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Material Safety Data Sheet: Menthol

1. Identification

Chemical Name: Menthol
Common Names: L-Menthol, Peppermint Camphor
CAS Number: 89-78-1
EC Number: 201-939-0
Uses: Flavoring agent in confections, pharmaceuticals, oral hygiene products, cosmetic formulations, topical preparations for soothing effects
Supplier Information: Contact information of manufacturer or distributor typically printed on packaging label
Emergency Telephone: 24-hour emergency contact number found on official paperwork

2. Hazard Identification

Classification: Irritant (skin and eyes), potentially harmful if ingested in large amounts
Label Elements: Signal word: Warning; hazard statements: causes serious eye irritation, may cause skin irritation, harmful if swallowed
Precautionary Statements: Avoid contact with skin and eyes, wash hands thoroughly after handling, use only in well-ventilated spaces
Symptoms of Exposure: Skin redness, burning sensation in eyes, abdominal discomfort if consumed, respiratory irritation from dust

3. Composition / Information on Ingredients

Substance: Pure menthol crystalline
Concentration: Greater than 99% menthol for pharmaceutical and food grade product
Impurities: Trace amounts of isomenthol, neomenthol, and other menthol isomers found in natural sources
Other Additives: None typically present in pure, refined product

4. First Aid Measures

Inhalation: Move person to fresh air, clear airway, monitor for persistent irritation or difficulty breathing
Skin Contact: Remove contaminated clothing, wash skin thoroughly with soap and water, seek medical advice if irritation develops
Eye Contact: Rinse gently with lukewarm water for at least 15 minutes, remove contact lenses, consult healthcare professional if symptoms persist
Ingestion: Rinse mouth, do not induce vomiting, drink water if conscious, seek medical help for significant exposure, monitor for nausea or dizziness

5. Fire-Fighting Measures

Flammability: Menthol is combustible in solid form
Suitable Extinguishing Media: Dry chemical, foam, CO₂, water spray used for small fires
Unsuitable Media: Avoid direct use of water jets which may spread burning material
Hazards During Fire: Fumes may release toxic vapors including carbon monoxide, carbon dioxide
Special Protective Equipment: Firefighters need full protective gear including self-contained breathing apparatus

6. Accidental Release Measures

Personal Precautions: Use gloves, eye protection, and dust mask if significant powders or dust generated
Environmental Precautions: Prevent entry into drains, sewers, or surface water bodies
Cleanup Methods: Sweep up crystal or powder gently to prevent dust, use non-sparking tools, ventilate area well, collect in sealed containers for proper disposal
Emergency Procedures: Evacuate personnel from contaminated area, avoid inhalation of dust or fumes

7. Handling and Storage

Handling: Avoid inhaling dust or vapors, do not eat, drink, or smoke while handling, wash hands after exposure, use in areas with good air circulation
Storage: Keep container tightly closed in a cool, dry, and well-ventilated place, avoid exposure to high heat or open flames, segregate from oxidizing agents and acids, keep away from food and potable water

8. Exposure Controls and Personal Protection

Engineering Controls: Use local exhaust or general room ventilation to control airborne concentrations
Personal Protective Equipment (PPE): Safety goggles, chemical-resistant gloves, dust mask or respirator (if aerosolized), protective clothing as needed for high quantities
Hygiene Measures: Change contaminated clothing, maintain good workplace hygiene, use eye wash stations and safety showers if available
Occupational Exposure Limits: No specific exposure limits, but lower exposure advised for sensitive individuals

9. Physical and Chemical Properties

Appearance: White or colorless crystalline solid
Odor: Strong, minty, characteristic aroma
Melting Point: 41–44°C (106–111°F)
Boiling Point: 212°C (414°F)
Density: 0.89 g/cm³ at 20°C
Vapor Pressure: 0.03 mmHg at 25°C
Solubility: Slightly soluble in water, highly soluble in alcohol and ether
pH: Not applicable
Partition Coefficient (n-octanol/water): Log P = 3.4–3.7
Other Properties: Non-corrosive, stable under storage conditions

10. Stability and Reactivity

Chemical Stability: Stable in sealed containers under normal conditions
Reactivity: No hazardous reactions reported under normal use
Conditions to Avoid: Heat, flames, sparks, strong oxidizers, acids
Hazardous Decomposition Products: Carbon oxides may form at high temperatures
Incompatible Materials: Strong acids, bases, oxidizing agents

11. Toxicological Information

Acute Toxicity: Oral LD50 in rats: 3300 mg/kg
Skin Corrosion/Irritation: May cause mild to moderate irritation on contact
Eye Damage/Irritation: Significant irritation possible with direct exposure
Respiratory Sensitization: Dust or vapor may cause coughing or shortness of breath
Chronic Effects: No known carcinogenic, mutagenic, or reproductive risks in humans from typical use
Routes of Entry: Inhalation, ingestion, dermal absorption
Target Organs: Gastrointestinal tract, skin, respiratory system in susceptible individuals

12. Ecological Information

Toxicity: Moderately toxic to aquatic organisms in high concentrations
Persistence and Degradability: Biodegradable by microorganisms, not considered persistent in the environment
Bioaccumulation: Low potential for bioaccumulation in aquatic species; not expected to concentrate
Mobility in Soil: Low mobility, binds to organic matter
Other Adverse Effects: May produce odor or flavor taint in water at low levels

13. Disposal Considerations

Waste Treatment Methods: Collect and seal in properly labeled containers, send to facility approved for disposal of chemical waste
Contaminated Packaging: Rinse thoroughly, follow community regulations for container recycling or disposal
Additional Notes: Avoid uncontrolled discharge into environment, local regulations take precedence over general recommendations

14. Transport Information

UN Number: Not classified as hazardous for transportation
Proper Shipping Name: Menthol
Transport Hazard Class: Not regulated for road, rail, air, or sea
Packing Group: None
Special Precautions: Protect from physical damage and exposure to moisture during shipment
Environmental Hazards: Keep sealed to prevent spillage or contamination

15. Regulatory Information

OSHA Status: Not listed as hazardous by US OSHA
TSCA Inventory: Listed
DSL (Canada): Listed
WHMIS Classification: D2B (toxic material causing other toxic effects)
Other International Regulations: Complies with EU and Japanese standards for use in food and cosmetic products
Label Requirements: Hazard and precautionary statements must appear on commercial containers as per local and international regulation
Restrictions: No significant restrictions when used as directed, consult country-specific regulations for workplace or consumer exposure