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Chemical Name: Methyl Tricosanoate
Common Synonyms: Tricosanoic acid methyl ester
Chemical Formula: C24H48O2
CAS Number: 1731-94-8
Physical Form: Wax-like solid or oily liquid depending on ambient temperature
Odor: Typically comes with a mild, fatty scent
General Use: Laboratory research, high-end lubricants, sometimes in fragrance and flavor work
Main Hazards: Low acute toxicity, but can irritate skin and eyes with direct contact. Inhalation of vapor or aerosols causes discomfort. Not considered highly flammable, still, combustion produces hazardous byproducts. Often overlooked, bulk powders or droplets on smooth surfaces create slip hazards.
Environmental Impact: Tends to persist in soils, not readily soluble, risk of bioaccumulation can build over time in aquatic systems if released in volume.
Main Ingredient: Methyl Tricosanoate, usually above 98 percent purity in industrial settings
Impurities: Traces of tricosanoic acid or shorter-chain esters depending on the production process
Eyes: Rinse immediately with plenty of water, remove contact lenses if present, keep flushing for at least 15 minutes. Seek medical advice if irritation continues.
Skin: Wash area with soap and water, and remove any contaminated clothing. Extended contact sometimes leads to mild dermatitis, so follow up if skin stays red.
Inhalation: Move to fresh air. If coughing or throat irritation remains, consult a medical professional.
Ingestion: Rinse mouth and drink water, but avoid inducing vomiting. Typically not considered acutely toxic, but get medical help, especially in case of large intake.
Extinguishing Media: Use foam, dry powder, or carbon dioxide. Water spray can help for cooling but isn’t effective for putting out hydrocarbon fires directly.
Hazardous Combustion Products: Emits carbon monoxide, carbon dioxide, and small amounts of heavier organics when burning.
Advice for Firefighters: Wear suitable protective gear, self-contained breathing apparatus. Keep containers cool with water spray from a safe distance.
Special Precautions: Spills near ignition sources can cause slipping or flare-up if vapors gather in enclosed spaces.
Personal Protection: Gloves, goggles, and non-slip footwear come in handy. Bigger leaks can make floors hazardous.
Containment: Cover spill with inert absorbent, such as sand or earth. Gather into labeled, sealable container for disposal.
Environmental Caution: Don’t let runoff reach drains or surface water. Even low-toxicity oils disrupt aquatic life after prolonged exposure.
Handling: Work with good local ventilation, and avoid open flames and hot surfaces. Try not to breathe dust or fumes, especially during heating or processing.
Storage: Keep in tightly sealed containers away from heat and direct sunlight. A dry, well-ventilated spot slows degradation or oxidation.
Personal Protective Equipment: Chemical-resistant gloves, eye protection, and protective clothing if splashing is likely. Respiratory protection isn’t needed in open spaces, though a mask helps in poorly ventilated labs.
Engineering Controls: Local exhaust or fume hoods, reliable spill clean-up kits within reach.
Workplace Practices: Avoid eating, drinking, or smoking close to where material is used. Wash thoroughly after handling.
Appearance: White solid at room temperature, melts into a clear, faintly yellowish oil
Melting Point: Roughly 44-46°C
Boiling Point: Noted above 250°C under reduced pressure
Solubility: Insoluble in water, soluble in ethanol and many organic solvents
Density: Close to 0.85-0.87 g/cm³
Vapor Pressure: Negligible at room temperature
Chemical Stability: Remains steady under recommended storage conditions. Exposed to strong oxidizers, it risks slow degradation. Heating above its decomposition temperature starts to break the long fatty chain.
Incompatible Materials: Strong acids, alkalis, oxidizing agents can cause unwanted reactions.
Hazardous Decomposition: Gives off acrolein, carbon monoxide, and fragments of fatty acids in fire or decomposition.
Acute Toxicity: Research shows low risk via oral, dermal, or inhalation exposure for mammals. Human data remains limited but aligns with animal findings.
Irritation: Direct contact occasionally causes mild, short-lived skin redness or eye watering.
Chronic Exposure: No evidence of carcinogenicity or mutagenicity on the books yet; still, not much long-term study outside lab animals.
Allergenic Potential: Not recognized as a common skin allergen, but small groups report irritation after frequent, unprotected exposure.
Persistence: Does not break down quickly in the environment, lingering especially in low-oxygen soils.
Bioaccumulation: Can collect in aquatic organisms if released repeatedly or in large volume.
Aquatic Toxicity: Toxicity to fish and invertebrates measured as low compared to common industrial chemicals, but even a “mild” fatty acid ester changes water quality with sustained discharge.
Degradation: Not rapidly biodegradable via typical municipal water treatment processes.
Small Quantities: Absorb in sand or earth, gather as chemical waste.
Large Volumes: Requires incineration by licensed handlers or approved chemical disposal per local laws. Avoid dumping into wastewater or open soil, since breakdown in the open is slow.
Container Handling: Triple rinse, deface labels, and recycle only in compliance with regulations.
Transportation Risk: Not regulated as a dangerous good by most international standards for road, sea, or air freight if properly packaged.
Container Requirements: Leak-proof, labeled clearly, and kept upright to avoid accidental opening during shipment.
Global Status: Methyl tricosanoate doesn’t show up on lists for highly hazardous substances. Regulatory attention focuses on proper labeling, safe disposal, and storage.
OSHA Status: Not listed as a specifically hazardous chemical, but workplace common sense applies.
REACH Listing (Europe): Must comply with general chemical safety standards, including documentation of safe handling and risk assessment for larger use cases.
