Chemical Name: Diethyl Carbonate
Common Names: Ethyl carbonate, Ethyl carbonate diethyl
CAS Number: 105-58-8
Recommended Use: Electrolyte solvent, intermediates in synthesis, specialty solvent
Manufacturer/Supplier: Chemical manufacturers, distributors, contact info varies by supplier
Emergency Contact: Refer to local emergency number, consult Poison Control Center
Hazard Classification: Flammable liquid (Category 2), Acute toxicity (oral, dermal, inhalation, Category 4), Skin irritation (Category 3), Eye irritation (Category 2A)
Signal Word: Danger
Hazard Statements: Highly flammable liquid and vapor. Causes skin and serious eye irritation. Harmful if swallowed, inhaled, or absorbed through skin.
Pictograms: Flame, Exclamation mark
Precautionary Statements: Keep away from heat, sparks, open flames. Wear protective gloves and eye protection. Avoid inhaling vapors. Store in well-ventilated place.
Potential Health Effects: Contact with liquid may cause irritation to eyes, skin, and respiratory tract. Ingestion or large exposure may result in headache, nausea, dizziness, and CNS depression.
Chemical Identity: Diethyl carbonate
Concentration: ≥99%
CAS Number: 105-58-8
Other Components: None significant at reportable levels
Inhalation: Move affected person to fresh air. Seek medical attention if symptoms develop such as shortness of breath or dizziness. Perform CPR if breathing stops.
Skin Contact: Remove contaminated clothing. Rinse skin with plenty of water for at least 15 minutes. Get medical advice if irritation develops.
Eye Contact: Rinse eyes with water for several minutes holding eyelids open. Remove contact lenses if present and easy to do. Seek ophthalmological evaluation if irritation persists.
Ingestion: Rinse mouth with water. Do not induce vomiting. Seek immediate medical attention.
Suitable Extinguishing Media: Dry chemical powder, carbon dioxide, alcohol-resistant foam.
Unsuitable Media: Do not use water jet as this may spread fire.
Specific Hazards: Vapors may form explosive mixtures with air. Container rupture may occur under fire conditions. Toxic fumes may form.
Protective Equipment: Firefighters need self-contained breathing apparatus and full protective gear. Eliminate ignition sources quickly.
Special Procedures: Cool tanks and containers with water spray if safe. Prevent runoff from entering drains or waterways.
Personal Precautions: Remove ignition sources. Evacuate area. Wear appropriate PPE including gloves, goggles, and respirator with organic vapor cartridge. Avoid breathing vapors.
Environmental Precautions: Prevent spillage from reaching sewer, surface water, or groundwater.
Methods for Cleaning Up: Contain with inert absorbent (sand, earth, vermiculite). Collect residue in labeled container for disposal. Ventilate area thoroughly. Wash spill site.
Safe Handling: Use only in well-ventilated areas. Avoid contact with eyes, skin, and clothing. Prevent static discharge; ground and bond containers. No smoking or open flames nearby.
Storage Conditions: Store in tightly closed, labeled containers. Keep in cool, dry, well-ventilated place away from heat or ignition sources. Store away from oxidizers, acids, and strong bases.
Other Advice: Use explosion-proof equipment. Keep containers upright and inspect for leaks. Limit storage quantities in work area.
Engineering Controls: Ensure good general or local exhaust ventilation. Use fume hood for laboratory work. Explosion-proof equipment required for large volumes.
Exposure Limits: No workplace exposure limits established for Diethyl carbonate as of current regulations, check updated local guidelines.
Personal Protection: Wear chemical-resistant gloves (nitrile, butyl rubber). Splash-proof goggles, face shield for risk of splash. Wear flame-resistant lab coat or apron. Respirator use for inadequate ventilation or large spills.
Hygiene Measures: Wash hands after handling, before eating or drinking. Do not eat, drink, or smoke in work area. Remove contaminated clothing and wash before reuse.
Appearance: Clear, colorless liquid
Odor: Mild pleasant odor
Odor Threshold: Not established
pH: Not applicable (non-aqueous)
Melting Point: -43 °C
Boiling Point: 126-128 °C
Flash Point: 26 °C (closed cup)
Evaporation Rate: No data available
Flammability: Flammable
Vapor Pressure: 2.7 kPa at 20 °C
Vapor Density: 4.7 (air=1)
Relative Density: 0.975-0.978 at 20 °C
Solubility: Slightly soluble in water, miscible with ethanol and many organic solvents
Partition Coefficient (log Kow): 0.74
Autoignition Temperature: 395 °C
Decomposition Temperature: >150 °C
Viscosity: 0.75 mPa·s (20 °C)
Chemical Stability: Stable under normal conditions and storage.
Conditions to Avoid: Heat, sparks, flames, static discharge, sunlight.
Incompatible Materials: Strong oxidizing agents, strong acids, strong bases, alkali metals.
Hazardous Decomposition: May produce carbon monoxide, carbon dioxide, and other toxic fumes if heated above decomposition.
Possibility of Hazardous Reactions: No hazardous polymerization expected under recommended conditions.
Acute Toxicity: Oral LD50 (rat): ~2,000 mg/kg. Skin LD50 (rabbit): >2,000 mg/kg. Inhalation LC50 (rat): >5 mg/L (4h).
Skin Corrosion/Irritation: May irritate skin, especially after prolonged contact.
Eye Damage/Irritation: Causes serious eye irritation with redness, tearing, pain.
Respiratory Effects: Inhalation of higher concentrations can cause nose, throat, or lung irritation.
Chronic Toxicity: No evidence of long-term carcinogenicity, mutagenicity, or reproductive toxicity in available animal data.
Sensitization: Not reported as a sensitizer on skin or respiratory tract.
Aquatic Toxicity: LC50 (fish, 96h): >100 mg/L (low hazard). EC50 (Daphnia, 48h): >100 mg/L.
Persistence/Degradability: Expected to be readily biodegradable under aerobic conditions.
Mobility in Soil: Moderate mobility expected.
Bioaccumulation: Low potential based on log Kow below 1.
Other Adverse Effects: Spillage into water bodies can cause temporary oxygen reduction, disrupt aquatic organisms.
Waste Treatment Methods: Dispose by incineration at approved waste facility. Use licensed contractor.
Contaminated Packaging: Triple rinse containers, offer for recycling if possible, dispose of per local regulations.
Other Information: Never dump into drains, surface water, or onto soil. Adhere to local, regional, and national disposal regulations.
UN Number: 2366
UN Proper Shipping Name: Diethyl carbonate
Transport Hazard Class: 3 (Flammable liquids)
Packing Group: II
Environmental Hazards: Not classified as marine pollutant
Special Precautions: Keep packaging secure and upright. Inform handlers about fire risk. Comply with national and international carriage requirements.
Global Inventory Status: Listed on TSCA (US), EINECS (EU), DSL (Canada), AICS (Australia), ENCS (Japan)
OSHA: Regulated as flammable liquid
SARA Title III: Not designated as extremely hazardous substance. Not listed under Section 313.
California Proposition 65: This material contains no chemicals known to the state of California to cause cancer or reproductive harm.
REACH: Registered substance under EU REACH regulations
Other Local Regulation: Specific workplace labeling, storage, and handling requirements vary. Refer to national chemical safety authorities for further guidance.
