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Product Name: Tert-Butyl Peroxybutyl Fumarate, Type A Diluent
Product Use: Industrial initiator, used in polymerization and curing applications
Manufacturer Information: Company name, address, emergency phone number, and contact email
CAS Number: 1068-27-5
Synonyms: t-Butyl peroxybutyl fumarate, TBPBF
Chemical Formula: C12H20O6
UN Number: UN3106 for organic peroxide type D, liquid
Recommended Restrictions: Professional use only, not for consumer use, avoid unauthorized personnel
Date of MSDS Preparation: Month, year provided by supplier
Classification: Organic peroxide Type D, oxidizing, flammable liquid, acute toxicity, eye and skin irritant
Signal Word: Danger
Hazard Statements: Heating may cause fire or explosion, may cause skin and eye irritation, harmful if inhaled or swallowed, strong oxidizer, may react violently with incompatible materials, possible harm to aquatic environments
Pictograms: Flame, exclamation mark, environment
Precautionary Statements: Keep away from heat or ignition sources, wear protective gear, wash thoroughly after handling, avoid breathing vapors, keep out of water and drains, use non-sparking tools, ground containers during transfer
Hazard Routes: Inhalation, skin contact, eye contact, ingestion
Target Organs: Respiratory system, skin, eyes
Main Component: Tert-butyl peroxybutyl fumarate (≤52%)
Diluent: Type A inert hydrocarbon diluent (≥48%)
Impurities/Additives: None expected above cut-off concentrations
CAS Number (Active Ingredient): 1068-27-5
CAS Number (Diluent): Provided according to supplier
Other Ingredients: Minor stabilizers or impurities present below 1% threshold
Inhalation: Move person to fresh air, keep at rest, seek medical attention for persistent symptoms such as cough, headache, dizziness or breathing difficulties
Skin Contact: Remove contaminated clothing, flush affected skin immediately with plenty of water and gentle soap, seek medical advice for skin irritation or burns
Eye Contact: Rinse carefully with water for at least 15 minutes, hold eyelids open, remove contact lenses if present and easy, get prompt medical attention
Ingestion: Rinse mouth with water, do not induce vomiting, never give anything by mouth to an unconscious person, seek immediate medical help
Most Important Symptoms: Burning sensation, irritation, redness, pain, difficulty breathing in severe exposures
Notes to Physician: Treat symptomatically, consider delayed pulmonary edema, monitor for chemical pneumonia after ingestion
Suitable Extinguishing Media: Dry chemical powder, carbon dioxide, foam, sand
Unsuitable Extinguishing Media: Water stream may spread the fire
Fire Hazards: Heat or shock may result in violent decomposition, intense heat and pressure build-up can cause explosions, decomposition releases irritating fumes including carbon oxides
Protective Equipment: Self-contained breathing apparatus, full protective clothing
Firefighting Instructions: Evacuate area, cool containers with flooding quantities of water until well after fire is out, approach from upwind, avoid inhaling fumes
Special Procedures: Remove containers from fire area if safe, prevent runoff from entering water sources or drains
Personal Precautions: Evacuate non-essential personnel, ventilate area, eliminate sources of ignition, use non-sparking tools
Protective Equipment: Chemical-resistant gloves, goggles or face shield, flame retardant clothing, suitable respirator
Environmental Precautions: Prevent spillage from entering drains, surface waters, or soil, notify authorities as required
Containment: Stop leak if safe, dike area with inert absorbent material (sand, vermiculite), do not use combustible materials
Spill Cleanup: Collect material in suitable non-metallic container for disposal, wash area with water after cleanup, ventilate space
Handling: Avoid contact with skin, eyes, clothing; prevent ingestion and inhalation of vapors; never handle near heat, sparks, or flame; use in well-ventilated work areas; ground/bond containers and equipment; keep product tightly closed; practice good hygiene
Storage: Store in original containers in a cool, well-ventilated, dry, and fire-resistant location away from direct sunlight, strong acids or alkalies, reducing agents, or sources of ignition; maintain temperature below 30°C; separate from incompatible substances; avoid storage near food, drinks, or animal feed
Storage Life: Use before expiration date; regular inspection of storage facilities recommended
Incompatible Materials: Strong acids, bases, combustibles, reducing agents, heavy metal compounds
Exposure Limits: No established exposure limits for this specific substance; observe controls for other peroxides and solvents
Engineering Controls: Use with local exhaust ventilation, safety showers, eyewash stations in vicinity
Personal Protective Equipment: Chemical-resistant gloves (nitrile, neoprene), safety goggles or full face shield, impervious clothing, flame-retardant coveralls, rubber boots as needed
