Chemical Name: 1,5-Dichloropentane
Synonyms: Pentamethylene dichloride, Pentamethylene chloride
CAS Number: 111-18-2
Recommended Use: Used in organic synthesis and as an intermediate for pharmaceuticals and other specialty chemicals.
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Classification: Flammable liquid, Harmful if inhaled or ingested, Causes skin and serious eye irritation
Signal Word: Warning
Hazard Statements: May cause damage to organs through prolonged or repeated exposure, Flammable liquid and vapor, Toxic to aquatic life, May cause respiratory tract irritation
Precautionary Statements: Wear protective gloves and eye protection, Keep away from ignition sources, Place containers upright and secure, Use only outdoors or in well-ventilated area, Avoid release into the environment
Chemical: 1,5-Dichloropentane
Concentration: 98-100%
CAS Number: 111-18-2
Other Components: Trace impurities by-products and stabilized agents below reportable thresholds
Inhalation: Remove affected person to fresh air, support breathing, seek immediate medical attention if symptoms develop
Skin Contact: Immediately flush skin with plenty of running water, remove contaminated clothing, gently wash with soap and water, get medical attention for persistent irritation
Eye Contact: Flush eyes thoroughly with water for at least 15 minutes, keeping eyelids open, seek medical assessment for continued discomfort
Ingestion: Do not induce vomiting, rinse mouth, drink water only if fully conscious, call physician or poison control immediately
Suitable Extinguishing Media: Dry chemical, foam, carbon dioxide, water spray
Specific Hazards: May produce toxic gases including hydrogen chloride, carbon monoxide, phosgene on thermal decomposition
Special Protective Equipment: Self-contained breathing apparatus, full protective gear
Firefighting Advice: Remove containers from fire area if possible, cool surrounding containers with water spray, avoid direct stream on product to prevent spreading
Personal Precautions: Evacuate area, ventilate locality, use personal protective equipment as required, avoid skin and eye contact
Environmental Precautions: Prevent entry into drains, sewers, or waterways, report uncontrolled releases to authorities
Methods for Clean-Up: Absorb spillage with inert material (sand, earth, vermiculite), transfer to suitable waste containers, wash spill area with plenty of water, dispose of in accordance with local regulations
Safe Handling: Use only in areas with proper ventilation, minimize vapor generation, wear protective equipment, avoid contact with eyes and skin, prevent inhalation of vapor or mists
Storage: Keep container tightly closed in a dry, cool, well-ventilated location, keep away from heat, sparks, open flame, store away from oxidizers and strong acids, keep out of reach of children
Occupational Exposure Limits: Consult national standards for guidance, limit exposure as low as reasonably achievable
Engineering Controls: Use explosion-proof ventilation and closed process systems, install emergency eyewash and deluge shower near worksite
Personal Protection: Chemical-resistant gloves, safety glasses with side shields, flame-retardant lab coat, suitable respiratory protection where vapor concentrations exceed exposure limits
Appearance: Clear, colorless to pale yellow liquid
Odor: Mild, ether-like odor
Odor Threshold: Not established
pH: Not applicable
Melting Point/Freezing Point: -64°C
Boiling Point/Range: 179–181°C
Flash Point: 63°C (closed cup)
Evaporation Rate: Not available
Flammability: Liquid and vapor
Explosive Limits: Lower: 2.0%, Upper: 10.9% (estimated)
Vapor Pressure: 1.5 mmHg at 25°C
Vapor Density: 5.1 (air = 1)
Relative Density: 1.114 at 20°C
Solubility: Insoluble in water; soluble in organic solvents
Partition coefficient (n-octanol/water): Log Kow 3.2
Auto-ignition temperature: 244°C
Decomposition Temperature: Not determined
Viscosity: Not determined
Chemical Stability: Stable under recommended handling and storage conditions
Reactivity: Reacts with strong oxidizing agents, strong bases, alkali metals
Hazardous Decomposition Products: Emits hydrogen chloride, carbon monoxide, carbon dioxide, phosgene if decomposed by fire
Conditions to Avoid: Elevated temperatures, open flame, sources of ignition
Polymerization: Not expected under normal conditions
Routes of Exposure: Inhalation, skin and eye contact, ingestion
Acute Toxicity (Oral): LD50 (rat): 1,800 mg/kg
Acute Toxicity (Dermal): Data not available, moderate irritation observed
Inhalation: Irritation to upper respiratory tract and mucous membranes
Skin Corrosion/Irritation: Causes moderate irritation
Eye Damage/Irritation: Causes severe irritation
Carcinogenicity: No data indicating carcinogenicity under current regulatory definitions
Mutagenicity: No available information
Reproductive Toxicity: Insufficient data
Other Hazards: Prolonged exposure can damage central nervous system, symptoms include drowsiness, headaches, or dizziness
Toxicity to Aquatic Life: Toxic in high concentrations to aquatic organisms, causes long lasting harmful effects
Persistence and Degradability: Poorly biodegradable, may persist under environmental conditions
Bioaccumulation Potential: Moderate potential, may accumulate in living organisms
Mobility in Soil: Low solubility in water, adsorbs to organic material, may pose risk of groundwater contamination
Other Adverse Effects: Limited direct data, avoid uncontrolled environmental release
Disposal Methods: Dispose of in accordance with local, regional, and national regulations for hazardous chemical waste, use licensed waste disposal contractors
Packaging Disposal: Drain containers thoroughly before disposal, do not reuse emptied containers, physically puncture and send for chemical waste processing where permitted
Special Precautions: Do not allow waste to contaminate soil, waterways, or drains, incineration may be the preferred method in compliance with environmental guidelines
UN Number: UN1993
UN Proper Shipping Name: Flammable liquid, n.o.s. (1,5-Dichloropentane)
Transport Hazard Class: 3
Packing Group: III
Reportable Quantity (RQ): Not established for this substance
Marine Pollutant: Yes
Special Precautions for Transport: Secure containers upright, handle in compliance with applicable regulations, follow emergency response protocols for leaks
OSHA Status: Regulated under Hazard Communication Standard
TSCA Inventory: Listed
SARA Section 313: Not subject to reporting requirements
WHMIS Classification (Canada): Flammable Liquid, Moderate Health Hazard
EU Regulation: Subject to REACH provisions, listed in EINECS
Other Applicable Regulations: National and local chemical management regulations apply, check regional guidelines for use, transport, and disposal
Label Requirements: Include hazard pictograms, signal words, and hazard/prevention statements as required under current GHS/CLP legislation
