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Name: 2-Methyl-2-Butanethiol
Chemical Formula: C5H12S
Synonyms: tert-Amyl mercaptan, 2-Methyl t-butyl mercaptan
CAS Number: 75-66-1
Physical Hazards: Easily ignites, produces flammable vapors, risk of explosive mixtures with air
Health Hazards: Strong, pungent smell causes headaches, eye and respiratory irritation, risk of dizziness or nausea after exposure to concentrated vapors
Environmental Hazards: Harmful to aquatic life from accidental release to water systems
GHS Label Elements: Flammable liquid, acute toxicity (inhalation, oral), specific target organ toxicity (single exposure)
Chemical Name: 2-Methyl-2-Butanethiol
Purity: Typically found in high concentrations above 95% for research or industrial use
Impurities: Trace organic sulfur byproducts from synthesis
Inhalation: Move affected people to fresh air, keep them warm and at rest, monitor breathing, and get medical help for shortness of breath or persistent symptoms
Skin Contact: Remove contaminated clothing, wash skin with soap and water
Eye Contact: Rinse immediately with plenty of clean water, holding eyelids open
Ingestion: Do not induce vomiting, rinse mouth and seek prompt medical attention
Extinguishing Media: Use foam, dry chemical powder, or carbon dioxide; water spray cools surfaces but can spread spills
Specific Hazards: Vapors travel to sources of ignition, combustion produces toxic sulfur oxides
Protective Equipment: Chemical-resistant clothing, self-contained breathing apparatus, work upwind if possible
Personal Precautions: Ventilate area well, block off sources of ignition, avoid breathing vapors
Environmental Precautions: Prevent from entering drains, waterways, or soil
Cleanup: Absorb spill with inert material, place in chemical waste disposal container, wash spill area thoroughly after removal
Handling: Work in fume hoods or well-ventilated spaces, keep containers tightly closed, use nonsparking tools
Storage: Store in cool, dry, well-ventilated areas away from heat, sparks, or flame, segregate from oxidizers, acids, and strong bases, use containers approved for flammable chemicals
Engineering Controls: Mechanical exhausts or local ventilation keeps vapor levels low, explosion-proof electrical systems in work areas
Personal Protective Equipment: Chemical splash goggles, gloves impervious to solvents, flame-resistant lab coats or coveralls
Respiratory Protection: Use respirators with organic vapor cartridges if exposure levels exceed safe limits or during spills
Appearance: Colorless to pale yellow liquid with strong, persistent odor
Odor Threshold: Noticeable at extremely low concentrations
Boiling Point: About 94°C
Melting Point: Roughly -120°C
Flash Point: Low, increasing fire danger
Solubility: Slightly soluble in water, mixes well with common organic solvents
Stability: Stable under recommended storage and handling, sensitive to air and light over time
Reactive With: Strong oxidizers, acids, alkali metals, peroxides
Hazardous Decomposition: Combustion generates toxic gases like sulfur dioxide, possible formation of flammable peroxides with prolonged air exposure
Acute Effects: Causes respiratory irritation, skin contact sometimes leads to burns or rashes, ingestion irritates digestive system
Chronic Exposure: Long-term contact has potential for central nervous system symptoms, repeated exposures increase risk of headaches, fatigue, and possible liver impact
Sensitization: Rare occurrence, but some cases of allergic-type skin reactions reported in frequent handlers
LD50/LC50: Moderate toxicity based on animal studies, low threshold for sensory irritation
Aquatic Toxicity: Short-term exposure can affect aquatic organisms, does not readily break down in water
Persistence: Degrades slowly, risk of bioaccumulation in sediments
Soil Mobility: Volatilizes rapidly from surface, but spills can soak into porous materials and contaminate groundwater
Waste Handling: Collect hazardous waste in labeled flammable liquids containers, follow local regulations for sulfurous organic waste
Treatment: Incineration in approved facilities recommended, do not release to environment or ordinary landfill
Container Disposal: Triple rinse and puncture empty containers before recycling or disposal as hazardous
UN Number: Assigned for flammable liquids
Class: Flammable liquid
Packing Group: Categorized for severe fire hazard
Transport Precautions: Ship in approved containers, label and segregate from incompatible cargo, keep away from food or feed
OSHA: Classified as hazardous chemical at workplace for flammability and toxicity
EPA: Controls for accidental releases into the environment
State Regulations: Individual states list air and water emissions thresholds specific to sulfur compounds
International Transport: Restrictions under IATA and IMDG due to strong odor and fire risk during shipping
