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Product Name: Methyl Nitrite
Synonyms: Nitrous acid, methyl ester; Nitromethane oxide
CAS Number: 624-91-9
EC Number: 210-866-2
Recommended Use: Chemical intermediate, laboratory reagent
Manufacturer: [Company-specific details omitted for general use, search company MSDS for contact details]
Emergency Contact: Refer to local poison control and emergency response numbers, specialists should be consulted in the event of exposure or spill
Classification: Flammable gas, toxic on inhalation, possible explosion risk when under pressure or mixed with air
Signal Word: Danger
Hazard Statements: Extremely flammable gas, toxic if inhaled, may cause drowsiness or dizziness, may cause organ damage through prolonged exposure
Pictograms: Flame, Skull and Crossbones, Exclamation Mark
Precautionary Statements: Avoid heat or any spark sources, ground containers during transfer, keep away from open flames, use only outdoors or with adequate ventilation, do not breathe gas/fumes, evacuate area during large releases
Chemical Name: Methyl Nitrite
Concentration: Pure substance, 100%
CAS Number: 624-91-9
Impurities: No significant impurities likely to affect chemical safety for competent handlers
Inhalation: Remove person to fresh air immediately, keep them calm, monitor for signs of low blood pressure or respiratory distress, provide oxygen if breathing is difficult, seek urgent medical care
Skin Contact: Flush exposed areas with generous amounts of water, remove contaminated clothing, wash with soap and water, seek medical advice if irritation persists
Eye Contact: Rinse carefully with water for at least 15 minutes, seek specialist eye care
Ingestion: Methyl nitrite vapor is primary risk, ingestion unlikely, act on symptoms as inhalation, do not induce vomiting, get medical help
Notes for Medical Personnel: Provide supportive treatment, monitor for methemoglobinemia, consider administering oxygen and agents like methylene blue for toxic effects
Extinguishing Media: Carbon dioxide, dry chemical, foam; avoid water jet as it can spread fire
Hazards from Combustion: Burns with an almost invisible flame, produces toxic gases like nitrogen oxides and carbon monoxide, explosion risk on heating
Protective Equipment: Use full protective gear, including self-contained breathing apparatus, evacuate non-essential personnel, stay upwind
Special Procedures: Shut off gas flow if safe, cool exposed containers with water spray to prevent rupture, do not enter fire area without correct equipment
Personal Precautions: Evacuate area, ventilate space, avoid inhalation of vapor, wear chemical-resistant gloves, goggles, and respirator
Environmental Precautions: Prevent leakage into drains, stormwater, or soils, notify authorities for large spills
Containment: Stop leak if without risk, ventilate area, remove ignition sources
Cleanup: Use non-sparking tools, adsorb in suitable material (soil, sand), collect for safe disposal in compliance with regulations
Handling: Use in a fume hood or well-ventilated area, avoid inhalation or contact with skin and eyes, ground all equipment to prevent static discharge, do not smoke or use flames nearby
Storage: Store in tightly closed, labeled cylinders or containers, keep in a cool, dry, secure space away from ignition sources, incompatible with oxidizing agents and acids, limit quantity stored, ensure good ventilation
Specific Uses: Only for research, laboratory, or controlled industrial setups by trained professionals
Engineering Controls: Use exhaustion hoods, spark-proof ventilation, explosion-proof electrical systems, monitor methyl nitrite vapor concentrations
Personal Protection: Chemical splash goggles, flame-resistant lab coat, suitable engineering gloves (nitrile, neoprene), fitted respirators when exceeding vapor limits
Occupational Limits: No specific legal threshold; always minimize exposure
Hygiene Measures: Wash thoroughly after handling, keep work garments separate, do not eat or drink in handling areas
Appearance: Colorless gas under standard conditions, with a pleasant, somewhat fruity odor
Molecular Weight: 61.04 g/mol
Boiling Point: -12 °C (10.4 °F)
Melting Point: -90 °C (-130 °F)
Vapor Pressure: High, makes room temperature storage difficult
Solubility: Slightly soluble in water, miscible with organic solvents
Flash Point: Extremely low, ignites easily
Auto-ignition Temperature: Data varies, but significantly below common ignition sources
Density: Slightly heavier than air (vapor may accumulate in low-lying areas)
Chemical Stability: Unstable as a compressed gas, decomposes over time especially when heated
Reactivity: Strong oxidizer, rapidly reacts with reducing agents, acids, and organic materials
Hazardous Reactions: Polymerization unlikely but decomposition produces toxic gases, heat, possible explosion with air
Incompatible Materials: Oxidizing or reducing agents, acids, bases, combustibles, ignition sources
Decomposition Products: Nitric oxide, nitrogen dioxide, carbon monoxide, methanol
Acute Toxicity: Inhalation causes methemoglobinemia, headache, dizziness, nausea, unconsciousness, possibly fatal respiratory collapse
Skin and Eye Contact: Irritation, redness, possible chemical burns at high concentrations
Chronic Effects: Prolonged or repeated exposure can damage blood, liver, kidneys
Routes of Exposure: Inhalation is primary risk; skin and eye contact secondary
Carcinogenicity: No current information linking methyl nitrite to cancer in humans
Sensitization: No reliable evidence of sensitization
Aquatic Toxicity: Toxic to aquatic life in high concentrations, repeated small releases harmful
Persistence and Degradability: Volatilizes rapidly, undergoes atmospheric photodegradation, breaks down to nitrogen oxides and methanol
Bioaccumulation Potential: Unlikely to accumulate in organisms due to high volatility
Soil Mobility: Fast vaporization, risk of contaminating groundwater if large spill
Other Effects: Breaks down ozone, contributes to smog in heavily polluted atmospheres
Waste Methods: Do not discharge to drains, environment, or sewers; collect with non-sparking tools and adsorbents, seal in appropriate hazardous waste cylinders, follow institutional and governmental hazardous waste disposal regulations
Container Handling: Empty residual gas before disposing, never reuse containers, turn in to properly permitted chemical disposal companies
Local Regulations: Hazardous waste code for organonitrogen compounds applies, involve environmental health and safety authorities on-site for best years-of-experience practice
UN Number: UN 1061
Shipping Name: Methyl nitrite, compressed
Hazard Class: 2.1 (Flammable Gas), subsidiary risk: Toxicity
Packing Group: Not assigned for gases, specialty containers required
Labeling Requirements: Flammable gas, toxic gas
Special Precautions: Prohibit on passenger aircraft, tightly regulate for ground and sea transport, inspect cylinders before and after transport
Regulatory Listings: Listed on major chemical inventories: TSCA (USA), REACH (EU), EINECS (EU), DSL (Canada)
OSHA Classification: Flammable gas, highly hazardous chemical
SARA Title III (USA): Reportable quantity may apply as extremely hazardous substance
Label Elements: Signal word "Danger," internationally recognized hazard symbols
Other Controls: Restricted use for professional handlers, strictly regulated in many regions, local workplace safety rules dictate extra requirements, frequent review by chemical hygiene officers recommended for all storage and usage areas
