Product Name: Bis(4-tert-butylphenyl)iodonium nonafluorobutane-1-sulfonate
Chemical Formula: C22H28F9IO3S
Synonyms: (4-tert-Butylphenyl)phenyliodonium perfluorobutanesulfonate
CAS Number: 125051-32-3
Recommended Use: Photoinitiator for UV curing, electronics manufacturing, adhesives
Manufacturer Contact: Safety officer and emergency contact provided by supplier
Emergency Telephone: Listed on packaging and supplier’s official site for direct access during spills or exposures
GHS Classification: Acute Toxicity (Oral, Category 4), Skin Irritation (Category 2), Serious Eye Damage (Category 1), Specific Target Organ Toxicity – Single Exposure (Category 3)
Signal Word: Danger
Hazard Statements: Harmful if swallowed; Causes skin irritation; Causes serious eye damage; May cause respiratory irritation
Pictograms: Exclamation mark, corrosive
Precautionary Statements: Avoid contact with eyes, skin, clothing; Use recommended personal protective equipment; Ensure adequate ventilation
Chemical: Bis(4-tert-butylphenyl)iodonium nonafluorobutane-1-sulfonate
CAS Number: 125051-32-3
Purity: More than 95% by weight
Impurities/Other Components: Trace phenol derivatives, iodine compounds possible in fractions under detection level
Mixture: Not a mixture; single chemical substance formulation
General Advice: Move to fresh air quickly, avoid further exposure; Remove contaminated clothing and wash skin thoroughly
If Inhaled: Transfer person to fresh air; Seek medical attention if respiratory symptoms persist
In Case of Skin Contact: Wash thoroughly with soap and plenty of water for at least 15 minutes; Remove contaminated clothing; If irritation persists, see medical professional
In Case of Eye Contact: Rinse with plenty of water for several minutes, lifting upper and lower eyelids occasionally; Remove contact lenses if present and easy; Seek medical care immediately
If Swallowed: Rinse mouth, do not induce vomiting; Give small amount of water if conscious; Immediate medical attention is necessary
Suitable Extinguishing Media: Water spray, alcohol-resistant foam, dry chemical powder, carbon dioxide
Unsuitable Extinguishing Media: High velocity water jets
Hazards from Combustion Products: Releases carbon oxides, iodine compounds, sulfur oxides, hydrogen fluoride, toxic vapors under fire conditions
Protective Equipment: Firefighters use self-contained breathing apparatus and full protective clothing; Approach upwind
Special Procedures: Use water spray to cool exposed surfaces, prevent spreading by containing run-off
Personal Precautions: Wear necessary PPE, including gloves, goggles, respirator; Avoid breathing dusts and vapors
Environmental Precautions: Prevent further leakage or spillage if safe; Keep out of drains, surface waters, and soil
Cleanup Methods: Collect dry material by mechanical means; Sweep up without generating dust; Place in a labeled container for disposal; Ventilate area
Decontamination: Wash area with plenty of water and detergent after collection; Dispose of washings in compliance with regulations
Handling: Use only with appropriate ventilation and safety measures; Avoid formation of dusts and aerosols; Do not eat, drink, or smoke while using
Hygiene: Wash hands and exposed skin after handling; Remove contaminated clothing before entering eating areas
Storage: Keep tightly sealed in original packaging; Store in cool, dry, well-ventilated area away from sunlight, heat sources, oxidizers, and moisture
Segregation: Do not store near food, beverages, or incompatible chemicals such as strong acids and bases; Maintain secondary containment
Engineering Controls: Use local exhaust ventilation and process enclosures to minimize airborne concentrations; Maintain eyewash stations and emergency showers
Respiratory Protection: Use approved respirator with P2 or P3 filters for dusts and mists; In confined areas, use supplied-air systems
Hand Protection: Choose impervious gloves (nitrile or butyl rubber recommended); Inspect regularly for signs of degradation
Eye/Face Protection: Use chemical splash goggles and face shield where risk of exposure exists
Skin/Body Protection: Wear full protective clothing such as lab coats, aprons, long sleeves; Closed footwear required
Environmental Controls: Prevent emissions into air, soil, and water; Maintain closed systems or use containment where possible