Respiratory Protection: Use air-purifying respirators with organic vapor cartridges if ventilation insufficient or during spill situations
Hygiene Measures: Wash hands and exposed skin thoroughly before eating, drinking, smoking, or using restroom
Appearance: Clear to pale yellow liquid, oily consistency
Odor: Slight, faintly sweet aromatic
Odor Threshold: Not established
pH: Not applicable
Melting/Freezing Point: Not determined
Boiling Point/Range: Decomposes before boiling
Flash Point: Approx. 68°C (closed cup, measured value can vary by formulation)
Evaporation Rate: Not established
Flammability: Flammable liquid and vapor
Explosive Limits: No data available
Vapor Pressure: Low at ambient temperature
Vapor Density: Heavier than air
Relative Density: Approx. 0.95 g/cm³
Solubility: Insoluble in water; soluble in solvents such as hydrocarbons and esters
Partition Coefficient n-octanol/water: Not measured
Auto-ignition Temperature: Data not available
Decomposition Temperature: Can decompose at temperatures above 60°C with vigorous exothermic reaction
Viscosity: Liquid; value depends on diluent proportion
Chemical Stability: Stable at recommended storage temperatures, sensitive to heat, shock, friction, contamination
Possibility of Hazardous Reactions: Rapid, uncontrolled decomposition possible at elevated temperature, may cause fire or explosion
Incompatible Materials: Strong acids, bases, reducing agents, heavy metals, combustible substances, strong oxidizers
Conditions to Avoid: Heat, open flames, sparks, sunlight, contamination, mechanical shock
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, organic fumes, aldehydes
Routes of Entry: Inhalation, skin and eye contact, ingestion
Acute Toxicity (Oral): Harmful if swallowed; LD50 estimates for similar organic peroxides range 500-2000 mg/kg (rat)
Acute Toxicity (Dermal): No quantitative data; based on analogs, may produce skin burns or irritation
Inhalation Toxicity: May be harmful or irritating to respiratory tract; vapors and mists aggravate pre-existing lung or skin conditions
Skin Corrosion/Irritation: Causes skin irritation; redness, swelling, prolonged or repeated contact increases risk
Eye Damage/Irritation: Causes severe eye irritation, possible burns, tearing, pain
Respiratory Sensitization: Not classified but may cause asthma-like symptoms after repeated exposure
Chronic Effects: Prolonged skin exposure can cause dermatitis; limited studies on carcinogenicity or reproductive risk
Medical Conditions Aggravated: Asthma, skin disorders, eye conditions
Symptoms: Headache, nausea, dizziness, burning skin/eyes, coughing, sore throat
Aquatic Toxicity: Harmful to aquatic organisms, toxicity values based on similar peroxides show LC50 (fish, 96h): 1–10 mg/L
Persistence and Degradability: Partly biodegradable, but solvent and active ingredient may persist under some conditions
Bioaccumulative Potential: No data; ingredients less likely to bioaccumulate but diluent can persist in organisms
Mobility in Soil: Low to moderate depending on diluent; organic peroxides may adsorb in organic matter
Other Adverse Effects: Spills threaten waterways by oxygen depletion and aquatic stress
Waste Treatment Methods: Must be handled as a hazardous waste, incinerate using a facility authorized for organic peroxide destruction, avoid landfill
Disposal of Contaminated Packaging: Empty containers should be triple-rinsed and then disposed as hazardous material
Precautions: Do not allow into sewers, waterways, open soil, consult local environmental authorities
Special Considerations: Small amounts may be deactivated with reducing agents before disposal, observe local, regional, national regulations
UN Number: UN3106
Proper Shipping Name: Organic Peroxide Type D, Liquid (tert-Butyl Peroxybutyl Fumarate mixture)
Transport Hazard Class: 5.2 (Organic peroxide)
Packaging Group: II (medium hazard)
Labels Required: 5.2 (yellow organic peroxide label)
Marine Pollutant: Yes
Special Transport Precautions: Keep containers upright and securely fastened, segregate from acids and combustibles, temperature monitored shipping advised for bulk quantities
Emergency Response Code: ERG Guide 145
Reportable Quantity: See national legislation
OSHA Classification (US): Hazardous chemical, subject to OSHA Hazard Communication Standard
TSCA Status: All ingredients listed or exempt
SARA Title III: Subject to reporting requirements for hazardous substances
WHMIS (Canada): Class C: oxidizing material, Class B: flammable liquid, Class D: toxic material
REACH (Europe): Registered as a substance of concern, subject to restrictions
Other National Regulations: Listed as hazardous under various chemical control acts
Labeling Requirements: Pictograms, hazard and precautionary statements as per GHS, country-specific labeling
Environmental Regulations: Subject to restrictions regarding water, waste, and air emissions
