MSDS for Ethyl Phenyl(2,4,6-trimethylbenzoyl)phosphinate

Identification

Product Name: Ethyl Phenyl(2,4,6-trimethylbenzoyl)phosphinate
Chemical Formula: C18H21O2P
Synonyms: TPO-L, Photoinitiator TPO-L
Recommended Use: Industrial use for UV-curable inks, coatings, adhesives
Manufacturer: Supplier contact details can be obtained from the purchase source
Emergency Telephone: Local poison control or national emergency number
CAS Number: 84434-11-7

Hazard Identification

GHS Classification: Eye irritation (Category 2A), Skin sensitization (Category 1)
Hazard Statements: Causes serious eye irritation, May cause an allergic skin reaction
Signal Word: Warning
Pictograms: Exclamation mark
Potential Health Effects: Eye, skin, and respiratory tract irritation possible; allergic skin response; not known to cause mutagenic or carcinogenic effects under normal use conditions
Environmental Hazards: Can be harmful to aquatic life with long lasting effects

Composition / Information on Ingredients

Chemical Identity: Ethyl Phenyl(2,4,6-trimethylbenzoyl)phosphinate
Chemical Formula: C18H21O2P
Concentration: 95–100%
Impurities: Low level (<5%) unidentified impurities
Other Ingredients: None declared

First Aid Measures

General Advice: Remove contaminated clothing. Get medical attention if any irritation persists.
Inhalation: Move to fresh air. Seek medical attention if symptoms develop.
Skin Contact: Wash thoroughly with soap and water. Seek medical attention if skin irritation or rash occurs.
Eye Contact: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do; continue rinsing. Immediate medical attention is recommended for persistent irritation.
Ingestion: Rinse mouth thoroughly. Do not induce vomiting. Seek medical advice.

Fire-Fighting Measures

Suitable Extinguishing Media: Water spray, carbon dioxide, dry chemical powder, foam
Specific Hazards: Combustion releases irritating vapors, including phosphorus oxides and carbon monoxide
Protective Equipment: Firefighters should use self-contained breathing apparatus and protective clothing
Special Procedures: Move containers from fire area if possible; use water spray to cool exposed containers
Hazardous Combustion Products: Oxides of phosphorus, carbon oxides, hydrocarbons

Accidental Release Measures

Personal Precautions: Use personal protective equipment, including gloves, goggles, and protective clothing
Environmental Precautions: Prevent entry into drains, watercourses, and soil
Methods for Clean-Up: Absorb with inert material such as sand; collect and dispose of in suitable containers; ventilate area
Spill Area Ventilation: Provide fresh air to affected area
Disposal: Follow local, regional, and national regulations for hazardous waste

Handling and Storage

Handling: Avoid contact with eyes, skin, and clothing. Use in areas with adequate ventilation. Wear suitable personal protective equipment. Wash hands before breaks and after working with product.
Storage: Store tightly sealed in a cool, dry, and well-ventilated area, away from heat and direct sunlight. Avoid sources of ignition and incompatible materials, such as strong oxidizers and acids.
Incompatible Materials: Strong oxidizing agents, strong acids, bases

Exposure Controls and Personal Protection

Engineering Controls: Adequate general or local exhaust ventilation recommended to minimize exposure
Personal Protective Equipment: Chemical-resistant gloves (nitrile or latex), safety goggles, protective clothing
Respiratory Protection: Use respirator approved for organic vapors if ventilation is not sufficient
Hygiene Measures: Remove contaminated clothing; wash hands and skin thoroughly
Environmental Controls: Procedures to prevent escape into the environment

Physical and Chemical Properties

Appearance: Pale yellow or colorless liquid
Odor: Faint, characteristic
Boiling Point: 196–199°C (estimated)
Melting Point: Not applicable (liquid at room temperature)
Flash Point: ~180°C
Solubility in Water: Insoluble
Solubility in Other Solvents: Good solubility in organic solvents such as acetone, ethyl acetate
Vapor Pressure: Low
Density: ~1.10 g/cm³ at 20°C
pH: Not applicable
Auto-ignition Temperature: Not determined
Partition Coefficient (Log Kow): Not determined

Stability and Reactivity

Chemical Stability: Stable under normal handling, usage, and storage conditions
Possibility of Hazardous Reactions: No dangerous reactions known under recommended handling
Conditions to Avoid: Excessive heat, light exposure, direct sunlight, and prolonged or repeated contact with incompatibles
Incompatible Materials: Strong oxidizers, strong acids and bases
Hazardous Decomposition Products: Phosphorus oxides, carbon oxides

Toxicological Information

Routes of Exposure: Skin and eye contact, inhalation, ingestion
Acute Toxicity: Low acute oral and dermal toxicity expected at typical occupational exposures
Irritation: Can cause moderate to severe eye irritation. May cause skin irritation, especially with prolonged exposure.
Sensitization: Can produce allergic responses after repeated skin exposure
Carcinogenicity: No evidence supporting carcinogenic, mutagenic, or reproductive toxicity under typical use
Other Effects: Headache, nausea, respiratory tract discomfort if inhaled in higher concentrations

Ecological Information

Ecotoxicity: Harmful to aquatic organisms; may cause long-term adverse effects in the aquatic environment
Persistence and Degradability: Not readily biodegradable
Bioaccumulative Potential: Potential for bioaccumulation should not be overlooked
Mobility in Soil: Not mobile due to low solubility in water
Other Adverse Effects: Spills or uncontrolled releases can pollute waterways and threaten wildlife

Disposal Considerations

Waste Treatment Methods: Dispose of through licensed waste disposal contractor
Product Disposal: Incinerate in approved facility or dispose of according to local, state, and federal regulations
Packaging Disposal: Contaminated containers are hazardous waste; handle as such
Precautions: Do not discharge into drains or the environment; avoid contamination of water sources

Transport Information

UN Number: Not regulated for transportation under UN, IATA, IMO
Proper Shipping Name: Not classified as dangerous goods for transport
Transport Hazard Class: None
Packing Group: None
Environmental Hazards: Avoid spills during loading or unloading, especially near water bodies
Special Precautions: Protect containers against physical damage; keep away from oxidizing agents and strong acids
Labeling: No special labeling required for transport under current regulations

Regulatory Information

Global Inventories: Listed on EU EINECS, US TSCA, Canadian DSL/NDSL, Japan ENCS, Korea KECI
OSHA Hazard: Classified as hazardous based on eye irritation and skin sensitization
EPA Regulations: Subject to SARA Title III reporting for workplace hazards
Workplace Labeling: Label with hazard pictograms and precautionary statements
National Inventory Status: Contact supplier for region-specific information
Other Regulations: Subject to REACH registration and restriction in the EU for specific end uses