Appearance: Off-white to pale yellow powder, mix may exhibit faint odor
Odor: Mild, not significant under normal conditions
Odor Threshold: Not available
pH: Data not available, expected acidic in aqueous solution
Melting Point/Freezing Point: Wide range, typically above 100°C
Boiling Point/Range: Decomposition before boiling
Flash Point: Not applicable (solid), may decompose before ignition
Evaporation Rate: Not applicable (solid)
Flammability: Not flammable in powder form
Upper/Lower Flammability or Explosive Limits: Not available
Vapor Pressure: Negligible at room temperature
Vapor Density: Not applicable
Relative Density: About 1.5–1.7 g/cm³
Solubility: Readily soluble in most polar organic solvents (acetonitrile, acetone); low water solubility
Partition Coefficient: Not specified
Auto-Ignition Temperature: Not available
Decomposition Temperature: Decomposes above 200°C
Viscosity: Not applicable
Chemical Stability: Remains stable under standard temperature and handling protocols; Avoid sources of heat, light, humidity
Possibility of Hazardous Reactions: May generate toxic gases on decomposition, including iodine and perfluorinated fragments
Conditions to Avoid: Strong oxidizing or reducing atmospheres, direct sunlight, elevated temperatures
Incompatible Materials: Strong bases, strong acids, reductants, reactive metals
Hazardous Decomposition Products: Hydrogen fluoride, iodine compounds, sulfur oxides, carbon monoxide
Acute Toxicity (Oral, Dermal): Harmful if swallowed; exact LD50 not established, potential for gastrointestinal pain, headache, dizziness
Inhalation: Irritation to respiratory tract, cough, and shortness of breath may result
Skin Corrosion/Irritation: May cause redness, dryness, discomfort, possible chemical burns with extended exposure
Eye Damage/Irritation: Causes serious irritation or burns; risk of permanent injury if not treated aggressively
Sensitization: Not expected under normal use but possible in those with previous chemical sensitivities
Chronic Effects: No comprehensive animal studies; repeated contact may lead to dermatitis
Mutagenicity/Carcinogenicity: Not classified as mutagenic, carcinogenic, or toxic for reproduction by leading authorities; absence of extensive long-term studies noted
Environmental Toxicity: Persistently toxic to aquatic life; low biodegradability due to fluorinated structure
Aquatic Toxicity: May cause long-term adverse effects in aquatic environments; avoid discharge into waterways
Bioaccumulative Potential: Limited data, but perfluorinated segments may accumulate in aquatic organisms
Mobility in Soil: Expected to have low absorption and leach through soils in presence of water
Other Adverse Effects: Potential to disrupt normal microbial activity in exposed soils
Disposal Methods: Dispose of contents and container in accordance with local, regional, and national regulations; Incineration in a licensed chemical waste facility recommended
Waste Codes: Not assigned a specific RCRA waste code; handle as hazardous chemical waste
Packaging Disposal: Containers must be triple-rinsed before recycling or disposal; manage as hazardous waste unless decontaminated
Sewer Disposal: Do not discharge to wastewater systems; chemical persistence and toxicity risk are high
UN Number: Not defined under UN listings for transport, check national regulations
Shipping Name: Organoiodine Compounds, Not Otherwise Specified
Transport Hazard Class: 6.1 (Toxic substances, if considered under relevant transport regulation)
Packing Group: III
Marine Pollutant: Yes
Special Transport Precautions: Keep away from foodstuffs, segregate from incompatible materials during transit, ensure secure packaging
Regulatory Documentation: Ensure presence of updated safety data and emergency contact documentation during shipment
Labelling: Hazardous according to OSHA, EU REACH, and GHS guidelines
Inventory Status: Components may be listed or regulated under TSCA, REACH, DSL (Canada), other national inventories
Regulatory Restrictions: Restrictions in use within consumer products in several jurisdictions; check specific country and trade block for compliant handling
Worker Protection: Subject to national occupational safety standards, including use of PPE and environmental emission controls
Other Regulations: Compliance with environmental reporting, transport restriction, and chemical safety reporting laws required
