Product Name: Propylene Glycol Diester
Other Names: Propane-1,2-diol diester, Propylene Glycol Dicarboxylate Esters
Chemical Formula: CnH2n+2O4 (varies by acid residues)
Recommended Uses: Ingredient in lubricants, plasticizers, antifreeze, food additives, personal care items
Manufacturer Details: To be sourced from supplier packaging or invoice
Emergency Phone: Available through local poison control or regional safety hotlines
CAS Number: Information depends on specific ester form and should be obtained based on formulation
UN Number: Refer to transportation documents or regulatory entries for specifics
GHS Classification: Eye irritation (Category 2B), Skin irritation (Category 3), Specific Target Organ Toxicity – Single Exposure (Category 3, respiratory tract)
Signal Word: Warning
Hazard Statements: Causes mild skin irritation. May cause slight eye irritation. May cause respiratory discomfort if inhaled. Large exposures could result in headache, dizziness.
Precautionary Statements: Avoid breathing vapors. Wear protective gloves and goggles. Wash hands thoroughly after handling. Use only in well-ventilated areas.
Pictograms: Exclamation mark
Routes of Exposure: Skin contact, eye contact, inhalation, ingestion
Symptoms: Redness, itching, discomfort to eyes, mild coughing or sore throat after inhalation. Prolonged skin contact could result in dryness or cracking.
Main Ingredient: Propylene Glycol Diester (Concentration: 95–100%)
Synonyms: Propylene Glycol Dicaprylate, Dioleate, Dipelargonate, among others according to fatty acids
Impurities: Trace quantities of free propylene glycol, monoester byproducts, potential minor organic acids residue
Additives/Preservatives: Occasionally antioxidants (e.g., tocopherols), frequently below 1%
Relevant CAS Numbers: Dicaprylate (68937-75-7), Dioleate (78514-22-2) — check packaging for correct variant
General: Move affected person from exposure. Ensure fresh air, rest and warmth.
Inhalation: Remove to fresh air. Provide oxygen if breathing becomes difficult. Seek medical help if symptoms persist.
Skin Contact: Wash with soap and water immediately. Remove contaminated clothing and launder before reuse.
Eye Contact: Rinse thoroughly with water for at least 15 minutes holding eyelids apart. See a doctor if irritation continues.
Ingestion: Rinse mouth with water. Do not induce vomiting. Observe for symptoms and seek medical support if feeling unwell.
Most Important Symptoms: Eye redness, irritation, mild headache, nausea, dry skin.
Notes for Medical Personnel: Treat symptomatically based on clinical assessment.
Suitable Extinguishing Media: Water spray, foam, dry chemical, carbon dioxide
Unsuitable Extinguishing Media: High pressure water jet may spread product
Hazards in Fire: Releases irritating or toxic fumes such as carbon monoxide, carbon dioxide
Protective Gear for Firefighters: Full protective suit, self-contained breathing apparatus
Special Firefighting Procedures: Dike runoff to prevent environmental contamination. Avoid inhaling vapors. Cool containers with water fog.
Flash Point: Typical range: 150–220°C (302–428°F), varies by ester type
Explosion Data: Low risk, not expected to form explosive vapors under standard conditions
Personal Precautions: Evacuate area, wear gloves, goggles, and suitable protective clothing
Environmental Measures: Prevent entry into drains, sewers, or surface water
Cleanup Methods: Contain with inert absorbent (sand, earth). Collect spill in suitable sealed containers for disposal.
Decontamination: Wash contaminated surfaces with plenty of water and detergent. Ventilate area thoroughly.
Small Spills: Absorb with paper towels or absorbent pad, dispose according to regulations
Large Spills: Use diking to contain movement, contact emergency authorities for safe recovery
Handling Practices: Avoid contact with skin and eyes. Do not eat, drink or smoke during use. Use with proper ventilation.
Mechanical Controls: Ensure air circulation and minimal vapor buildup. Reliable local exhaust recommended.
Storage Requirements: Store in cool, dry, well-ventilated space protected from direct sunlight and incompatible substances. Keep containers tightly closed and upright.
Container Material: Store in chemically-resistant drums or bottles. Do not reuse packaging for food or personal care.
Conditions to Avoid: Extreme heat, sparks, open flames, oxidizers
Incompatibilities: Strong acids, bases, oxidizing agents; risk of hydrolysis or decomposition
Exposure Limits: No established occupational exposure limit for most propylene glycol diesters. General workplace limits for nuisance particulates (10 mg/m³ inhalable, 3 mg/m³ respirable) may apply.
