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Product Name: N-Butyric Acid
Synonyms: Butanoic Acid, Butyric Acid, n-Butanoic Acid
Chemical Formula: C4H8O2
Molecular Weight: 88.11 g/mol
CAS Number: 107-92-6
Use: Manufacturing flavorings, pharmaceuticals, plastics, perfumes, food additives
Manufacturer Information: Manufacturer's name, address, and emergency contact number go here based on actual supplier details
GHS Classification: Flammable liquid (Category 3), Skin corrosion/irritation (Category 2), Serious eye damage/eye irritation (Category 1), Acute toxicity—oral (Category 4), Specific target organ toxicity—single exposure (Category 3, respiratory system)
Signal Word: Danger
Hazard Statements: Causes severe skin burns and eye damage, may cause respiratory irritation, harmful if swallowed, flammable liquid and vapor
Pictograms: Flame, Corrosion, Exclamation mark
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Substance: Pure N-Butyric Acid
Concentration: More than 99%
Impurities: Water and volatile organics, trace amounts only
Additives: Not intentionally added
Inhalation: Move person to fresh air, seek immediate medical advice if breathing difficulty or irritation continues.
Skin Contact: Remove contaminated clothing and thoroughly wash the skin with soap and plenty of water. Seek medical attention for persistent irritation, burns, or any adverse reaction.
Eye Contact: Immediately flush eyes with plenty of water for at least 15 minutes, lifting upper and lower eyelids occasionally. Get medical attention right away.
Ingestion: Rinse mouth with water without inducing vomiting, do not give anything by mouth to someone who is unconscious. Get medical attention quickly.
Most Important Symptoms: Tissue burns, severe irritation or redness, difficulty breathing from inhalation, possible abdominal pain, nausea on ingestion
Suitable Extinguishing Media: Dry chemical, foam, carbon dioxide, water spray (avoid direct water as liquid may spread)
Special Protective Equipment: Firefighters use self-contained breathing apparatus with chemical protective clothing
Hazardous Combustion Products: Burning can produce carbon oxides, acrid smoke.
Special Precautions: Keep away from sources of ignition, use appropriate measures to cool exposed containers that may overheat, and stay upwind to avoid toxic vapors.
Sensitivity to Static Discharge: May ignite on contact with static or open flame
Personal Protection: Wear splash goggles, gloves, apron, and appropriate respirator. Remove sources of ignition.
Environmental Precautions: Prevent entry into sewers, watercourses, or confined areas as it may cause environmental harm and smell complaints.
Containment: Cover spill with inert absorbent material like sand or vermiculite. Ventilate area well.
Clean Up: Use non-sparking tools for cleanup, collect material into approved, labeled waste containers. Wash area with large amounts of water after material has been picked up.
Recommended Practices: Avoid touch, inhalation of vapors, and ensure proper ventilation around the site.
Handling: Use only in well-ventilated spaces, keep container closed when not in use. Use spark-proof tools and explosion-proof equipment. Avoid breathing vapors or contact with skin and eyes. Wash thoroughly after handling.
Storage: Store in a cool, well-ventilated, dry area away from heat, ignition sources, and incompatible materials such as oxidizers and strong bases. Keep containers tightly closed and protect from physical damage. Use corrosion-resistant packaging.
Temperature Considerations: Avoid temperatures above 20°C (68°F) in storage areas for long periods, since vapors may accumulate.
Incompatible Materials: Alkalis, strong oxidizers, strong bases, some plastics or metals
Exposure Limits: OSHA PEL: 2 ppm (8-hour TWA); ACGIH TLV: 2 ppm (8-hour TWA)
Engineering Controls: Use local exhaust ventilation to keep vapor concentrations below exposure limits. Ensure eyewash stations and safety showers are close.
PPE (Personal Protective Equipment):
- Respiratory Protection: Use a full-face respirator if ventilation is inadequate.
