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Product Name: Pterostilbene
Chemical Name: 3,5-Dimethoxy-4'-hydroxy-trans-stilbene
CAS Number: 537-42-8
Molecular Formula: C16H16O3
Molecular Weight: 256.30 g/mol
Manufacturer Contact: Refer to supplier label for name, address, phone
Use: Laboratory reagent, nutraceutical research, not intended for diagnostic or therapeutic use in humans
Synonyms: PTER, trans-3,5-dimethoxy-4'-hydroxystilbene
Emergency Phone: Refer to manufacturer details
Classification: Not classified as hazardous under GHS criteria for most jurisdictions, but handle with care in laboratory settings
Hazard Symbol: Not required
Label Elements: No pictogram, signal word not required
Hazard Statements: May irritate eyes, skin, and respiratory tract in concentrated or powdered form
Precautionary Statements: Avoid breathing dust, maintain adequate ventilation, use proper protective equipment
Other Hazards: Material in powder form may cause combustible dust hazard in large quantities
Chemical: Pterostilbene
Purity: Typically >98%
CAS Number: 537-42-8
Impurities: No significant impurities affecting classification identified
Eye Contact: Rinse with plenty of clean water for several minutes. Remove contact lenses if present and continue rinsing. Obtain medical attention if irritation persists.
Skin Contact: Wash with mild soap and water. Seek medical advice for persistent irritation.
Inhalation: Move person to fresh air. Keep comfortable for breathing. Medical attention if respiratory symptoms develop.
Ingestion: Rinse mouth with water. Do not induce vomiting unless directed by a medical professional. Seek advice from poison center or physician.
Symptoms: Mild irritation to eyes, skin, or mucous membranes
Suitable Extinguishing Media: Dry chemical, carbon dioxide, foam, or water spray used on fires involving organic solids
Unsuitable Media: High-pressure water jet may spread powder
Specific Hazards: Combustible powder—may form explosive dust/air mixtures
Hazardous Combustion Products: Carbon monoxide, carbon dioxide, unidentified organic compounds
Protective Equipment: Firefighters wear self-contained breathing apparatus and full protective clothing
Advice for Firefighters: Evacuate area, treat run-off as hazardous, avoid inhaling combustion products
Personal Precautions: Use personal protective equipment. Avoid dust formation. Ventilate the area.
Environmental Precautions: Prevent entry into sewers or waterways.
Methods for Cleaning Up: Sweep up without creating dust. Use vacuum with HEPA filter if possible. Place material in appropriate waste container for disposal. Clean contaminated surfaces with water and mild detergent.
Precautions for Safe Handling: Use in well-ventilated areas. Handle using standard laboratory safety practices. Wear gloves, eye protection, and mask if dust may be generated.
Precautions for Safe Storage: Store tightly closed in a cool, dry, well-ventilated location. Avoid direct sunlight, heat, and incompatible substances.
Storage Conditions: Recommended temperature is 2-8°C. Store away from oxidizers and sources of ignition.
Incompatibilities: Strong oxidizing agents, strong acids
Occupational Exposure Limits: Not established for pterostilbene
Engineering Controls: Use local exhaust, fume hood or equivalent engineering controls to avoid inhaling dust.
Personal Protective Equipment: Use safety goggles, protective gloves (nitrile or latex), laboratory coat, and dust mask/respirator (N95 or equivalent) during handling of bulk powder.
Hygiene Measures: Avoid contact with skin, eyes, and clothing. Do not eat, drink, or smoke during use. Wash hands thoroughly after handling.
Appearance: Off-white to pale yellow crystalline powder
Odor: Odorless or faint aromatic
pH: Not available
Melting Point: 89–93 °C (192–199 °F)
Boiling Point: No data available due to decomposition
Solubility: Slightly soluble in water, freely soluble in ethanol and dimethyl sulfoxide (DMSO)
Density: Approximately 1.1–1.2 g/cm³
Vapor Pressure: Not determined
Flash Point: Not available
Partition Coefficient (Log Kow): Estimated 3.5
Stability: Stable under normal laboratory conditions if stored as directed
Chemical Stability: Stable under recommended storage and handling conditions
Reactivity: Not reactive under normal conditions
Possibility of Hazardous Reactions: May react with strong oxidizers
Conditions to Avoid: Excess moisture, high temperatures, open flames, incompatible materials
Incompatible Materials: Strong oxidizing agents, strong acids
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, potentially irritating organic fumes
Acute Toxicity: Data in animals suggest low acute oral toxicity, LD50 (oral, rat) > 1000 mg/kg
Skin Corrosion/Irritation: Possible mild irritation with prolonged contact
Serious Eye Damage/Irritation: Dust may cause temporary eye irritation
Respiratory Sensitization: Not known to cause allergic symptoms in respiratory tract
Carcinogenicity/Mutagenicity: No human data, not listed as carcinogen by IARC/NTP/OSHA
Reproductive Toxicity: No data available for humans
Other Effects: Animal studies report low toxicity, but standardized long-term safety in humans remains incomplete. Avoid unnecessary exposure according to standard laboratory safety practice.
Ecotoxicity: No significant aquatic toxicity expected at typical laboratory concentrations. Insufficient data for large-scale release.
Persistence and Degradability: Expected to degrade slowly in the environment.
Bioaccumulation: Not expected to bioaccumulate significantly based on log Kow.
Mobility in Soil: Likely to bind to organic matter due to hydrophobic character.
Other Adverse Effects: Avoid release to the environment. Follow local regulations for spill and waste cleanup.
Waste Treatment Methods: Dispose in accordance with local, regional, national, and international regulations.
Contaminated Packaging: Empty containers may retain product residue. Rinse container, dispose as laboratory waste.
Disposal Precautions: Do not dispose to drains or the natural environment. Work with a licensed chemical waste disposal contractor.
UN Number: Not regulated as a hazardous material for transportation
UN Proper Shipping Name: Pterostilbene
Transport Hazard Class: Not classified as dangerous
Packing Group: Not applicable
Environmental Hazards: Not classified as marine pollutant
Special Precautions: Protect from moisture, heat, and sunlight during transit
U.S. Regulations: Not subject to significant regulation under TSCA, SARA, or CERCLA. Not FDA-approved as a drug or supplement ingredient.
EU Regulations: Not registered under REACH. Not listed on Annex XIV or XVII.
Other International: No known restrictions in Canada, Japan, or Australia.
Labeling Requirements: Not classified as hazardous, no special labeling beyond standard laboratory chemicals.
