chemicals containing lithium derivatives)
Hazardous Combustion Products: Hydrogen fluoride, phosphorus oxides, lithium oxides, irritating or toxic fumes
Special Protective Equipment needed for Firefighters: Full protective clothing including self-contained breathing apparatus. Stay upwind, use caution to avoid inhaling hazardous decomposition products.
Fire Hazards: Product may emit toxic or corrosive fumes under fire conditions. Avoid area unless fully protected.
Personal Precautions: Wear respiratory protection, chemical-resistant gloves, goggles, and suitable clothing.
Environmental Precautions: Prevent leakage or spillage from entering the soil, sewer, or waterways. Notify authorities if contaminated water or soil is likely.
Methods for Containment and Clean-Up: Scoop up spilled material carefully to avoid dust generation. Place in a dry, airtight, labeled container for proper disposal. Clean contaminated floor and objects thoroughly with a suitable neutralizing agent. Ventilate area and avoid skin/eye contact throughout the process.
Advice for Non-Emergency Personnel: Evacuate area, ensure proper ventilation, and avoid exposure until clean-up is complete.
Handling: Use only in well-ventilated areas. Avoid dust formation. Always handle with nitrile gloves, protective goggles, and lab coat. Keep containers tightly closed. Do not eat, drink, or smoke while handling chemically active substances.
Storage: Store in a cool, dry, well-ventilated place. Separate from moisture, acids, oxidizing agents, and foodstuffs. Keep container tightly sealed, labeled, and out of direct sunlight. Store at room temperature to avoid decomposition. Maintain a spill kit and emergency eyewash station where material is stored or handled.
Special Storage Requirements: Store in original container with secondary containment if possible. Keep away from incompatible materials.
Occupational Exposure Limits: No established limits specific for LiDFP; general dust limits for lithium salts and phosphates may apply (consult relevant country or state regulations).
Engineering Controls: Local exhaust ventilation, enclosure of processes to minimize dust, laboratory fume hood for small quantity laboratory work.
Personal Protective Equipment (PPE): Nitrile gloves, chemical-resistant clothing, splash-resistant safety goggles, and approved particulate respirator appropriate for dust conditions. Always have access to a safety shower and eye wash station.
Hygiene Measures: Wash hands thoroughly after handling. Remove contaminated clothing before entering eating areas.
Environmental Controls: Use spill control procedures to prevent release to environment.
Appearance: White to off-white crystalline powder
Odor: Odorless or faint chemical odor
pH: Not applicable (decomposes in water, forms acidic solution)
Melting Point: 120-150°C (decomposition possible close to melting)
Boiling Point: Not applicable (decomposes before boiling)
Flash Point: Not flammable in solid state
Solubility: Hydrolyzes in water; soluble in carbonate solvents
Vapor Pressure: Not significant at room temperature
Density: Approximately 2.3-2.5 g/cm³
Partition Coefficient: No data available due to hydrolysis
Evaporation Rate: Not volatile
Auto-ignition Temperature: No self-ignition observed under ambient conditions
Decomposition Temperature: Decomposes slowly at temperatures >100°C, faster under moist or acidic conditions.
Chemical Stability: Stable under recommended storage conditions. Sensitive to moisture and hydrolyzes gradually upon exposure to air.
Reactivity: Reacts with water and acids to release toxic gas—hydrogen fluoride.
Conditions to Avoid: Keep away from moisture, high temperatures, strong acids, open flames, and oxidizers.
Hazardous Decomposition Products: Hydrogen fluoride, lithium oxide, phosphorus oxides, acidic gases.
Incompatible Materials: Water, acids, alkaline materials, strong oxidizers.
Polymerization: Will not self-polymerize.
Routes of Exposure: Inhalation, ingestion, skin and eye contact.
Acute Effects: Inhalation or ingestion may cause irritation of respiratory and gastrointestinal tract. Skin exposure results in redness or burning sensation. Eye exposure causes severe pain, possible corneal damage.
Chronic Effects: Repeated exposure may cause bronchitis, dermatitis, or aggravate pre-existing lung or skin conditions.
Toxicity Data: LD50 values not fully established for pure LiDFP; similar lithium fluorophosphates show moderate oral toxicity (275–500 mg/kg in rats).
Sensitization: No data
Carcinogenicity, Mutagenicity, Reproductive Toxicity: Not classified as carcinogen or mutagen, but fluoride compounds may pose long-term health risks in repeated or significant exposures.
Symptoms of Overexposure: Nausea, vomiting, diarrhea, cough, chest tightness, headaches, and long-term fluoride exposure results in dental/bone effects.
Ecotoxicity: Harmful to aquatic life due to lithium, fluoride, and phosphate ions. Toxicity depends on environmental conditions and dilution.
Persistence and Degradability: Undergoes rapid hydrolysis in water, forming lithium salts and releasing phosphate and fluoride ions.
Bioaccumulative Potential: Low for intact product. Components like lithium and fluoride may accumulate locally in soil and water.
Mobility in Soil: High mobility for hydrolysis products. Spill control necessary to avoid ground and surface water contamination.
Other Harmful Effects: Discharges in large quantities threaten aquatic organisms and soil microfauna.
Disposal Methods: Collect spilled material in sealed chemical waste containers. Dispose via a licensed hazardous waste contractor in compliance with all local, regional, and national regulations.
Contaminated Packaging: Rinse packaging thoroughly, dispose as hazardous waste. Do not reuse empty containers.
Special Precautions for Disposal: Never discharge into sewers or natural water bodies. Neutralization with suitable alkaline agent possible under controlled conditions before final waste processing. Record keeping for disposal and spill clean-up is essential for regulatory compliance.
Regulatory Reference: Consult local environmental authorities for guidance on permitted disposal procedures.
UN Number: 3288 (Toxic solid, inorganic, n.o.s., as appropriate for product)
Proper Shipping Name: Toxic solid, inorganic, n.o.s. (includes lithium and fluorine compounds)
Hazard Class: 6.1 (Toxic Substances)
Packing Group: II or III (based on test results and local regulations)
Label Requirements: Toxic substance, corrosive
Special Transport Precautions: Protect from moisture, keep containers sealed and away from incompatible cargo. Use secondary containment to prevent leakages.
Environmental Hazards: Classified as marine pollutant in many jurisdictions.
Transport in Bulk: Follow chemical cargo handling requirements.
Labeling: Conforms to GHS labeling, including pictograms and signal word. All safety and hazard information must appear in regional language.
Inventory Status: Check registration with domestic and international chemical inventories such as TSCA (US), REACH (EU), DSL (Canada), ENCS (Japan).
Workplace Safety Law: Use in accordance with OSHA, PPE, and right-to-know requirements. Consult local regulation for specifics on permissible exposure, spill response, and emergency planning.
Restrictions and Prohibitions: No blanket ban; may require notification or registration for new uses, especially in high-volume manufacturing.
Other Regulations: Includes Hazardous Materials Identification System (HMIS), National Fire Protection Association (NFPA), and workplace lab safety codes.
Reference Sources: GHS, IATA, IMDG, local chemical safety regulations, environmental protection standards, and supplier's own safety literature.
