Material Safety Data Sheet: Butyl Butyryl Lactate

Identification

Product Name: Butyl Butyryl Lactate
Chemical Name: Butyl 2-(butanoyloxy)propanoate
CAS Number: 34451-19-9
Recommended Use: Industrial solvent, cleaning product, intermediate in chemical syntheses
Manufacturer/Supplier: Contact supplier directly for current details
Emergency Contact Number: Refer to company’s emergency contact listing

Hazard Identification

Classification: Eye irritation (Category 2), Skin irritation (Category 2), Specific target organ toxicity—single exposure (Category 3)
Signal Word: Warning
Hazard Statements: Causes eye irritation; causes skin irritation; may cause drowsiness or dizziness
Precautionary Statements: Avoid inhalation; wear protective clothing and eye protection; wash skin thoroughly after handling; use only outdoors or in well-ventilated areas
Pictograms: Exclamation mark symbol
Potential Health Effects: Inhalation can cause respiratory tract irritation, skin absorption may irritate underlying tissue, direct contact with eyes results in redness and pain
Environmental Hazards: Harmful to aquatic organisms; avoid release to environment

Composition / Information on Ingredients

Chemical Name: Butyl Butyryl Lactate
CAS Number: 34451-19-9
Purity: Above 98%
Other Components: May contain trace impurities below occupational exposure thresholds

First Aid Measures

Eye Contact: Rinse eye immediately with plenty of water for at least fifteen minutes; lift upper and lower eyelids occasionally; seek medical attention if irritation persists
Skin Contact: Remove contaminated clothing; wash exposed skin thoroughly with soap and water; seek medical attention if irritation develops or persists
Inhalation: Move victim to fresh air; if breathing becomes labored, consult a physician immediately
Ingestion: Rinse mouth with water; do not induce vomiting; never give liquids to a person showing signs of sleepiness or unconsciousness; seek medical help promptly
Symptoms: May include stinging, redness, swelling, headache, nausea, dizziness

Fire-Fighting Measures

Suitable Extinguishing Media: Use carbon dioxide, alcohol foam, or dry chemical fire extinguishers
Unsuitable Media: Do not use a direct water jet, which can spread fire
Specific Hazards: Vapors may form explosive mixtures with air; containers may rupture in fire
Hazardous Combustion Products: Carbon oxides, small amounts of acrolein or other hazardous byproducts
Protective Equipment for Firefighters: Wear self-contained breathing apparatus and protective gear
Special Firefighting Procedures: Keep containers cool using water spray; prevent runoff into drains or watercourses

Accidental Release Measures

Personal Precautions: Evacuate area if necessary; wear gloves and protective clothing; ventilate enclosed spaces
Environmental Precautions: Prevent spillage from entering drains, soil, or waterways
Methods for Containment: Stop leak if you can do so without risk
Methods for Cleaning Up: Absorb liquid with inert material such as sand or vermiculite; place collected material in containers for disposal; clean spill area with detergent and water
Additional Advice: Notify relevant authorities if significant spill or release has occurred

Handling and Storage

Safe Handling: Avoid inhalation or contact with skin and eyes; keep away from heat, sparks, static discharge; use only with proper ventilation
Hygiene Measures: Do not eat, drink, smoke during use; wash hands thoroughly after handling
Storage Conditions: Store tightly closed in a cool, dry place; keep away from sources of ignition; avoid excessive heat or direct sunlight
Incompatible Materials: Strong acids, bases, strong oxidizing agents
Recommended Packaging: Use containers made of compatible, corrosion-resistant material

Exposure Controls and Personal Protection

Exposure Limits: No specific limits established for Butyl Butyryl Lactate; use general guidelines for organic solvents
Engineering Controls: Use local exhaust or general room ventilation; supply air movement to reduce vapor accumulation
Personal Protection: Wear chemical-resistant gloves (nitrile or neoprene), safety glasses or face shield, protective clothing
Respiratory Protection: Use NIOSH or certified respirator in poorly ventilated areas or where exposure risk exists
Workplace Monitoring: Monitor air concentrations if handling large amounts

Physical and Chemical Properties

Appearance: Clear, colorless or slightly yellow liquid
Odor: Slight, ester-like
Odor Threshold: Data not available
pH: Not applicable
Melting Point/Freezing Point: Below -20°C
Boiling Point: Estimated 220°C
Flash Point: 95°C (closed cup)
Evaporation Rate: Lower than water
Flammability: Combustible
Upper/Lower Flammability Limits: Data not available
Vapor Pressure: Less than 1 mmHg at 25°C
Vapor Density: Heavier than air
Relative Density: 1.02–1.04
Solubility: Slight in water; soluble in many organic solvents
Partition Coefficient (n-octanol/water): Approx. 2.1
Auto-ignition Temperature: 310°C
Decomposition Temperature: Data not available
Viscosity: Moderate, depends on temperature

Stability and Reactivity

Chemical Stability: Stable under general handling and storage conditions
Hazardous Reactions: Can react with strong oxidizers and strong bases
Decomposition Products: Releases carbon oxides and possibly acrolein at high temperatures
Conditions to Avoid: High heat, open flame, sources of ignition
Polymerization: Will not occur

Toxicological Information

Likely Routes of Exposure: Inhalation, skin and eye contact, ingestion
Acute Toxicity: Oral LD50 (rat): >2000 mg/kg; dermal LD50 (rabbit): >2000 mg/kg
Skin Corrosion/Irritation: May cause moderate redness, irritation after prolonged or repeated contact
Serious Eye Damage/Irritation: Causes eye irritation
Respiratory or Skin Sensitization: Data not conclusive for allergic reactions
Carcinogenicity: Not classified as a carcinogen; not on IARC, NTP, or OSHA lists
Specific Target Organ Toxicity: May cause drowsiness or dizziness if vapor is inhaled in large amounts
Chronic Toxicity: Prolonged or repeated exposure might cause dermatitis or aggravated existing skin disorders
Other Information: No evidence for mutagenicity or reproductive toxicity

Ecological Information

Aquatic Toxicity: Slightly toxic to aquatic life based on structural analogues
Persistence and Degradability: Expected to biodegrade slowly in soil and water, though some resistance to breakdown exists
Bioaccumulation Potential: Moderate, due to partial solubility and octanol/water partitioning
Mobility in Soil: Moderate; may leach through soil and reach groundwater
Other Adverse Effects: Avoid uncontrolled release into environment due to potential long-term impacts

Disposal Considerations

Waste Treatment Methods: Dispose of as hazardous chemical waste according to local, state, and federal regulations
Contaminated Packaging: Do not reuse containers; triple rinse and send to licensed reconditioner or dispose per law
Incineration: Permitted at approved waste disposal facilities
Precautions: Do not dump into drains; avoid dispersal in environment

Transport Information

UN Number: Not regulated under UN recommendations for transport of dangerous goods in most countries
Proper Shipping Name: Chemicals, not otherwise specified
Transport Hazard Class: Not classified as hazardous for transport by road, rail, sea, or air
Packing Group: Not assigned because not regulated as hazardous
Special Precautions for User: Use tightly sealed containers; avoid rough handling
Environmental Hazards: Not classified as marine pollutant

Regulatory Information

OSHA: Not regulated as a specific hazardous chemical
TSCA: Listed or meets listing requirements
DSL/NDSL: Listed
REACH: Consult EU supplier for current registration status
SARA Title III: Not listed under Section 302, 304, or 313
RCRA: Not listed as a hazardous waste
California Prop 65: Not known to contain chemicals requiring warning
Other Regulations: May be subject to chemical reporting requirements under state, federal, or international law