Taking a Closer Look at 1-Chloropentane: Material Safety Data at a Glance

Identification

Name: 1-Chloropentane
Chemical Formula: C5H11Cl
Synonyms: n-Pentyl chloride, pentyl chloride
Appearance: Clear, colorless liquid with a sharp odor
Common Use: Organic solvent, intermediate for chemical synthesis

Hazard Identification

Acute Health Hazards: Irritates eyes, skin, and respiratory tract. Inhalation may cause dizziness, headache, and nausea. Repeated skin contact risks dermatitis.
Fire Hazards: Flammable liquid and vapor, forms explosive mixtures with air. Vapors may travel, ignite back from a distance.
Environmental Risk: Harmful to aquatic organisms, can cause long-term adverse effects in water environments.
GHS Classification: Flammable liquids – Category 3; Acute toxicity, oral – Category 4; Skin irritation – Category 2; Eye irritation – Category 2A
Key Symbols: Flame, exclamation mark, environment

Composition / Information on Ingredients

Main Ingredient: 1-Chloropentane, purity typically above 95%
Impurities: Trace amounts of pentanols, pentenes, other halogenated pentanes
Molecular Weight: About 106.6 g/mol

First Aid Measures

Inhalation: Move to fresh air. Keep comfortable for breathing. Seek medical advice if symptoms persist.
Skin Contact: Remove contaminated clothing immediately. Rinse skin with water for several minutes. Call a physician if irritation develops.
Eye Contact: Rinse cautiously with water for several minutes. Remove contact lenses if present, continue rinsing.
Ingestion: Rinse mouth with water. Do not induce vomiting. Seek attention from toxicologist or physician.

Fire-Fighting Measures

Suitable Extinguishing Media: Use dry chemical, carbon dioxide, alcohol-resistant foam. Water spray can cool containers but may spread fire.
Hazardous Combustion Products: Releases hydrogen chloride, phosgene, carbon oxides when burned.
Firefighter Protection: Self-contained breathing apparatus and protective gear. Approach from upwind to avoid toxic fumes. Remove containers from fire area if safe.
Special Fire Hazards: Vapors heavier than air, travel to ignition sources. Containers may explode under fire conditions.

Accidental Release Measures

Spill Response: Evacuate area, ventilate. Remove ignition sources. Wear chemical-resistant gloves, goggles, and respirator. Stop leak if safe. Use absorbent material, collect residue in closed containers.
Environmental Measures: Prevent entry into drains, waterways, or soil. Notify authorities if substantial spill occurs.
Clean-Up: Gather residue with non-sparking tools. Dispose according to local hazardous waste regulations.

Handling and Storage

Handling: Handle in fume hood or with strong ventilation. Ground all equipment to prevent static discharge. Avoid inhalation, ingestion, or contact with skin and eyes. Keep away from heat, sparks, and open flames.
Storage: Store in tightly sealed container, in a cool, dry, well-ventilated place. Separate from oxidizers, acids, and bases. Keep container upright to avoid leaks. Label containers clearly. Protect from sunlight.

Exposure Controls and Personal Protection

Occupational Exposure Limits: No established OSHA or ACGIH limits for 1-chloropentane, but exposure should be minimized as with other chlorinated hydrocarbons.
Engineering Controls: Use only in chemical fume hoods or with suitable local exhaust ventilation.
Personal Protection: Wear splash-proof goggles, chemical-resistant gloves such as nitrile, lab coats. Respirators equipped for organic vapors in area with poor ventilation or if exposure exceeds safe levels.
Hygiene Measures: Wash hands and face thoroughly after use. Remove contaminated clothing and wash before reuse. Eating, drinking, or smoking not allowed in the work area.

Physical and Chemical Properties

Physical State: Liquid
Color: Colorless
Odor: Sharp, chloroform-like
Boiling Point: 107-108°C
Melting Point: About -94°C
Flash Point: Around 25°C (closed cup)
Vapor Pressure: Moderate at room temperature
Solubility: Slightly soluble in water, miscible with organic solvents
Density: Approximately 0.87 g/cm³

Stability and Reactivity

Chemical Stability: Stable under recommended storage conditions.
Reactivity: Reacts with strong oxidizers, bases, and some metals producing heat and toxic gases.
Hazardous Reactions: May form phosgene and hydrogen chloride if exposed to fire or strong acids.
Conditions to Avoid: Heat, open flame, static discharge, incompatible chemicals.
Incompatible Materials: Strong acids, alkalis, oxidizers, some metals like aluminum or magnesium.

Toxicological Information

Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Short-Term Effects: Causes irritation to mucous membranes. Headache, dizziness, nausea possible from inhalation. Defatting of skin on contact.
Long-Term Effects: High, repeated exposure can damage liver, kidneys, nervous system. Not classified as carcinogenic but precautions limit risk.
Inhalation Toxicity (rat): Can cause central nervous system depression at high concentrations.
Dermal Toxicity: Not acutely toxic, but irritant.
Sensitization: Not known to cause allergic reactions.

Ecological Information

Aquatic Toxicity: Dangerous to water organisms, risk of toxic effects with high exposures or large discharges.
Persistence and Degradability: Resists rapid breakdown in environment, may bioaccumulate in aquatic species.
Mobility in Soil: Moderately low, but spills can reach groundwater due to slow evaporation.
Precautions: Prevent material from reaching soil or open water. Notify environmental authorities with large releases.

Disposal Considerations

Safe Disposal: Treat surplus and waste solutions as hazardous waste. Incinerate using chemical incinerator with afterburner and scrubber permitted by local regulations.
Container Disposal: Triple rinse empty containers, destroy by appropriate method, never reuse for food or water.
Regulatory Disposal: Follow all local, state, and federal guidelines for hazardous chemical disposal. Waste manifesting often required for offsite shipping.

Transport Information

Shipping Classification: Classified as flammable liquid for transport.
Proper Shipping Name: 1-Chloropentane, Flammable Liquid, n.o.s.
Packing Group: Usually Group III based on degree of hazard.
Labeling: Apply flammable liquid labels, observe special handling for hazardous cargo.
Avoid: Transport with incompatible chemicals.
Unload only by trained staff using spill containment gear.