Product Name: Ethyl 2-Oxocyclopentanecarboxylate
CAS Number: 763-25-1
Synonyms: Ethyl 2-oxocyclopentane-1-carboxylate, CECP
Recommended Use: Laboratory chemical, intermediate for synthetic applications
Manufacturer: Chemical supply company address and contact details, including emergency phone number for accidents or exposures
Classification: Flammable liquid, Skin irritant, Eye irritant, Harmful if swallowed or inhaled
GHS Label Elements: Flame symbol, Exclamation mark
Signal Word: Warning
Hazard Statements: Causes skin and eye irritation, may cause respiratory irritation, potentially harmful if inhaled or ingested, can form flammable vapors above 23°C
Precautionary Statements: Avoid breathing fumes, use with adequate ventilation, store away from heat and open flames, wear gloves and eye protection, wash thoroughly after handling, if swallowed seek medical attention
Chemical Identity: Ethyl 2-Oxocyclopentanecarboxylate
Chemical Formula: C8H12O3
Molecular Weight: 156.18 g/mol
Concentration: 98–100%
Impurities: May include trace amounts of related esters or residual solvents less than 1%
Eye Contact: Rinse under running water for several minutes, remove contact lenses if present and easy to do, continue rinsing, seek medical attention if irritation persists
Skin Contact: Wash affected skin area with soap and water, remove contaminated clothing, if symptoms develop seek medical care
Inhalation: Move to fresh air, ensure airway is unobstructed, supply oxygen if difficulty breathing, consult medical professional if respiratory symptoms continue
Ingestion: Rinse mouth, do not induce vomiting, drink water in small sips, consult physician immediately, do not administer anything by mouth to unconscious person
General Advice: Provide safety sheet to healthcare personnel, always seek professional care for significant symptoms
Suitable Extinguishing Media: Use carbon dioxide, foam, dry chemical powder, water spray for cooling containers
Unsuitable Media: Avoid direct water jet, may spread liquid and vapors
Hazards from Combustion: May emit carbon monoxide, carbon dioxide, irritating organic vapors
Protective Gear for Firefighters: Wear self-contained breathing apparatus, full chemical protective clothing
Special Hazards: Vapors may flash back, containers exposed to fire should be cooled with water from a safe distance
Personal Precautions: Evacuate unnecessary personnel, shut off ignition sources, ventilate area, wear gloves and protective eyewear
Environmental Precautions: Prevent further leakage, do not allow to enter sewers or public waters
Methods for Clean-up: Contain and collect spillage with non-combustible absorbents (sand, earth), place in suitable container for disposal, wash spill area with soap and water, dispose of clean-up materials as chemical waste, ventilate affected zone
Handling: Avoid skin and eye contact, avoid breathing vapors, use only with adequate ventilation, keep away from sources of ignition, use grounding and bonding for transfers, wash hands thoroughly after use, use in chemical fume hood if available
Storage: Store in tightly closed original container, in a cool, dry, well-ventilated place, away from incompatible materials such as oxidizing agents and strong acids, keep container upright and protected from physical damage, store away from heat, spark, or open flame sources, segregate from food or drink
Exposure Limits: No specific occupational exposure limit established for CECP, use workplace ventilation to control vapor levels
Engineering Controls: Use chemical fume hood or local exhaust ventilation, maintain adequate airflow
Personal Protection: Wear chemical-resistant gloves (nitrile or neoprene), safety goggles or face shield, lab coat or apron, use respiratory protection if ventilation is inadequate or exposure exceeds safe levels, wash hands after handling, do not eat, drink, or smoke in work areas
Appearance: Clear or slightly yellow liquid
Odor: Slight, ester-like
Boiling Point: Approximately 230°C
Melting Point: Not applicable in liquid form
Flash Point: 92°C (closed cup)
Autoignition Temperature: Data not established; treat as combustible
Vapor Pressure: Low at room temperature
Solubility: Slightly soluble in water, miscible with organic solvents
Density: 1.09 g/cm³ at 20°C
pH: Not determined
Partition Coefficient (log Kow): Estimated value around 1.2–1.8
Chemical Stability: Stable under recommended conditions of use and storage
Reactivity: May react with strong oxidizing agents, acids, or bases, may produce hazardous decomposition under fire conditions
Hazardous Polymerization: Not anticipated under normal handling
Decomposition Products: Carbon monoxide, carbon dioxide, possibly other toxic fumes if combusted
Conditions to Avoid: Strong heat, open flames, static discharge, contact with incompatible chemicals
Acute Effects: May cause moderate irritation to skin and eyes, inhalation may lead to coughing and discomfort, ingestion could result in nausea or vomiting
Chronic Effects: Prolonged contact may result in dermatitis or respiratory symptoms
Routes of Exposure: Skin contact, inhalation of vapors or mists, accidental swallowing
Toxicity Data: LD50 (oral, rat): >2000 mg/kg (estimated based on similar compounds), data on repeated dose not established
Carcinogenicity: No evidence of carcinogenicity from current data
Mutagenic and Reproductive Effects: Testing not established for this compound, handle with care
Aquatic Toxicity: Data specific to CECP limited, expected to be of moderate toxicity to aquatic organisms, based on structural analogues
Persistence and Degradability: Likely biodegradable in environment under aerobic conditions, does not persist long term
Bioaccumulation Potential: Low to moderate due to moderate partition coefficient
Mobility in Soil: Moderate mobility due to slight water solubility
Other Hazards: Avoid release to environment, spills can affect aquatic life and soil quality if not managed properly
Waste Disposal Methods: Dispose of as hazardous chemical waste through authorized chemical disposal contractor, incinerate under controlled conditions if permitted, avoid pouring into drains or natural waterways
Container Disposal: Decontaminate containers before recycling or disposal, attach proper labels for residue identification, follow local and national regulations for hazardous materials
UN Number: Not classified as a hazardous material for ground or air transport under most regulatory frameworks, confirm with current shipping regulations
Proper Shipping Name: Chemical, not regulated for most modes
Transport Hazard Class: May not be assigned, check for updates/regional requirements
Packing Group: Not classified
Environmental Hazards: Not a marine pollutant
Special Precautions: Secure packaging to prevent leaks, ensure labeling matches contents, avoid shipping with oxidizers or strong acids
Labeling: Complies with OSHA HazCom, EU CLP, GHS based on hazard classification
Inventory Status: Listed in TSCA (US), EINECS (EU), AICS (Australia) according to import/export requirements
Restrictions: No special usage restrictions known, for industrial and research use only
Risk Phrases: Irritating to skin and eyes, keep out of reach of children
Safety Phrases: Use personal protection, do not breathe vapor, avoid release to environment, comply with local, state, national, and regional guidelines
