Chemical Name: Diethylpropanediol
Synonyms: 1,3-Diethyl-1,3-propanediol; DEPD
CAS Number: 123-45-6 (example)
Recommended Use: Intermediate for synthesis, plasticizer, solvent
Supplier: Major chemical supply chains use this compound for manufacturing specialty polymers and resins.
Emergency Contact: Refer to emergency contact numbers issued by the supplier for spills, health emergencies, and accidental exposure.
Classification: May irritate the eyes and skin. Harmful if swallowed or inhaled. Not classified as flammable under GHS, but vapors may form explosive mixtures with air in confined spaces.
Label Elements: Warning symbol for irritant. Signal word: Warning.
Precautionary Statements: Wear eye and skin protection, avoid inhalation, do not ingest, wash hands thoroughly after handling.
Hazards Not Otherwise Classified: Overexposure can cause headaches or dizziness due to vapors. Direct contact may cause local irritation.
Substance: Diethylpropanediol
Percent: 98-100% by weight
Impurities: May contain trace amounts of related glycol derivatives and organic solvents below 1%.
Molecular Formula: C7H16O2
Eye Contact: Flush eyes with water for at least 15 minutes. Remove contact lenses if present. Seek medical attention if irritation persists.
Skin Contact: Remove contaminated clothing. Wash skin with soap and water. Use emollient if dryness develops.
Inhalation: Move person to fresh air. Keep relaxed and at rest. Give oxygen if breathing is difficult.
Ingestion: Rinse mouth. Do not induce vomiting unless directed by medical professionals. Seek immediate medical attention.
Symptoms: May include redness, itching, coughing, nausea, headache, dizziness from inhalation.
Suitable Extinguishing Media: Water spray, CO₂, foam, dry chemical powder.
Specific Hazards: Product is combusible but not highly flammable. Vapors heavier than air can travel to remote ignition sources. May evolve acrid smoke, carbon monoxide, and carbon dioxide under fire conditions.
Personal Protective Equipment for Firefighters: Use self-contained breathing apparatus and standard fire-resistant clothing. Keep containers cool with water spray.
Special Procedures: Remove sources of ignition, prevent firewater contamination of drains and sewers.
Personal Precautions: Evacuate unprotected personnel, ventilate area, use appropriate PPE (gloves, goggles, protective clothing).
Environmental Precautions: Prevent entry into drains, groundwater, or surface water. Contain the spill with absorbent material such as sand, earth, or commercial absorbent.
Methods for Clean-up: Collect and dispose of soaked material in approved containers. Wash spill site after material is removed.
Notification: Notify local authorities if significant contamination of water or soil occurs.
Handling: Avoid breathing vapors. Avoid skin and eye contact. Keep away from sources of ignition. Work in well-ventilated areas or use proper engineering controls.
Storage: Store in tightly closed containers in cool, dry, and well-ventilated places, away from incompatible materials such as strong acids or oxidizers. Protect from physical damage.
Special Requirements: Use secondary containment where large quantities are stored to prevent accidental release.
Occupational Exposure Limits: No established OSHA PEL or ACGIH TLV. General glycol derivatives are typically controlled below 10 ppm due to possible irritant effects.
Engineering Controls: Use local exhaust or full enclosure ventilation to reduce vapor concentration at the workplace.
Personal Protective Equipment: Chemical-resistant gloves (nitrile or neoprene), splash-proof goggles, long sleeves or lab coat, and in high-concentration scenarios, a full-face respirator with an organic vapor cartridge.
Hygiene Measures: Wash hands before breaks and at end of work shift. Do not eat, drink, or smoke near the work area.
Appearance: Colorless to light yellow liquid
Odor: Mild, slightly sweet
Odor Threshold: Not established
pH: Neutral (approx. 7)
Melting Point / Freezing Point: -30°C (approx.)
Boiling Point: 210°C (approx.)
Flash Point: 105°C (closed cup)
Evaporation Rate: Slower than water
Flammability: Not classified as flammable, but can burn at elevated temperatures
Upper/Lower Flammability Limits: 1.2-9.5% (estimated)
Vapor Pressure: 0.5 mmHg at 20°C
Vapor Density: Heavier than air
Relative Density: 0.98 (water = 1)
Solubility: Miscible with water and most organic solvents
Partition Coefficient (n-octanol/water): log Pow 0.2
Auto-ignition Temperature: 370°C (estimated)
Decomposition Temperature: Not established
Viscosity: Moderate (40-60 cP at 25°C)
Chemical Stability: Stable under normal storage and handling conditions.
Reactivity: May react with strong oxidizers and acids.
Possibility of Hazardous Reactions: Under fire or thermal decomposition, releases carbon monoxide and other hazardous vapors.
Conditions to Avoid: High heat, open flames, sources of static electricity, incompatible chemicals.
Incompatible Materials: Strong acids, alkalis, oxidizing agents.
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, possibly other organic compounds.
Acute Toxicity: Oral LD50 (rat): estimated 3200 mg/kg. Skin LD50: above 6000 mg/kg. No reliable inhalation data.
Routes of Exposure: Skin, eyes, inhalation, ingestion.
Symptoms: Skin or eye irritation, headache, nausea, dizziness after vapor exposure.
Chronic Effects: Repeated or prolonged contact may cause dermatitis or mild mucous membrane irritation.
Carcinogenicity: No data suggesting carcinogenic risk. Not on IARC, NTP, or OSHA lists.
Other Effects: No reproductive or mutagenic toxicity reported in standard studies. Not classified as a sensitizer.
Eco-Toxicity: Data limited; anticipated low acute aquatic toxicity. May cause oxygen depletion at large concentrations in aquatic systems.
Persistence and Degradability: Expected to be biodegradable. Loss in the environment mainly through evaporation and microbial action in water and soils.
Bioaccumulative Potential: Low bioaccumulation predicted based on physicochemical properties (log Pow ~0.2).
Mobility in Soil: High solubility and low adsorption; expected to travel readily through soil to groundwater with spillage.
Other Adverse Effects: No evidence for significant impact on sewage treatment processes at normal release quantities.
Disposal Methods: Collect waste and sludge in sealed, labeled drums. Dispose at approved chemical disposal facilities. Incineration preferred.
Preventive Measures: Do not dispose to sewers or surface water. Avoid contamination of soil and groundwater.
Container Disposal: Rinse containers thoroughly before disposal or recycling.
Regulatory Requirements: Comply with local, regional, and national hazardous waste disposal regulations.
UN Number: Not regulated as dangerous goods by most transport authorities.
Transport Hazard Class: Not classified as hazardous for transport.
Packing Group: Not applicable
Proper Shipping Name: Diethylpropanediol
Special Precautions: Avoid shipment with incompatible chemicals such as strong oxidizers and acids. Protect from physical damage during transit.
Transport in Bulk: Follow requirements of MARPOL and IBC Codes for transport of bulk liquids.
US TSCA: Listed
EU REACH: Registered or pre-registered, check latest ECHA updates for status.
Canada DSL/NDSL: Typically listed for industrial use, confirm on current inventories.
OSHA Hazard Communication: Regulated as irritant.
SARA Title III: Not considered extremely hazardous.
California Prop 65: No listed ingredients known to the State of California to cause cancer or reproductive toxicity.
Other Regulations: Subject to workplace exposure evaluations as best occupational practice. International export and import require notification for volumes above logistic thresholds.
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