Product Name: Citral 1,2-Propylene Glycol Acetal
Common Names: Citral PG Acetal, 3,7-dimethyl-2,6-octadienal-1,2-propylene glycol acetal
Chemical Formula: C11H20O3
CAS Number: 83939-62-8
Recommended Use: Fragrance Ingredient, Flavor Compound
Supplier: Manufacturer or distributor contact information required for inquiries or emergencies
Emergency Contact: National Poison Center: 1-800-222-1222
Classification: Eye Irritation Category 2A, Skin Sensitizer Category 1
GHS Label Elements: Warning symbol (Exclamation Mark), Signal Word: Warning
Hazard Statements: May cause mild skin irritation, causes significant eye irritation, may cause allergic skin reactions
Precautionary Statements: Avoid release to environment, use personal protective equipment, wash hands thoroughly after handling, wear gloves and eye protection
Potential Health Effects: Short-term contact triggers stinging in eyes; prolonged exposure may trigger allergic response in predisposed individuals.
Chemical Name: Citral 1,2-Propylene Glycol Acetal
Concentration Range: 85–100%
Impurities: May contain trace propylene glycol, water, related acetal derivatives as process by-products
Eye Contact: Rinse thoroughly under running water for at least 15 minutes, hold eyelids apart, remove contact lenses, immediate medical attention if irritation persists
Skin Contact: Wash off soap and plenty of water; remove contaminated clothing, seek medical evaluation for rash or continued symptoms
Inhalation: Provide fresh air, monitor for respiratory symptoms, call for medical help if coughing or shortness of breath arises
Ingestion: Rinse mouth, drink small amounts of water only if conscious, never induce vomiting, call poison center or medical professional immediately
Extinguishing Media: CO₂, dry chemical, foam, do not use water jet
Hazards During Fire: Vapors may form explosive mixtures with air, can decompose under heat to generate irritating or toxic fumes (acrolein, carbon oxides)
Fire Fighting Instructions: Wear full protective gear, SCBA for confined spaces, keep containers cool by spraying with water from a safe distance, prevent run-off contamination
Personal Precautions: Evacuate unnecessary personnel, ventilate area, use personal protective equipment
Environmental Precautions: Prevent leakage into drains, soils, waterways
Cleanup Methods: Soak up with inert absorbent (sand, earth); sweep up, transfer to proper waste containers; avoid dust and vapor formation, wash spill site completely after clean-up
Handling: Operate in well-ventilated areas, avoid direct contact with skin or eyes, refrain from eating, drinking, smoking while handling, employ adequate exhaust ventilation at points of emission
Storage: Store in tightly sealed container, cool, dry, and well-ventilated place, keep away from heat, ignition sources, and incompatible substances (acids, oxidizers), segregate from foodstuffs and beverages, monitor container integrity and label clarity
Exposure Limits: No established ACHIH or OSHA exposure limits as of 2024
Engineering Controls: Use local exhaust, good general room ventilation
Personal Protection: Chemical-resistant gloves (nitrile, neoprene), protective goggles or face shield, lab coat or impervious apron, respiratory protection (N95 or organic vapor cartridge) in areas with inadequate ventilation, eye wash and shower stations nearby
Appearance: Colorless to pale yellow transparent liquid
Odor: Citrus with sweet fruity notes
Odor Threshold: Information not available
pH: Not applicable (neutral, non-aqueous)
Melting Point/Freezing Point: < -10°C
Boiling Point/Range: 244°C at 1 atm
Flash Point: 105°C (closed cup)
Evaporation Rate: Low
Flammability: Not readily flammable, but combustible at above 100°C
Vapor Pressure: 0.2 mm Hg at 25°C
Vapor Density: 6.7 (air = 1)
Solubility in Water: Low (miscible with alcohols and non-polar solvents)
Partition Coefficient (log Kow): Approximately 2.6
Viscosity: Mobile liquid, 5–12 cP at 25°C
Density: 1.025 g/cm³ at 20°C
Stability: Stable under recommended storage conditions
Reactivity: Can react with acids or strong oxidizers yielding hazardous byproducts
Hazardous Reactions: Polymeric decomposition possible with prolonged heating or acid presence
Decomposition Products: Aldehydes, carbon monoxide, and carbon dioxide
Incompatible Materials: Strong acids, strong bases, oxidizing agents
Acute Toxicity: LD50 (oral, rat): >5000 mg/kg; considered low acute toxicity
Skin Corrosion/Irritation: Mild skin irritation possible; greater risk for sensitive individuals
Eye Damage/Irritation: Causes irritation; burning, redness, tearing
Respiratory Sensitization: No extensive data, possible irritant effect at high concentrations
Skin Sensitization: May cause rash in sensitive individuals
Repeated Dose Toxicity: No reliable evidence of systemic toxicity from repeated low-dose exposure
Carcinogenicity: Not listed as carcinogenic by IARC, NTP, OSHA
Mutagenicity: Not known to cause genetic mutations
Reproductive Toxicity: Limited data; not known to cause reproductive harm
Ecotoxicity: Expected to be moderately toxic to aquatic organisms; LC50 (fish, 96 h): >10–100 mg/L
Persistence and Degradability: Biodegradable under aerobic conditions; breaks down through microbial activity
Bioaccumulation: Low potential due to moderate log Kow
Mobility in Soil: Limited, not likely to leach into groundwater heavily
Other Adverse Effects: Harm to aquatic plants and invertebrates at high concentrations possible, best kept out of storm drains and natural waterways
Waste Treatment Methods: Dispose of in accordance with local, regional, and national regulations
Contaminated Containers: Triple rinse, then dispose appropriately
Precautions: Never pour into household plumbing or surface water, avoid direct landfill disposal unless approved, preferred route is authorized chemical incineration
UN Number: Not classified as hazardous for transport under UN recommendations
Transport Hazard Class: Not regulated
Packing Group: None assigned
Proper Shipping Name: Not applicable
Environmental Hazards: Not marine pollutant
Special Precautions: Secure containers; shield from extreme heat or cold, keep upright and tightly sealed during shipment
Safety, Health and Environmental Regulations: Subject to chemical control regulations in EU (REACH, CLP), US (TSCA), Canada (DSL), Australia (AICS), and other major markets
Labeling Requirements: Requires exclamation mark pictogram for irritation
Inventory Status: Listed on main global inventories
Workplace Restrictions: Employers responsible for hazard communication and accessible SDS
Additional Information: Always check national and local regulations, as interpretation can change with emerging data and evolving regulatory stances, particularly for fragrance and flavoring raw materials
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