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Product Name: Acetaldehyde Diethyl Acetal
Synonyms: 1,1-Diethoxyethane
CAS Number: 105-57-7
Recommended Use: Solvent and chemical intermediate in laboratories and industry
Supplier Information: Manufacturer and distributor details specific to safety protocols established by local regulation
Emergency Contact: Refer to national chemical emergency number or poison control
UN Number: 1145
Classification: Flammable Liquid (Category 2), Eye Irritant (Category 2), Skin Irritant (Category 2)
Signal Word: Danger
Hazard Statements: Highly flammable liquid and vapor. Causes skin and serious eye irritation. May cause drowsiness or dizziness by inhalation.
Precautionary Statements: Keep away from heat, sparks, open flames. Wear protective gloves, eye protection. Use only outdoors or in a well-ventilated area.
Hazard Pictograms: Flame, Exclamation mark
Other Hazards: Vapors may form explosive mixtures with air. May cause central nervous system depression in high concentrations.
Chemical Name: Acetaldehyde Diethyl Acetal
Content: 99% or greater
Impurities: Traces of ethanol, acetaldehyde
Molecular Formula: C6H14O2
EC Number: 203-306-4
Other Ingredients: None under GHS recommended for classification
Inhalation: Immediately move person to fresh air. Provide oxygen if breathing is difficult. Seek medical attention for respiratory symptoms.
Skin Contact: Wash off immediately with soap and plenty of water. Remove contaminated clothing. Seek medical attention for persistent irritation.
Eye Contact: Rinse thoroughly with plenty of water for at least 15 minutes, holding eyelids open. Seek immediate medical attention.
Ingestion: Rinse mouth. Do not induce vomiting. Give small quantities of water to drink if conscious. Seek urgent medical care.
Main Symptoms: Skin redness, eye irritation, headaches, dizziness, nausea from vapor exposure.
Suitable Extinguishing Media: Use alcohol-resistant foam, dry chemical powder, or carbon dioxide.
Unsuitable Extinguishing Media: Do not use water jet as it may spread fire.
Hazards from Combustion: Produces carbon monoxide, carbon dioxide when burned. Vapors form explosive mixtures with air.
Special Protective Equipment: Wear full protective gear and self-contained breathing apparatus. Approach from upwind.
Fire-Fighting Procedures: Cool containers exposed to fire with water spray. Remove from fire area if safe to do so.
Personal Precautions: Evacuate unnecessary personnel. Avoid breathing vapors. Use PPE including goggles, gloves, and respirator.
Environmental Precautions: Prevent entry into sewers, watercourses, basements, or confined areas.
Containment: Stop leak if safe. Absorb liquid with inert absorbent (e.g., sand, earth, vermiculite).
Cleanup Methods: Collect spilled material and place in proper container for disposal. Ventilate area.
Decontamination: Wash contaminated area with soap and water. Dispose of used absorbent according to local regulations.
Handling: Avoid inhalation of vapors, contact with eyes and skin. Use only with adequate ventilation. Do not smoke. Keep container tightly closed.
Storage Conditions: Store in a cool, dry place away from heat, sparks, and open flames. Store in original container, closed and upright.
Incompatible Materials: Oxidizing agents, acids, strong alkalis.
Specific Use Guidance: Keep away from sources of ignition. Ground and bond containers when transferring. Use spark-proof tools.
Occupational Exposure Limits: No established OSHA or ACGIH limit; minimize exposure. Company or local authority may recommend TWA < 100 ppm.
Engineering Controls: Use chemical fume hood and local exhaust ventilation.
Personal Protective Equipment: Nitrile or neoprene gloves, chemical splash goggles, flame-retardant lab coat, and appropriate footwear.
Respiratory Protection: Use NIOSH-approved organic vapor respirator in case of inadequate ventilation.
Hygiene Measures: Wash hands before breaks or eating. Do not eat, drink, or smoke in work area.
Appearance: Clear, colorless liquid
Odor: Sweet, fruity
Odor Threshold: Not available
pH: Not determined
Melting Point/Freezing Point: -69°C
Boiling Point: 102°C
Flash Point: 14°C (closed cup)
Evaporation Rate: Not available
Flammability: Highly flammable
Vapor Pressure: 40 hPa at 20°C
Vapor Density: 3.6 (air = 1)
Relative Density: 0.83 - 0.84 (water = 1)
Solubility: Slightly soluble in water, miscible with alcohol and ether
Partition Coefficient (n-octanol/water): 1.51
Auto-ignition Temperature: 195°C
Decomposition Temperature: Not available
Viscosity: Not available
Chemical Stability: Stable under recommended storage and handling conditions.
Possibility of Hazardous Reactions: May form peroxides if exposed to air or light for extended periods. Vapors may form explosive mixtures with air.
Conditions to Avoid: Heat, flames, sparks, moist air, strong light.
Incompatible Materials: Strong oxidizing agents, acids, bases.
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, aldehydes, and possibly peroxides.
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Acute Toxicity: LD50 (oral, rat): ~1850 mg/kg; LD50 (dermal, rabbit): >5000 mg/kg
Skin Irritation: Causes irritation, dryness, redness
Eye Damage/Irritation: Causes serious eye irritation and potential corneal injury
Inhalation Toxicity: Vapors cause dizziness, headaches; high concentrations may cause anesthesia or respiratory distress
Long Term Effects: No evidence of chronic toxicity when exposure limits respected. Liver and kidney function can be impaired after repeated, prolonged exposure.
Carcinogenicity: Not classified as a human carcinogen by IARC, ACGIH, NTP, or OSHA
Mutagenicity: No testing data available for genomic damage
Reproductive Toxicity: No evidence of reproductive toxicity based on available animal studies
Ecotoxicity: Harmful to aquatic life in high concentrations. LC50 (Fish, 96h): ~170 mg/L
Persistence and Degradability: Readily biodegradable in the environment.
Bioaccumulative Potential: Low, based on partition coefficient.
Mobility in Soil: High, likely to volatilize from soil or surface water.
Other Adverse Effects: No known significant impacts on ozone depletion or global warming.
Waste Disposal Methods: Dispose of contents and container according to local, regional, national, and international regulations. Incineration in approved facility preferred.
Contaminated Containers: Rinse thoroughly and offer for recycling or dispose according to local requirements.
Sewage Disposal: Avoid release to the environment and municipal sewage systems.
Special Precautions: Consult local, regional environmental authorities for guidance.
UN Number: 1145
Proper Shipping Name: Diethyl Acetal
Transport Hazard Class: 3 (Flammable liquid)
Packing Group: II
Environmental Hazards: Not classified as marine pollutant
Special Precautions for Transport: Cargo must remain upright and tightly closed during transport. Label in accordance with IMDG, IATA, and ADR regulations.
Regulatory Codes: ICAO/IATA, IMDG, ADR/RID list as hazardous material.
GHS Classification: Covered under Regulation (EC) No 1272/2008 and OSHA Hazard Communication Standard.
SARA Title III Section 313: Not listed for specific reporting.
TSCA (US): Listed in inventory.
REACH (EU): Registered.
Canadian WHMIS: B2 - Flammable liquid.
Label Elements: Must display hazard pictograms, signal word, and standardized hazard and precautionary statements as described.
Other Local or National Listings: Comply with country-specific rules for labeling, storage, and worker protection.