- Skin Protection: Chemical-resistant gloves (butyl rubber, nitrile), lab coat or apron
- Eye Protection: Chemical splash goggles and a face shield
- Hygiene: No eating, drinking, or smoking in areas of use; wash hands before breaks or at end of shift
Appearance: Colorless to light yellow, oily liquid, strong and unpleasant odor (rancid butter-like)
Odor Threshold: Extremely low, detectable at 0.0004 ppm
pH: 3 – 4 (10% solution)
Melting Point: -7.9°C (17.8°F)
Boiling Point: 163.7°C (326.7°F)
Flash Point: 72°C (162°F; closed cup)
Flammability: Flammable liquid
Vapor Pressure: 2 mm Hg @ 20°C
Solubility: Soluble in water (7.3 g/100 ml @ 20°C), miscible with ethanol, ether
Specific Gravity: 0.96 (water = 1)
Viscosity: Low, flows easily
Evaporation Rate: Moderate (but slower than water)
Partition Coefficient (log Kow): 0.79
Chemical Stability: Stable under normal temperatures and pressures
Hazardous Reactions: Reacts with strong oxidizers and strong bases to form potentially hazardous products
Conditions to Avoid: Heat, flame, sparks, static discharge, exposure to acids or bases
Incompatible Materials: Strong oxidizers like potassium permanganate, nitric acid; strong bases; some plastics, metals
Hazardous Decomposition Products: Burning produces toxic carbon monoxide, carbon dioxide, acrid fumes
Acute Toxicity: Inhalation LC50 (rat): 3200 mg/m3/4h, Oral LD50 (rat): 2940 mg/kg, Dermal LD50 (rabbit): >5000 mg/kg
Certain Effects: Corrosive to skin, eyes, and mucous membranes; ingestion leads to burning pain, diarrhea, and gastrointestinal upset
Chronic Toxicity: Long-term exposure may cause dermatitis, respiratory irritation, conjunctivitis
Symptoms of Overexposure: Cough, nausea, headache, dizziness, burning sensations, lacrimation, abdominal pain
Carcinogenicity: Not classified as a human carcinogen by IARC, NTP, or OSHA
Mutagenicity: No reliable evidence of mutagenic effects in standard tests
Sensitization: Rare evidence of skin sensitization, more likely to cause irritation
Ecotoxicity: Harmful to aquatic life at high concentrations; LC50 (fish, 96h): 131 mg/L
Persistence: Readily biodegradable in water and soil, volatilizes from surface water
Bioaccumulation: Low potential (log Kow = 0.79)
Mobility in Soil: High, may leach to groundwater if released in quantity
Other Harmful Effects: Strong odor can create public nuisance; may lower pH of water bodies
Degradation Products: Breaks down to carbon dioxide and water by microorganisms
Method of Disposal: Incinerate in chemical incinerator with afterburner and scrubber, or use licensed hazardous waste disposal contractor.
Residue Handling: Do not allow residues to enter drains or natural water bodies; collect residual liquids in suitable containers.
Containers: Triple rinse and puncture containers before recycling or disposal, following all federal, state, and local regulations.
Special Instructions: Do not dispose of with general waste streams. Identify material by proper chemical name when submitting for disposal.
Waste Codes: U148 (Butyric acid), if applicable based on waste status
UN Number: UN2820
Proper Shipping Name: Butyric Acid
Transport Hazard Class: 8 (Corrosive), 3 (Flammable liquid)
Packing Group: III
Labels Required: Corrosive, Flammable
Marine Pollutant: No
Special Transport Precautions: Ship in tightly sealed, labeled containers. Segregate from oxidizers or foodstuffs, keep away from heat and flame. Emergency response information should accompany shipments.
TSCA Inventory Status: Listed on the US Toxic Substances Control Act (TSCA) inventory
OSHA Hazard: Regulated as a hazardous chemical
EPCRA/SARA Title III: Not listed as an Extremely Hazardous Substance; subject to general reporting for hazardous substances
RCRA Status: Hazardous Waste Number U148
DSL/NDSL (Canada): Listed/Compliant
EU Classification: C (Corrosive); R10 (Flammable), R34 (Causes burns), S26 (In case of contact with eyes, rinse immediately with plenty of water)
Other Information: All shipments must conform to transport, labeling, packaging rules under DOT, IATA, IMDG, and relevant regulators; local guidelines may impose tighter restrictions or requirements.
