Material Safety Data Sheet - Cyclopentyl Chloride

Identification

Chemical Name: Cyclopentyl Chloride
CAS Number: 142-18-7
SYNONYMS: Chlorocyclopentane
Recommended Use: Used as a chemical intermediate in synthesis
Manufacturer: [Contact Supplier for Details]
Emergency Contact: [Enter Emergency Information]

Hazard Identification

GHS Classification: Flammable liquid (Category 3), Skin irritant (Category 2), Eye irritant (Category 2A), Acute toxicity oral (Category 4)
Signal Word: Warning
Hazard Statements: Flammable liquid and vapor; Harmful if swallowed; Causes skin and eye irritation
Pictograms: Flame, Exclamation Mark
Precautionary Statements: Keep away from heat, sparks, and open flame. Avoid breathing vapor. Wear protective gloves and eye protection. Wash thoroughly after handling.

Composition / Information on Ingredients

Chemical: Cyclopentyl Chloride
CAS Number: 142-18-7
Concentration: ≥ 98%
Impurities: May contain traces of hydrochloric acid and related chlorinated hydrocarbons

First Aid Measures

Inhalation: Move person to fresh air. Call a physician if symptoms develop.
Skin Contact: Remove contaminated clothing. Wash skin with water and soap for at least 15 minutes. Seek medical attention for irritation.
Eye Contact: Rinse thoroughly with water for at least 15 minutes. Remove contact lenses if present. Continue rinsing and get medical advice.
Ingestion: Rinse mouth. Do not induce vomiting. Get immediate medical attention.
Symptoms: Can cause dizziness, headache, skin redness, and eye discomfort

Fire-Fighting Measures

Suitable Extinguishing Media: Alcohol-resistant foam, dry chemical powder, carbon dioxide
Unsuitable Media: Direct water jet
Hazards from Combustion: Releases toxic fumes of hydrogen chloride, carbon monoxide, carbon dioxide
Protective Equipment: Firefighters wear self-contained breathing apparatus and full protective clothing
Special Procedures: Cool fire-exposed containers using water fog; prevent run-off from entering waterways

Accidental Release Measures

Personal Precautions: Remove all ignition sources. Use non-sparking tools and wear chemical-resistant gloves, goggles, and appropriate clothing
Environmental Precautions: Prevent entry into drains, soil, and waterways
Cleanup Methods: Absorb spill with inert material such as vermiculite or sand. Transfer contaminated material to a suitable container. Ventilate area. Dispose of waste according to regulations.

Handling and Storage

Handling: Work in a well-ventilated area. Keep containers tightly closed. Ground and bond containers during transfer. Avoid inhalation and contact with skin or eyes. Use non-sparking tools.
Storage: Store in a cool, dry, and well-ventilated space, away from ignition sources and incompatible materials such as strong oxidizers and acids. Keep containers tightly sealed. Incompatibility: Oxidizing agents, strong bases

Exposure Controls and Personal Protection

Exposure Limits: No OSHA PEL or ACGIH TLV established for cyclopentyl chloride
Engineering Controls: Use local exhaust ventilation to reduce vapor exposure
Personal Protection: Wear appropriate chemical-resistant gloves, splash goggles, laboratory coat or chemical apron. In case of high vapor concentration, use an approved respirator.
Hygiene Measures: Wash hands thoroughly after handling. Remove contaminated clothing.

Physical and Chemical Properties

Appearance: Colorless to pale yellow liquid
Odor: Sweet, chloroform-like
Odor Threshold: No data available
pH: Not applicable
Melting Point: -60°C
Boiling Point: 106-108°C
Flash Point: 32°C (closed cup)
Evaporation Rate: No data
Flammability: Flammable liquid and vapor
Vapor Pressure: 30 mmHg at 20°C
Vapor Density: 3.7 (air = 1)
Relative Density: 0.982 g/cm³
Solubility: Immiscible in water; soluble in organic solvents
Partition Coefficient (log Kow): ~2.6
Autoignition Temperature: 255°C
Decomposition Temperature: No data
Viscosity: No data available

Stability and Reactivity

Chemical Stability: Stable under normal conditions
Hazardous Reactions: May react violently with strong bases or oxidizers
Conditions to Avoid: Heat, sparks, flames, incompatible chemicals
Incompatible Materials: Strong oxidizing agents, alkali metals, bases
Hazardous Decomposition Products: Produces hydrogen chloride, carbon oxides under fire or decomposition

Toxicological Information

Routes of Exposure: Inhalation, skin absorption, eye or oral contact
Acute Toxicity: Oral LD50 (rat): approx. 500-2000 mg/kg. Harmful by ingestion.
Skin Corrosion/Irritation: Causes skin irritation. Prolonged contact can increase risk.
Eye Damage/Irritation: Causes significant eye irritation, may cause temporary vision effects.
Inhalation: Dizziness, drowsiness, nausea, may irritate respiratory tract
Chronic Effects: Prolonged use can damage liver or kidneys
Carcinogenicity: Not listed by IARC, NTP, or OSHA as a known carcinogen

Ecological Information

Ecotoxicity: Toxic to aquatic life. LC50 (fish): data not available; harmful to insects and microorganisms
Persistence and Degradability: Moderately persistent. Slowly biodegradable in soil and water
Bioaccumulation Potential: May bioaccumulate in aquatic organisms
Mobility in Soil: Limited mobility due to volatility and low water solubility
Other Adverse Effects: Spills may contaminate surface or groundwater

Disposal Considerations

Waste Disposal Methods: Dispose of contents and containers through licensed waste disposal contractor. Do not pour into drains or waterways
Contaminated Packaging: Remove all residues and dispose according to local, regional, or federal regulations
Special Instructions: Incinerate in chemical incinerator equipped with afterburner and scrubber

Transport Information

UN Number: UN 1993
Proper Shipping Name: Flammable Liquid, N.O.S. (Cyclopentyl Chloride)
Class: 3 (Flammable Liquid)
Packing Group: III
Label: Flammable liquid
Environmental Hazards: Marine pollutant
Transport in Bulk: Follow MARPOL and IBC Code requirements

Regulatory Information

OSHA Status: Considered hazardous according to OSHA Hazard Communication Standard (29 CFR 1910.1200)
TSCA Inventory: Listed
SARA Section 313: Not subject to reporting
CERCLA Reportable Quantity: Not assigned
California Prop 65: Not listed
Other Regulations: Subject to community right-to-know, fire code, environmental, and workplace safety rules