Product Name: Propylene Glycol Mono-n-Butyl Ether
Synonyms: 1-Butoxy-2-propanol; PnB
Chemical Formula: C7H16O2
CAS Number: 5131-66-8
Recommended Use: Solvent in paints, cleaners, inks, and coatings
Manufacturer Information: Relevant details provided by supplier
Contact for Emergency: Supplier’s emergency phone line listed on container
GHS Classification: Eye Irritation, Category 2A; Skin Irritation, Category 3
Pictograms: Exclamation Mark
Signal Word: Warning
Hazard Statements: Causes eye and mild skin irritation; may be harmful if swallowed; inhalation may cause respiratory irritation
Prevention: Avoid breathing vapors, wash hands afterwards, wear protective gloves, clothing, eye and face protection
Response: If in eyes, rinse cautiously with water for several minutes; if skin irritation occurs, seek medical attention
Chemical Name: Propylene Glycol Mono-n-Butyl Ether
Concentration: 98% or greater (commercial grade)
Impurities: Less than 2%, with trace organic byproducts
Other Ingredients: Do not contain added stabilizers or solvents
Inhalation: Remove person to fresh air, keep comfortable, provide oxygen if breathing is difficult, seek medical attention for symptoms
Skin Contact: Remove contaminated clothing, wash affected area with soap and water, seek help if irritation persists
Eye Contact: Rinse with water for at least 15 minutes, hold eyelids open, do not rub, consult a medical professional if irritation continues
Ingestion: Rinse mouth, do not induce vomiting, seek immediate medical attention; monitor for feeling unwell, drowsiness, or gastrointestinal distress
Most Important Symptoms: Eye redness, tingling or mild numbness in hands after contact, slight respiratory or digestive upset
Suitable Extinguishing Media: Dry chemical powder, foam, carbon dioxide, water spray
Unsuitable Extinguishing Media: High-pressure water jets
Specific Hazards: May emit acrid fumes, carbon oxides, and other harmful gases under extreme heat
Protective Equipment: Firefighters use self-contained breathing apparatus and full protective gear
Special Precautions: Move containers from fire area if safe, prevent runoff of contaminated firefighting water
Personal Precautions: Wear protective equipment, avoid breathing vapors, ventilate area
Spill Response: Contain spill, use inert absorbent (sand, earth), scoop into suitable container for disposal, clean area thoroughly
Environmental Precautions: Prevent entry into drains, surface waters, or soil
Cleanup Methods: Wash contaminated surfaces with water and detergent
Handling: Use only in well-ventilated areas, avoid contact with skin and eyes, do not eat or drink during use
Storage: Store in tightly closed containers in cool, dry, well-ventilated area; protect from heat, sparks, open flames, and incompatible substances like strong oxidizers
Other Precautions: Keep away from food and beverages, label containers clearly
Engineering Controls: Local exhaust ventilation recommended; maintain airborne concentrations below exposure limits
Occupational Exposure Limits: ACGIH TLV: 50 ppm (TWA); OSHA PEL: not established for this compound
Personal Protective Equipment: Impervious gloves, safety goggles, chemical-resistant apron; use respiratory protection if ventilation insufficient
Hygiene Measures: Wash hands before eating, drinking, or smoking; remove and clean contaminated clothing thoroughly
Appearance: Colorless to pale yellow liquid
Odor: Faint ether-like
Odor Threshold: Not determined
pH: Neutral (6-8 as supplied)
Melting Point: -77°C
Boiling Point: 171–174°C
Flash Point: 67°C (153°F, closed cup)
Evaporation Rate: Slower than butyl acetate
Flammability: Combustible liquid
Vapor Pressure: 0.4 mmHg at 20°C
Vapor Density: 4.6 (air = 1)
Relative Density: 0.88 (water = 1)
Solubility: Moderate (miscible with water)
Partition Coefficient: log Pow = 0.56
Autoignition Temperature: 240°C
Decomposition Temperature: Not available
Viscosity: 4–5 mPa.s at 20°C
Reactivity: Not considered reactive under normal conditions
Chemical Stability: Stable at ambient temperatures when used appropriately
Hazardous Reactions: Avoid contact with strong acids, bases, or oxidizing agents
Conditions to Avoid: Heat, flames, sparks, incompatible materials
Decomposition Products: Produces carbon monoxide, carbon dioxide, irritating fumes at high temperatures
Acute Toxicity: Oral LD50 (rat): 3300 mg/kg; Dermal LD50 (rabbit): >2000 mg/kg; Inhalation LC50 not established
Skin Corrosion/Irritation: Mild irritation possible with prolonged contact
Serious Eye Damage/Irritation: May cause moderate reversible irritation
Respiratory Sensitization: Not classified as a sensitizer
Carcinogenicity: Not classified as a known carcinogen
Other Effects: Prolonged or repeated exposure may cause skin dryness or cracking
Aquatic Toxicity: LC50 (fish, 96h): >100 mg/L; EC50 (daphnia, 48h): >100 mg/L
Persistence & Degradability: Readily biodegradable under aerobic conditions
Bioaccumulation: Not expected, low partition coefficient
Mobility in Soil: High mobility due to water solubility
Other Effects: Avoid release to environment, not classified as environmentally hazardous by GHS
Waste Treatment Methods: Incinerate under controlled conditions or dispose as hazardous waste, following all local regulations
Container Disposal: Empty containers should be triple-rinsed, punctured, and recycled if possible, or disposed of safely
Precautions: Do not discharge into sewer systems, surface water, or soil; coordinate with licensed hazardous waste disposer
UN Number: Not regulated for ground shipment in most countries
Transport Hazard Class: Not classified as dangerous for transport according to ADR/RID/IMDG/IATA
Packing Group: Not assigned
Special Precautions: Protect containers from movement and prevent leaks; label for content and emergency procedures
OSHA: Not listed as hazardous chemical under OSHA Hazard Communication Standard
TSCA: Listed on Toxic Substances Control Act inventory
Europe (REACH): Registered, safety assessment available
Canada (DSL): Listed on Domestic Substances List
SARA Title III: Not listed as a reportable substance
California Proposition 65: Not listed
Other Regulations: Follow workplace exposure limits and local environmental protection rules
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