Engineering Controls: Provide eye-wash stations and adequate ventilation. Use closed process systems if available.
Personal Protection Equipment (PPE): Chemical-resistant gloves (nitrile, neoprene), safety goggles, lab coat or coveralls. In high-exposure settings, use face shield and respiratory protection (P2 mask).
Hygiene Measures: Wash hands after handling. Remove and wash contaminated clothing after work.
Appearance: Clear to slightly yellowish oil. Liquid at room temperature.
Odor: Mild, fatty, sometimes faintly sweet
Odor Threshold: No specific data; generally low
pH: Not applicable (non-aqueous substance)
Melting Point/Freezing Point: −10°C to −30°C, highly dependent on ester form
Boiling Point: 300°C or higher (decomposes before boiling in many cases)
Flash Point: 150°C to 220°C
Evaporation Rate: Negligible
Flammability: Not classified as highly flammable
Vapor Pressure: <0.01 mm Hg at 20°C
Vapor Density: Heavier than air
Solubility: Not soluble in water, soluble in alcohols and most organic solvents
Partition Coefficient (n-octanol/water): LogP typically >3
Decomposition Temperature: About 250°C
Viscosity: Medium viscosity; specifics depend on fatty acid chain length
Density: Typically ranges from 0.91 to 0.98 g/cm³ at 25°C
Chemical Stability: Stable under storage at normal temperatures and pressures
Materials to Avoid: Strong oxidizing agents, acids, alkalis
Conditions to Avoid: Excess heat, flame, sparks, improper storage
Decomposition: Produces carbon dioxide, carbon monoxide, and small amounts of acidic vapors on burning or thermal breakdown
Polymerization: Hazardous polymerization not expected under normal conditions
Acute Toxicity: Estimated oral LD50 (rat): >5,000 mg/kg; considered low toxicity based on structure-activity relationship
Skin Contact: Not sensitzing, mild irritant possible with prolonged contact
Eye Contact: Mild, reversible irritation in laboratory studies
Inhalation: Unlikely at room temperature; mist may cause mild discomfort to respiratory tract
Carcinogenicity: Based on available data, not identified as carcinogen by IARC, NTP, OSHA
Reproductive Toxicity: No known adverse effects reported at normal occupational exposures
Long-Term Exposure: Extended or frequent contact could cause dermatitis
Absorption: Some systemic absorption via skin possible but limited
Medical Conditions Aggravated: Pre-existing skin or respiratory conditions may worsen with exposure
Environmental Fate: Readily biodegradable based on similar compounds, low potential for bioaccumulation
Aquatic Toxicity: Low; EC50 (Daphnia, 48h): >1,000 mg/L, considered practically non-toxic to fish and aquatic invertebrates
Soil Mobility: Expected to absorb to soil and sediments due to hydrophobic nature
Persistence/Degradability: Degrades through microbial activity in water, soil and air
Bioaccumulation Potential: Not expected to accumulate to a significant degree
Other Adverse Effects: No known significant hazard to the environment in normal use
Waste Treatment Methods: Dispose via chemical waste incineration or hazardous waste landfill in accordance with local regulations
Container Disposal: Rinse thoroughly before recycling or dispose as hazardous waste
Precautions: Never discharge to surface waters or municipal sewage systems
US RCRA Status: Not a listed hazardous waste but mixtures may require special handling.
European Waste Code: Typically 07 07 99 (wastes not otherwise specified from manufacture, formulation, supply and use of fine chemicals)
UN Number: Not assigned for most diesters due to low hazard profile
Proper Shipping Name: Not regulated for transport under ADR, IATA, IMDG
Transport Hazard Class: None assigned
Packing Group: None
Marine Pollutant: Generally not classed as marine pollutant
Special Precautions: Keep containers upright, prevent leaks during transit
US TSCA: Components listed or compliant
EU REACH: Registered or exempted based on tonnage and use
Canada DSL/NDSL: On inventory, subject to reporting thresholds
OSHA: Not classified as hazardous chemical under standard regulations
Other Country Regulations: Subject to chemical reporting under regional environmental and workplace safety rules
Label Requirements: Proper labeling for eye irritant hazard recommended
Workplace Restrictions: Implement safety measures according to site risk assessment, review employee training annually
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