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Product Name: 2,4-Pentanedione
Synonyms: Acetylacetone, Acetoacetic acid, acetylacetone anion
Chemical Formula: C5H8O2
CAS Number: 123-54-6
Recommended Use: Laboratory chemicals, synthesis intermediate
Supplier: Chemical manufacturing and distribution companies
Contact Details: Emergency numbers listed by supplier, hazardous material hotline
Classification: Flammable liquid, Acute toxicity (oral, dermal, inhalation), Eye irritation
Signal Word: Danger
Hazard Statements: Highly flammable liquid and vapor, Harmful if swallowed, toxic by skin absorption, causes serious eye irritation
Pictograms: Flame, Exclamation Mark, Health Hazard
Precautionary Statements: Keep away from heat, open flames, sparks, use explosion-proof equipment, avoid breathing vapors, wash thoroughly after handling, use in well-ventilated space
Symptoms of Exposure: Coughing, sore throat, dizziness, headaches, skin redness, eye burning sensation
Chemical Name: 2,4-Pentanedione
Purity: >99%
Major Components: Acetylacetone
Impurities: None expected at significant concentration in industrial or laboratory-grade product
Other Names: Pentane-2,4-dione
Molecular Weight: 100.12 g/mol
Inhalation: Move person to fresh air, keep comfortable for breathing, seek medical attention if symptoms persist
Skin Contact: Remove contaminated clothing, rinse skin thoroughly with water, wash with soap, consult physician if irritation develops
Eye Contact: Flush with water for at least 15 minutes, remove contacts if present, continue rinsing, seek immediate medical attention
Ingestion: Rinse mouth with water, do not induce vomiting, get medical help right away
Notes to Doctor: Treat symptoms, monitor for central nervous system depression, provide supportive care
Suitable Extinguishing Media: Dry chemical, foam, CO2, water spray (do not use direct stream on burning liquid)
Special Hazards: Vapors may form explosive mixtures with air, burns with dense, acrid smoke, releases toxic fumes of carbon oxides on decomposition
Protective Equipment: Full firefighting turnout gear, self-contained breathing apparatus
Firefighting Instructions: Evacuate area, fight fire from safe distance, cool exposed containers using water spray
Explosion Sensitivity: Vapors heavier than air, may flow along surfaces to distant ignition points
Personal Precautions: Ventilate area, avoid contact with skin or eyes, wear chemical splash goggles, gloves, protective clothing
Spill Containment: Remove ignition sources, contain and collect spillage using inert absorbent material such as sand or vermiculite
Cleanup Methods: Place absorbed material in labeled containers for disposal, wash spill site with water after material pick-up
Environmental Precautions: Prevent runoff to drains, soil, and waterways, notify appropriate regulatory authorities in case of significant release
Handling: Avoid breathing vapors, prevent skin and eye contact, operate in fume hood or well-ventilated space, use spark-proof tools, ground and bond containers during transfer
Storage: Store in tightly closed containers, in cool, dry, well-ventilated location away from direct sunlight, incompatible materials (strong oxidizers, acids, bases), keep away from ignition sources
Storage Class: Flammable liquids
Special Considerations: Keep only in original container, do not store with food or drink, segregate from reactive or incompatible chemicals
Occupational Exposure Limits: No OSHA PEL or ACGIH TLV assigned, handle with caution due to acute toxicity
Engineering Controls: Use laboratory fume hood or adequate exhaust ventilation, maintain eye wash and safety showers nearby
Personal Protective Equipment: Chemical-resistant gloves (nitrile recommended), lab coat or apron, safety goggles or face shield, respiratory protection if airborne concentrations exceed recommended limits
Hygiene Measures: Do not eat, drink, smoke while using the product, wash hands thoroughly after handling
Appearance: Clear, colorless to pale yellow liquid
Odor: Sweet, pungent, somewhat fruity
Odor Threshold: Detectable at low ppm levels
pH: Slightly acidic (in aqueous solution)
Boiling Point: 139 °C
Melting Point: -23 °C
Flash Point: 30 °C (closed cup)
Flammability: Flammable liquid
Vapor Pressure: 5 mmHg at 20 °C
Vapor Density: 3.5 (air = 1)
Specific Gravity: 0.975 (water = 1)
Solubility in Water: Miscible
Partition Coefficient: log Pow = -0.40
Autoignition Temperature: 385 °C
Decomposition Temperature: No reliable data
Evaporation Rate: Moderate (butyl acetate = 1)
Viscosity: Not measured
Stability: Stable under recommended storage conditions, sensitive to strong oxidizers
Reactivity: Readily reacts with bases, oxidizers, could form peroxides over time
Hazardous Reactions: May polymerize or form explosive mixtures in presence of strong acids or bases
Decomposition Products: Releases carbon monoxide, carbon dioxide, irritating organic vapors
Incompatible Materials: Strong oxidizers, strong acids, strong bases, peroxides
Acute Toxicity: Oral LD50 (rat) ~ 875 mg/kg, dermal LD50 <1300 mg/kg
Inhalation: Vapors may cause irritation, drowsiness, headaches
Dermal Effects: Absorbed through skin, causes irritation, possible systemic toxicity
Eye Contact: Causes serious irritation, possible tissue damage with prolonged exposure
Chronic Effects: Liver and kidney damage in animal studies with prolonged exposure, not classified as carcinogenic
Other Data: No evidence of mutagenicity or reproductive toxicity at standard concentrations
Ecotoxicity: Toxic to aquatic organisms in high concentrations
Persistence and Degradability: Biodegradable in soil and water over time, though initial toxicity to microbes documented
Bioaccumulation: Low potential, log Pow well below 1
Mobility in Soil: High mobility, miscible with water, may leach to groundwater
Other Ecological Effects: Can lower dissolved oxygen if released in bulk
Waste Handling: Handle as hazardous waste, follow all local and regional guidelines
Method of Disposal: Incinerate in approved facility or treat via chemical oxidation by permitted waste disposal companies
Container Disposal: Triple rinse empty containers before discarding or recycling, remove and destroy all identifying labels
Environmental Protection: Do not release to surface water, soil, municipal sewers
UN Number: UN 2310
Proper Shipping Name: Pentanedione, 2,4-
Transport Hazard Class: 3 (Flammable liquid)
Packing Group: III
Label Requirements: Flammable Liquid
Transport Regulations: Subject to ADR/RID, IMDG, IATA and other international transport codes
Special Precautions: Keep containers tightly sealed, avoid transport with incompatible chemicals, use secondary containment
US Regulations: Listed on TSCA Inventory, subject to SARA Title III reporting for flammable hazards
European Union: Covered under REACH regulations, hazard classifications assigned, workplace exposure screening mandatory
Canada: Appears on DSL/NDSL, WHMIS Flammable Liquid – B2, acute toxicity – D2B
Other International Regulations: Covered under GHS criteria, label in accordance with country-specific requirements, consult local agencies regarding disposal and handling rules
