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Chemical Name: Tert-Butyl Monoperoxymaleate
Common Uses: Intermediate in organic synthesis, crosslinking agent for polymers, specialty chemical manufacturing
Physical State: Colorless to pale yellow liquid, sharp odor
Concentration: Greater than 52% active ingredient
CAS Number: 4675-46-7
Main Risks: Strong oxidizing properties, can trigger fires even without direct flames, skin and eye irritant, possible respiratory hazards from vapors
Routes of Exposure: Inhalation, skin contact, eye contact, accidental ingestion
Critical Hazards: Heat, friction, impact, or contamination by incompatible materials can lead to explosive decomposition
Pictograms: Flammable, oxidizing, acute toxicity, corrosive, health hazard
Main Component: Tert-Butyl Monoperoxymaleate over 52%
Impurities: Remainder comprised of stabilizers (often phthalates), trace organic solvents as process remnants
Incompatible Materials: Strong acids, bases, reducing agents, certain metals
Inhalation: Move affected person into fresh air fast, monitor breathing, seek medical help if symptoms develop
Skin Contact: Remove contaminated clothing, wash skin with copious water and soap, avoid scrubbing which can damage tissue
Eye Contact: Rinse open eyes carefully for at least 15 minutes, keep eyelids apart, seek medical attention immediately
Ingestion: Do not induce vomiting, rinse mouth with water, immediate hospital treatment advised since corrosive injury to tissues is possible
Suitable Extinguishing Media: Large volumes of water, do not use dry chemical extinguishers
Hazards in a Fire: Fast decomposition can release toxic fumes including carbon monoxide, carbon dioxide, organic acids
Protective Equipment: Firefighters need full protective suits with SCBA, approach upwind, keep containers cooled with water spray
Specific Strategies: Remove unaffected containers from danger zone if possible, watch for re-ignition due to oxidizer effect
Personal Protection: Use face shield, chemical-resistant gloves, splash goggles, full protective suit
Spill Control: Evacuate area, ventilate, eliminate all sources of heat and ignition around spill
Cleanup: Absorb spillage with vermiculite, sand, or other non-combustible absorbent, transfer using non-sparking tools to labeled waste containers
Environmental Precautions: Prevent runoff to surface waters, avoid release to drains, report large spills to authorities in accordance with local rules
Safe Handling: Avoid direct contact, work with chemical fume hood or good general ventilation, never open containers near ignition sources
Storage Requirements: Store at low temperature (preferably below 25°C), keep in tightly closed original containers, store away from light and incompatible chemicals
Engineering Controls: Segregate from acids, bases, reducing agents, combustibles, and foodstuffs
Workplace Controls: Closed handling systems, local exhaust, explosion-proof ventilation recommended
Personal Protection: Approved organic vapor/acid gas respirators if vapor exposure possible, chemical-splash proof goggles, face shield, butyl or nitrile gloves, impermeable apron, eye wash and emergency shower nearby
Limits: No formal occupational exposure limits established by OSHA or ACGIH, but minimize exposure as best practice for peroxides
Good Practice: Remove soiled clothing, never eat or drink where the chemical is handled, regular training
Appearance: Clear to yellow-tinged liquid
Odor: Sharp, slightly acrid
Boiling Point: Not very high due to decomposition risk
Melting Point: Below room temperature
Solubility: Limited in water, good in organic solvents
Decomposition Temperature: Can break down with enough heat, releasing gas and possibly causing pressure build-up
Chemical Stability: Stable only under recommended storage conditions, sensitive to heat, shock, contamination
Reactive Materials: Reacts violently with acids, bases, reducing agents, certain metals (iron, copper)
Decomposition Products: Unstable materials decompose to form gases that can be irritant or toxic
Key Hazard: Danger of explosion from self-accelerating decomposition if allowed to heat up or mix with incompatible materials
Acute Effects: Strong eye and skin irritation, inhalation may cause sore throat, cough, headache; ingestion leads to mouth, throat, and stomach burns
Long-Term Exposure: Chronic skin exposure could cause dermatitis, repeated inhalation increases risk of respiratory issues
Carcinogenicity: Not classified as carcinogenic by IARC, but organic peroxides require care due to potential mutagenicity in related compounds
People Most at Risk: Workers in chemical processing, users with high exposure, individuals with reactive airway diseases
Aquatic Impact: Toxic to aquatic life, chance of damage is higher in poorly diluted spills
Persistence: Breaks down relatively quickly in environment but byproducts may remain
Bioaccumulation: Not expected to bioaccumulate significantly, but proper spill control is essential
Disposal Advice: Never dump in drains or water courses, attention required to prevent long-term local contamination
Waste Treatment: Contact licensed hazardous waste facility, never landfill untreated material
Handling Empty Containers: Remains hazardous, rinse thoroughly, keep closed
Local Rules: Disposal methods should follow authoritative regulations, always consult environmental authorities for up-to-date methods
Recycling: Not suitable for recycling due to oxidizer content and stubborn residues
Transport Hazards: Label as strong oxidizer, UN number specific for organic peroxides
Packing: Must be in containers tested for peroxide stability, often includes secondary containment
Special Instructions: Temperature-controlled vehicles preferred, keep away from food and other chemicals, notify carriers of hazard class
Spill Procedures during Transport: Isolate area, utilize compatible absorbents, avoid returning spilled peroxide to original containers
Classification: Regulated under national and international chemical safety laws as hazardous oxidizer
Labeling Requirements: Prominent hazard warnings, safety pictograms, detailed risk and safety phrases based on concentration and use
Compliance: Must meet strict regional transport and workplace handling rules, subject to routine inspection in production and shipping
Training: All handlers need verified safety training and emergency response procedures on hand
