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Chemical Name: Methyl Formate
Formula: C2H4O2
Common Uses: Starting point for many solvents, flavors, and rapidly evaporating cleaning agents in both industrial and lab settings.
Appearance: Clear, colorless liquid with a strong, sweet, ether-like smell.
CAS Number: 107-31-3
Synonyms: Formic acid methyl ester
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion.
Physical Hazards: This liquid likes to catch fire easily. Vapors can travel, find ignition sources, and cause flash fires far from the spill site.
Health Hazards: Eye irritation, skin burns, and breathing problems are real risks. High doses overwhelm the nervous system, bring headaches, drowsiness, and even unconsciousness.
Environmental Hazards: While it breaks down in air, big spills threaten water and soil through rapid evaporation and strong solubility.
Precautionary Statements: Use away from sparks and open flames; work in well-ventilated zones; always handle wearing proper safety gear.
Ingredient: Methyl Formate (Pure compound, generally over 99%)
Impurities: May show traces of formic acid, methanol, or water depending on handling and source.
Inhalation: Move outside into fresh air right away. If breathing stops or slows, seek urgent medical attention. Coughs or throat tightness, don’t ignore them.
Skin Contact: Remove liquid-soaked clothes. Rinse skin under running water for at least a quarter of an hour.
Eye Contact: Hold eyes open and gently rinse with water for at least 15 minutes. Seek further medical advice.
Ingestion: Rinse mouth but do not induce vomiting. Get professional help fast.
Extinguishing Media: Use foam, carbon dioxide, or dry chemical extinguishers. Water can spread burning liquid, so direct spray isn’t a good choice.
Special Hazards: Decomposition produces toxic gases like carbon monoxide and formic acid vapors. These really up the danger around flames.
Fire-Fighting Instructions: Get everyone not fighting the fire out of the area. Firefighters wear full protective suits and self-contained breathing equipment.
Explosion Risk: Vapor mixes with air and explodes if the right spark or flame appears. Tanks and drums may rupture due to pressure build-up from heat.
Personal Precautions: Keep yourself upwind and ready with gloves, goggles, and chemical-resistant clothing.
Environmental Precautions: Block the fluid from entering drains or waterways. Evaporating liquid can cause headaches and air quality drops.
Cleanup: Ventilate the area. Cover spills with earth, sand, or other non-combustible material. Collect it quickly in labeled containers for safe disposal.
Handling: Only work with methyl formate outside or in chemical hoods with fans running. Sparks from tools or static can ignite vapors, so always ground containers before transferring.
Storage: Store away from sunlight, heat, and anything flammable. Seal the container tight, keep upright, and stash in a cool, purpose-built cabinet.
Occupational Exposure Limits: Short-term limits may apply—follow your country’s laws.
Engineering Controls: Exhaust systems and closed transfer arms cut the risk of inhalation or leaks.
Personal Protection: Wear chemical splash goggles, gloves rated for solvents, and flame-retardant clothing. In case of vapor buildup, get a respirator approved for organic vapors.
Molecular Weight: 60.05 g/mol
Boiling Point: About 32°C (90°F)
Melting Point: Roughly -99°C
Flash Point: -19°C (-2°F)
Vapor Pressure: Very high; evaporates quickly at room temperature
Solubility: Mixes fully with water and most common solvents. Not picky about where it goes once spilled.
Appearance and Odor: Colorless liquid with an almond-like, ether smell.
Chemical Stability: Stable if sealed and kept cool. Heating or talking to acids, bases, or oxidizers can start runaway reactions.
Hazardous Reactions: Can polymerize or decompose under strong acid, base, or heat attacks.
Incompatible Materials: Strong bases and acids, oxidizers like chlorine, and open flames.
Hazardous Decomposition Products: Carbon monoxide, formic acid, and various smog-producing byproducts.
Likely Effects: Eyes burn and water, skin goes red or peels after even short contact. Breathing vapor triggers headaches, nausea, trouble focusing, and general tiredness.
Chronic Exposure: Few people work long-term with methyl formate, but regular exposure may strain liver and kidney function.
Acute Toxicity: In large doses, it can push the central nervous system close to collapse and trouble normal heart rhythms.
Routes: Most risk comes from inhaling it, but splashes on the skin matter too.
Environmental Fate: Breaks down in air and water fairly quickly. Doesn’t build up in living things, but plants and aquatic life suffer if a lot hits waterways at once.
Effects on Wildlife: Aquatic bugs, fish, and microbes cannot cope with large discharges. Water cleanup for major spills is key.
Biodegradability: With lots of sun and fresh air, methyl formate doesn’t linger. Without sunlight, breakdown slows.
Preferred Practices: Collect leftover or spilled methyl formate in steel drums lined against corrosion. Mark with hazard labels for flammability and toxicity.
Destruction: Professionals incinerate it in legal, licensed facilities. Pouring down the drain or dumping outdoors brings big risks to drinking water and soil.
Legal Status: Disposal must match national waste and environmental regulations, and records kept for inspection.
Shipping Classification: Methyl formate travels as a highly flammable liquid. Strong rules apply for trucks, trains, and ships moving loads through cities and ports.
Packing: Only steel or approved plastic containers get the green light.
Marking and Labeling: Packages need top-notch “flammable liquid” warnings for every step of the journey.
Occupational Safety: Many countries treat methyl formate as a hazardous substance. Inspectors check ventilation, worker protections, and storage records.
Environmental Controls: Spills trigger reporting rules and cleanup requirements. Environmental authorities monitor disposal.
Emergency Planning: Facilities storing large amounts develop emergency fire, evacuation, and spill response plans, shared with local fire departments.
