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Chemical Name: Acetyl Acetone
Common Names: 2,4-Pentanedione
Synonyms: Diketone, Diacetylmethane
CAS Number: 123-54-6
Molecular Formula: C5H8O2
Appearance: Clear, colorless to light yellow liquid with a pleasant odor
GHS Classification: Flammable liquid, Acute toxicity (oral, dermal, inhalation)
Signal Word: Danger
Hazard Statements: Highly flammable liquid and vapor, Harmful if swallowed, Causes serious eye irritation, Harmful in contact with skin or if inhaled
Pictograms: Flame, Exclamation mark
Potential Health Effects: Irritates eyes, skin, and respiratory tract, May cause headache or nausea with high exposure
Ingredient: Acetyl Acetone (2,4-Pentanedione)
Concentration: Greater than 98% by weight
Impurities: Trace amounts of moisture and other minor byproducts from synthesis
Inhalation: Move person to fresh air, give oxygen if breathing is difficult, seek medical advice for persistent symptoms
Skin Contact: Wash with soap and plenty of water for several minutes, remove contaminated clothing, call a doctor if irritation persists
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses, seek medical assistance if discomfort continues
Ingestion: Rinse mouth, do not induce vomiting, call a poison control center or medical professional
Suitable Extinguishing Media: Dry chemical, CO2, alcohol-resistant foam, do not use water jet
Special Hazards: Emits toxic fumes such as carbon oxides under fire conditions, vapors may form explosive mixtures with air
Protective Equipment for Firefighters: Wear self-contained breathing apparatus and protective clothing to avoid inhalation of fumes
Additional Advice: Stay upwind, remove containers from fire area if safe, cool closed containers with water mist
Personal Precautions: Evacuate non-essential personnel, wear proper protective gear, ventilate area
Environmental Precautions: Prevent further leakage or entry into waterways and drains, avoid soil contamination
Methods for Clean-Up: Absorb with inert material (sand, earth, vermiculite), place in suitable container for disposal, ventilate spill area, wash area after removal
Safe Handling: Use only in well-ventilated places, avoid breathing vapors, avoid skin and eye contact, keep away from ignition sources
Storage Conditions: Keep containers tightly closed in a cool, dry, and well-ventilated place, store away from strong oxidizers and acids, use grounding and bonding during transfer to prevent static discharge
Incompatible Materials: Strong bases, oxidizing agents, reducing agents
Occupational Exposure Limits: OSHA PEL and ACGIH TLV for acetylacetone typically stand at 25 parts per million over an eight-hour period
Engineering Controls: Local exhaust ventilation, mechanical exhaust recommended
Personal Protective Equipment: Splash-proof goggles, chemical-resistant gloves (nitrile or neoprene offer better resistance), flame-resistant clothing, approved respirator if ventilation is limited or airborne levels exceed recommended limits
Appearance: Colorless to pale yellow liquid
Odor: Pleasant, fruity smell
Boiling Point: Around 139°C
Melting Point: -23°C
Flash Point: Around 35°C (closed cup)
Autoignition Temperature: Around 270°C
Solubility: Moderately soluble in water, freely miscible with most organic solvents
Vapor Pressure: Moderate at room temperature
Density: About 0.97 g/cm³ at 20°C
Chemical Stability: Stable under recommended storage and handling conditions
Reactivity: Flammable, reacts with strong oxidizers and bases, forms hazardous vapors on decomposition
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, other potentially toxic fumes
Polymerization: Not known to polymerize spontaneously, but conditions of high temperature or presence of acids and bases could promote degradation
Acute Toxicity: LD50 (oral, rat) approximately 875 mg/kg
Routes of Exposure: Inhalation, Skin Contact, Eye Contact, Ingestion
Immediate Effects: Irritation to eyes, nose, throat, and lungs, dizziness, headache, nausea with high exposures
Chronic Effects: Prolonged or repeated contact may cause dermatitis or respiratory irritation, limited data on long-term effects
Carcinogenicity: Not classified as a carcinogen by IARC, NTP, or OSHA
Other Risks: Central nervous system depression may occur in high concentrations
Aquatic Toxicity: Toxic to aquatic organisms with long-lasting effects
Degradability: Biodegradable under aerobic conditions, but breakdown may be slow in some environments
Bioaccumulation Potential: Low to moderate, based on partition coefficient
Mobility in Soil: Can migrate in soil, especially if spilled in large volumes, leaching could affect groundwater if not contained quickly
Waste Disposal: Dispose in accordance with local, state, and federal regulations, incineration in approved facility usually preferred
Container Disposal: Empty containers may retain residue; rinse thoroughly, puncture, and deposit at an approved waste facility
Precautions: Avoid release to the environment, never dump into drains, soil, or water systems
UN Number: 2310
Transport Hazard Class: 3 (Flammable Liquid)
Packing Group: III
Labels: Flammable liquid symbol required on packaging
Special Precautions: Keep away from heat, sparks, and open flames during transit, secure packages upright and prevent tipping
US TSCA: Listed
EU REACH: Registered and regulated
SARA Title III: Not listed under Extremely Hazardous Substances
Other Relevant Laws: Regulated by OSHA Hazard Communication Standard, subject to reporting under some European and Asian chemical safety rules
Labeling: Must display proper hazard warnings and storage condition instructions in workplace environments
