Product Name: Tert-Butyl Methacrylate
Synonyms: TBMA, t-Butyl methacrylate
Chemical Formula: C8H14O2
CAS Number: 2156-56-1
Manufacturer: [Insert Manufacturer Name, Address, Emergency Phone Number]
Recommended Use: Polymer synthesis, plastic production, chemical manufacturing
Restrictions on Use: Not for drug, food, or household use
Hazard Classification: Flammable liquid (Category 3), Skin Irritation (Category 2), Eye Irritation (Category 2A), Sensitization (Category 1)
Label Elements: Signal Word: Warning
Hazard Statements: Flammable liquid and vapor. Causes skin and eye irritation. May cause allergic skin reaction. Harmful if inhaled. May cause respiratory irritation.
Pictograms: Flame, Exclamation Mark
Other Hazards: Vapors may form explosive mixtures with air. Prolonged exposure can affect the central nervous system.
Chemical Name: Tert-Butyl Methacrylate
Concentration: ≥98%
CAS Number: 2156-56-1
Impurities and Stabilizing Additives: May include small amounts of inhibitors (e.g., methoxy hydroquinone) to prevent polymerization during storage and transport
Inhalation: Move person to fresh air, keep comfortable, and get medical attention for symptoms such as shortness of breath, headache, or dizziness.
Skin Contact: Remove contaminated clothing, rinse skin with water and soap for at least fifteen minutes, and seek medical evaluation for persistent irritation or rash.
Eye Contact: Flush eyes with water for at least fifteen minutes, lifting eyelids as needed, and consult a doctor, especially if discomfort or redness does not pass.
Ingestion: Do not induce vomiting; rinse mouth thoroughly, drink small amounts of water if conscious, and get emergency help.
Symptoms Delayed: Potential for allergic response, rash, or respiratory distress, so observe over time after acute exposure.
Suitable Extinguishing Media: Use carbon dioxide, foam, or dry chemical. Water spray may be used to cool fire-exposed containers.
Unsuitable Media: Strong water jets can spread product.
Specific Hazards: Combustion can generate toxic gases, including carbon oxides and possibly irritating fumes.
Protective Equipment: Firefighters need self-contained breathing apparatus and full protective gear.
Firefighting Instructions: Keep containers cool by spraying water. Stay upwind to avoid inhaling vapors. Remove flammable material from vicinity.
Personal Precautions: Evacuate area, ventilate surroundings, and limit access.
Protective Equipment: Wear gloves, goggles, protective clothing, and a respirator if ventilation is not adequate.
Spill Cleanup: Contain spill with non-combustible absorbents (sand, earth), scoop into suitable container, seal tightly.
Environmental Precautions: Prevent runoff to drains, surface waters, and soil.
Disposal: Use licensed waste disposal contractors for contaminated material and cleanup residues.
Handling: Work in well-ventilated areas, avoid inhaling mists or vapors, keep away from ignition sources, never eat or drink while handling, and wear personal protection.
Storage: Store in tightly sealed containers in cool, dry, and shaded spots. Avoid direct sunlight or heat sources that could cause pressure buildup or polymerization.
Storage Incompatibilities: Keep away from acids, oxidizers, and strong reducing agents. Separate from food and feed
Other Precautions: Regularly inspect containers for leaks.
Occupational Exposure Limits: No established OSHA PEL, but ACGIH recommends keeping exposure low due to irritation.
Engineering Controls: Use mechanical ventilation, exhaust hoods, or fume extraction to prevent vapor buildup.
Personal Protective Equipment: Gloves (nitrile, butyl rubber), chemical safety goggles, face shields, impervious protective clothing, and, in cases of insufficient ventilation, use a respiratory mask with organic vapor cartridge.
Hygiene Measures: Wash hands and face after handling. Remove and wash contaminated clothing before reuse.
Appearance: Colorless liquid
Odor: Pungent, similar to esters
Odor Threshold: Not established
pH: Not applicable
Melting Point/Freezing Point: -60°C
Boiling Point: 120°C
Flash Point: 42°C (108°F, closed cup)
Flammability: Flammable liquid
Vapor Pressure: Approximately 11 mmHg at 20°C
Vapor Density: 4.56 (air = 1)
Relative Density: 0.88 (water = 1)
Solubility: Slightly soluble in water, miscible with organic solvents
Partition Coefficient (n-octanol/water): 2.56
Auto-ignition Temperature: 375°C
Decomposition Temperature: Not specified
Viscosity: 0.93 mPa.s at 25°C
Chemical Stability: Stable when stored and handled properly, but can polymerize if exposed to heat, UV light, or absence of inhibitor.
Reactivity: Reacts with strong acids, alkalis, oxidizing and reducing agents.
Conditions to Avoid: Heat, open flames, sunlight, lack of inhibitor, contamination.
Hazardous Decomposition Products: Burning releases carbon monoxide, carbon dioxide, and possibly methyl acrylate fumes.
Polymerization Risk: Risk heightened by high temperature and contamination, releases lots of heat.
Acute Toxicity: LD50 (oral, rat) approximately 6,800 mg/kg. Vapors can cause headaches, dizziness, or nausea.
Skin Corrosion/Irritation: Causes skin irritation, may trigger rashes or allergic reactions in sensitive individuals.
Serious Eye Damage/Irritation: Irritating, can cause redness, discomfort, watering.
Respiratory or Skin Sensitization: Sensitizer, may induce allergic response after repeat contact.
Carcinogenicity: Not listed as carcinogen by IARC, NTP, or OSHA.
Other Health Effects: Prolonged exposure may affect the liver or central nervous system in animals. No definitive evidence for humans yet.
Ecotoxicity: Harmful to aquatic life with long-lasting effects; LC50 (fish, 96 hr): ~10-100 mg/L.
Persistence and Degradability: Not readily biodegradable under standard conditions.
Bioaccumulative Potential: Moderate, due to log Kow exceeding 2.
Mobility in Soil: Slight to moderate, risk of leaching to groundwater depends on release circumstances.
Other Adverse Effects: Product contains no known ozone depleters, but volatilization may affect local air quality.
Disposal Instructions: Dispose of unused or unwanted material as hazardous chemical waste, following local, national, and regional regulations.
Contaminated Packaging: Rinse and manage as hazardous waste; do not reuse empty barrels or containers for other substances.
Waste Treatment: Incinerate in certified facilities with appropriate air pollution controls to reduce environmental impact.
Precautions for Disposal: Do not pour into drains, soil, or water bodies.
UN Number: UN 1993
Proper Shipping Name: Flammable Liquid, N.O.S. (Tert-Butyl Methacrylate)
Transport Hazard Class: 3 (Flammable liquids)
Packing Group: III
Marine Pollutant: Yes
Special Precautions: Keep container upright and tightly closed during transport, ensure correct labeling, and avoid temperature extremes and mechanical shock.
OSHA: Considered hazardous under the OSHA Hazard Communication Standard.
TSCA: Listed in the United States Toxic Substances Control Act (TSCA) Inventory.
SARA Title III: Not a Section 302 EHS, but covered under SARA 311/312 for acute health, chronic health, and fire hazard categories.
California Proposition 65: Not listed as a chemical known to cause cancer or reproductive harm.
Other Regulations: Covered by country-specific chemical inventories (REACH, EINECS/ELINCS in Europe, DSL in Canada)
Labeling Requirements: Must carry proper hazard pictograms, signal words, and risk statements according to GHS and local law.
