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Chemical Name: 2-Buten-1-ol
Synonyms: Crotyl alcohol, 1-Buten-3-ol
Chemical Formula: C4H8O
CAS Number: 598-32-3
Classification: Flammable liquid, irritant
Hazard Statements: Liquid and vapors catch fire easily. Causes serious eye and skin irritation if spilled. Inhalation may result in headaches, dizziness, or respiratory discomfort. Swallowing can upset the stomach and, at higher doses, lead to more serious effects.
Precautionary Statements: Keep away from open flames. Avoid breathing vapors for extended periods. Use gloves and eye protection. Ventilate the work area well.
Crotyl Alcohol: 98% or higher
Impurities: Typically less than 2% combined unsaturated alcohols and small traces of butene derivatives
Inhalation: Move into fresh air. If symptoms like headaches or lightheadedness appear, rest and seek help if recovery is delayed.
Skin Contact: Remove contaminated clothing and wash skin with soap and water. Redness or discomfort usually clears up with proper washing.
Eye Contact: Flush eyes with running water for a few minutes. Remove contact lenses if easy, and rinse more. See a doctor if pain or redness sticks around.
Ingestion: Rinse mouth, drink a bit of water only if fully awake. See a medical professional for guidance.
Suitable Extinguishing Media: Foam, dry chemical, carbon dioxide. Water can spatter fire if applied directly.
Specific Hazards: Vapors form explosive mixtures with air, heavier than air so they can move along surfaces and reach ignition sources. Combustion releases toxic fumes like carbon monoxide.
Protective Equipment: Use self-contained breathing gear and full turnout gear for significant fires.
Personal Precautions: Block off sources of ignition. Wear gloves and splash-proof goggles.
Spill Containment: Absorb with inert material, like dry sand or earth. Avoid allowing run-off to drain or sewer.
Environmental Precautions: Crotyl alcohol can seep into soil or water, which isn’t good for aquatic life, so keep it from waterways.
Handling: Work in well-ventilated areas. Don’t eat, drink, or smoke while handling. Avoid spills or splashes.
Storage: Store in cool, dry, place, away from open flame, hot surfaces, or strong oxidizers. Keep container tightly closed.
Occupational Exposure Limit: Not widely established for this compound, but limit exposure to vapor using engineering controls.
Personal Protection: Use chemical-resistant gloves, eye protection such as goggles, and in poorly ventilated places, use respiratory gear. Wash hands well after handling.
Appearance: Clear, colorless to slightly yellow liquid
Odor: Weak, sweetish odor
Boiling Point: Around 120°C
Melting Point: Below freezing
Flash Point: Roughly 35°C (closed cup)
Solubility: Mixes partially with water, better in organic solvents
Vapor Pressure: Moderate at room temperature
Reactivity: Combines easily with strong oxidizers.
Chemical Stability: Stable under recommended handling and storage.
Hazardous Reactions: Produces flammable gases with alkali metals. Avoid strong acids, oxidizers, and heat.
Acute Exposure: Inhaling high concentrations irritates the airways and causes headaches or confusion. Splashing on skin can leave it red or sore. Eyes hurt for a few hours if exposed.
Chronic Exposure: Data on long-term effects isn’t complete, but similar unsaturated alcohols haven’t shown significant long-term impacts at low exposures.
Sensitization: No strong evidence points to crotyl alcohol as an allergen.
Aquatic Toxicity: Spilling into rivers or lakes can damage fish and smaller organisms. The substance doesn’t break down easily in nature.
Mobility in Soil: Spreads through soil and can get into groundwater if not contained.
Persistence: Tends to stick around, not quickly biodegradable.
Waste Treatment: Gather up and send to a chemical waste facility. Don’t pour down drains or into the trash.
Contaminated Packaging: Triple rinse before disposal, or arrange for professional chemical waste collection.
Hazard Class: Flammable liquid
Packing Instructions: Keep in strong, sealed containers away from heat. Label containers with flammable liquid warnings.
Handling Advice: Avoid rough handling. Check for leaks.
Inventory Listings: Found on several chemical inventories globally, including REACH and TSCA.
Classification: Seen as flammable and irritant in most chemical safety systems.
Workplace Laws: Most guidelines urge basic protections: gloves, ventilation, and fire protection practices.
