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Name: Ethyl 3-Aminocrotonate Chemical Formula: C6H11NO2 CAS Number: 2204-73-5 Common Uses: Building block in organic synthesis, largely found in pharmaceutical and fine chemical research Physical Description: Typically sold as a pale yellow to yellowish liquid, sometimes with a faint amine odor Solubility: Soluble in most organic solvents, barely mixes with water
Health Hazards: Exposure can lead to irritation of eyes, skin, and respiratory tract. Inhaling vapors or mist might trigger coughing, sore throat, or burning sensation. Prolonged skin contact might cause redness. Fire Risk: Flammable liquid and vapor, can ignite in the presence of spark or open flame. Environmental Hazard: Large spills may pose risk to aquatic life if allowed to reach waterways. Chronic exposure in substantial quantities can degrade water quality. GHS Classification: Flammable liquid; skin and eye irritant; may be harmful if inhaled or swallowed Personal Risk Factors: Individuals with pre-existing respiratory or skin conditions may show increased sensitivity
Component: Ethyl 3-Aminocrotonate Concentration: 97-100% Impurities: Typically contains minor traces of related amino esters from the manufacturing process Other Additives: Not commonly formulated with stabilizers or inhibitors
Inhalation: Remove from area of exposure immediately. Move to fresh air, loosen tight clothing. If symptoms persist, contact a medical professional without delay. Skin Contact: Wash area thoroughly with mild soap and running water. Remove contaminated clothing. Watch for continued redness or blistering, which could mean further attention is needed. Eye Contact: Rinse with clean water for at least 15 minutes, rolling eyelids often. Avoid rubbing the eyes—seek medical help if discomfort continues. Ingestion: Rinse mouth, avoid swallowing more. Do not try to induce vomiting for safety reasons—go straight for medical attention.
Suitable Extinguishers: Dry chemical powder, foam, or carbon dioxide. Water spray works only for small fires—never aim a water jet at pooling liquid. Hazardous Combustion Products: Burning may release toxic nitrogen oxides, carbon monoxide, and traces of other organic vapors. Precautions for Firefighters: Wear full protective gear and self-contained breathing apparatus. Stay upwind to avoid inhaling dangerous byproducts. Fire Hazards: Vapors mix easily with air and travel to sources of ignition; containers exposed to fire may burst from pressure buildup.
Personal Protection: Pull on chemical-resistant gloves and goggles, plus a laboratory apron or suit. Boost ventilation with fans or air handlers. Containment: Mop up with inert absorbent like sand or earth, then sweep into a sealed, labeled drum for safe disposal. Cleanup: Wipe all surfaces with mild detergent, flush spill area with lots of water so that traces don’t linger. Vent area thoroughly before allowing unprotected entry. Environmental Measures: Prevent chemical from reaching drains, rivers, or soil. Large amounts may need reporting to environmental authorities depending on region.
Handling Practices: Pour or transfer inside chemical-rated fume hoods. Wear proper protective equipment at all times and avoid breathing vapors or letting liquid touch skin. Storage Conditions: Bottle up in tightly sealed, clearly labeled containers. Cool, dry, and well-ventilated equipment rooms keep things stable and safe. Keep away from open flames, heat sources, and direct sunlight. Incompatible Substances: Strong acids, oxidizers, and bases may trigger hazardous reactions or break down the compound. Storage Life: Stable for months at room temperature when protected from extreme heat and moisture.
Engineering Controls: Chemical fume hoods and localized exhaust systems cut exposure to airborne gas or mist. Personal Protective Equipment: Choose chemical-resistant gloves made of nitrile or neoprene, splash goggles or faceshield, and cotton-lab-clothing beneath a chemical apron. Respirators with organic vapor cartridges may help during larger jobs or if ventilation dips. Hygiene: Wash hands after working, avoid eating or smoking in work zones, change out clothing after heavy spills. Workplace Exposure Limits: No widely published exposure limits for ethyl 3-aminocrotonate, prudence suggests treating it as a possible skin and respiratory irritant during handling.
Appearance: Pale yellow or colorless liquid Odor: Mild, sometimes ammoniacal Boiling Point: Roughly 210–215°C Melting Point: Often liquid at room temperature Density: Approximately 1.02–1.05 g/cm³ Solubility: Achieves high solubility in organic solvents like ethanol and ether, low in water Flash Point: Close to 100°C Vapor Pressure: Low at ambient conditions Reactivity: Maintains chemical stability under recommended storage conditions
Chemical Stability: Remains stable under recognized storage and work conditions for most laboratory and synthetic needs. Reactivity Profile: May react with strong acids, bases, or oxidizers. Avoid mixing with highly reactive chemicals. Hazardous Decomposition: Thermal breakdown or fire may eject toxic organic and nitrogen-containing fumes. Polymerization: Unlikely under standard storage and handling—no expectation of hazardous polymerization.
Acute Effects: Eye or skin exposure can trigger strong irritation and redness. Short-term inhalation leaves sensitive individuals coughing or with sore throats. Chronic Effects: Repeated and prolonged contact may aggravate existing dermatitis or respiratory sensitivities. No strong links to cancer or reproductive effects according to available academic papers, but research remains limited. Absorption Routes: Primarily through skin and inhalation; rare but possible to affect through ingestion, mostly among poorly ventilated users. Symptoms of Overexposure: Redness, irritation, watering eyes, sore respiratory tract, mild nausea
Aquatic Toxicity: Some studies suggest moderate toxicity to aquatic invertebrates, making wastewater treatment best handled with caution. Avoid letting significant spills reach surface waters. Persistence: Not especially persistent, but moderate bioaccumulation risk cannot be ruled out. Soil Impact: Breaks down in soil over time; high concentrations affect local bacteria or microfauna. Degradation: Subject to standard microbial breakdown in conventional treatment environments, but high doses may disrupt standard operations.
Method: Place waste and contaminated absorbents in sealed drums for licensed chemical disposal firms. Small amounts sometimes handled with hazardous waste incineration. Environmental Caution: Avoid sewer or public drain dumping. Mixing with municipal waste deserves scrutiny given potential damage to aquatic environments. Safe Handling: Clearly label all waste containers, protect from heat source during storage period before pick-up.
Transport Hazards: Ship as a regulated chemical in well-sealed, breakage-resistant containers. Flammable markings usually required for bulk quantities. General Requirements: Keep packs upright and protected from tumbling or leaking. Transportation by road, rail, or air has local rules to follow—generally best to depend on reputable logistics contractors. Storage During Transport: Cool, well-ventilated spaces help reduce risks of spill or ignition on the road.
Usage Restrictions: Some countries or states classify the chemical as a hazardous laboratory reagent and restrict large-scale industrial use. Labeling Requirements: GHS-compliant labels with hazard pictograms, clear hazard statements, and required safety precautions guide safe handling. Recordkeeping: Many workplaces keep detailed logs of use and disposal under chemical hygiene plans. Worker Rights: Safety data and training need to be accessible for anyone who handles or stores the chemical long-term.
