Product Name: Propylene Glycol
Chemical Formula: C3H8O2
Synonyms: 1,2-Propanediol, Propane-1,2-diol
Recommended Use: Used in food processing, cosmetic products, antifreeze solutions, pharmaceuticals, and as a carrier fluid in hydraulic systems.
Manufacturer/Supplier: Refer to specific supplier documentation for name and contact numbers.
Emergency Phone: Refer to local emergency number.
Classification: Not classified as hazardous under GHS.
Main Hazards: Repeated or prolonged contact may cause mild irritation to the skin and eyes; ingestion in large quantities can result in dizziness or gastrointestinal discomfort.
Label Elements: No pictogram required.
Signal Word: None.
Hazard Statements: May cause mild skin or eye irritation.
Precautionary Statements: Wash thoroughly after handling; avoid excessive contact with eyes and skin.
Chemical Name: Propylene Glycol
CAS Number: 57-55-6
Concentration: 99-100%
Impurities/Additives: Trace water, minimal residual impurities from manufacture.
Inhalation: Move affected person to fresh air; seek medical attention if symptoms persist.
Eye Contact: Rinse cautiously with water for at least 15 minutes; remove contact lenses if easy to do; seek medical advice for persistent irritation.
Skin Contact: Wash with plenty of soap and water; get medical attention if rash or irritation develops.
Ingestion: Rinse mouth; do not induce vomiting; drink water in small sips; seek medical help if large amounts ingested or symptoms persist.
Note for Physicians: Symptomatic treatment recommended; no known specific antidotes.
Suitable Extinguishing Media: Water spray, dry chemical, carbon dioxide, alcohol-resistant foam.
Unsuitable Extinguishing Media: Not known.
Hazardous Combustion Products: Carbon monoxide, carbon dioxide.
Special Firefighting Procedures: Evacuate area, use water spray to cool fire-exposed containers, firefighters should wear self-contained breathing apparatus.
Explosion Risk: Low; propylene glycol is not considered highly flammable; fire may produce irritating or toxic vapors.
Personal Precautions: Ventilate area, ensure adequate protective equipment including gloves, eyewear, and, if aerosols present, respiratory protection.
Environmental Precautions: Prevent entry into sewers or waterways; contain spill using inert absorbent material.
Methods for Containment and Cleaning Up: Absorb with inert materials such as sand or earth; collect and dispose according to regulations; wash spill area with water.
Reporting: Notify regulatory agencies if spill enters waterway.
Safe Handling: Avoid unnecessary exposure; use in well-ventilated areas, avoid breathing mist or vapor, wash hands after handling.
Storage Conditions: Store in original, tightly closed containers in a cool, dry, well-ventilated place; keep away from strong oxidizers.
Incompatible Materials: Strong oxidizing agents such as nitric acid or perchlorates.
Specific Requirements: No special electrical classification needed.
Occupational Exposure Limits: ACGIH TLV: 10 mg/m³ (inhalable aerosol) as a recommended guideline.
Engineering Controls: Provide local exhaust for high vapor concentrations; ensure eyewash stations and safety showers are nearby.
Personal Protection: Wear chemical-resistant gloves (nitrile recommended), safety goggles, work clothing with long sleeves.
Respiratory Protection: Not required under normal circumstances; use NIOSH-approved respirator if in aerosol or high concentration environments.
Hygiene Measures: Wash hands and face before breaks and after work; remove contaminated clothing.
Appearance: Clear, viscous, colorless liquid.
Odor: Odorless or slight sweet odor.
pH: 6.0–8.0 (aqueous solution, 10%)
Melting Point/Freezing Point: -59°C
Boiling Point/Range: 188.2°C
Flash Point: 104°C (closed cup)
Evaporation Rate: Negligible at room temperature
Flammability: Not classified as highly flammable.
Upper/Lower Flammability Limits: 2.6%–12.6% (by volume in air)
Vapor Pressure: 0.07 mmHg at 25°C
Solubility: Completely miscible in water.
Partition Coefficient (n-octanol/water): -0.9
Viscosity: 58.1 mPa·s at 20°C
Relative Density: 1.036 g/cm³ at 20°C
Auto-ignition Temperature: 371°C
Chemical Stability: Stable when stored and handled under recommended conditions.
Reactive Hazards: Avoid contact with strong oxidizing agents, acids, and bases.
Conditions to Avoid: Heat, open flames, and prolonged exposure to light.
Hazardous Decomposition Products: May include carbon monoxide, carbon dioxide, and other toxic gases if burned.
Polymerization: Does not occur.
Acute Toxicity: Oral LD50 (rat): approximately 20,000–34,000 mg/kg; relatively low toxicity.
Skin Corrosion/Irritation: May cause mild, transient irritation.
Serious Eye Damage/Irritation: May result in mild and temporary irritation.
Respiratory or Skin Sensitization: Not known to cause sensitization.
Repeated Exposure: Prolonged or repeated contact may dry or irritate skin.
Carcinogenicity: Not listed by IARC, NTP, or OSHA as carcinogen.
Mutagenicity: Not considered mutagenic.
Reproductive Toxicity: Animal studies show no adverse effects at relevant doses for human exposure.
Other Information: Overexposure may result in drowsiness, headache, or gastrointestinal symptoms.
Aquatic Toxicity: LC50 (fish, 96h) > 100 mg/L; propylene glycol has low toxicity to aquatic life.
Persistence and Degradability: Readily biodegradable; breaks down by microorganisms in water and soil.
Bioaccumulation: Does not bioaccumulate; low potential due to high water solubility.
Mobility in Soil: High mobility, can leach to groundwater; not expected to pose significant long-term hazards.
Other Adverse Effects: Large spills may contribute to decreased oxygen in water ecosystems and affect aquatic organisms.
Waste Treatment Methods: Dispose according to local, regional, and national regulations.
Product Disposal: Small amounts can be flushed to sewer with plenty of water if permitted; large quantities should be collected for incineration or landfilling in licensed facilities.
Container Disposal: Triple rinse empty containers; recycle or dispose as non-hazardous waste unless contaminated with hazardous substances.
Special Precautions: Avoid release to environment; do not contaminate surface water or drains.
UN Number: Not regulated.
Proper Shipping Name: Not classified as dangerous goods.
Transport Hazard Class: Not hazardous.
Packing Group: Not assigned.
Environmental Hazards: Not environmentally hazardous for transport purposes.
Special Precautions for User: Keep containers tightly closed and upright during transit; avoid excessive heat.
Labeling Law: Not classified as hazardous according to OSHA Hazard Communication Standard.
Inventory Status: Listed in TSCA, EINECS, DSL, and other regulatory inventories.
SARA Title III (Sections 311/312): Not subject to reporting requirements.
California Proposition 65: Not listed.
REACH Status: Registered.
Other Regulations: FDA approved for specific food, pharmaceutical, and cosmetic uses within established limitations; workplace exposure should be managed in compliance with state and federal regulations.
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