Product Name: Methyltriphenylphosphonium Iodide
Synonyms: Methyltriphenylphosphoniumiodide, MTPPI
Recommended Use: Laboratory chemical, synthesis intermediate
Manufacturer/Supplier: Commercial chemical suppliers, laboratory chemical providers
Contact Information: Emergency hotline phone numbers provided by supplier, customer service contact listed on product label
CAS Number: 2065-66-9
EC Number: 218-190-4
GHS Classification: Acute Toxicity (Oral), Eye Irritation, Skin Sensitization
Signal Word: Warning
Hazard Statements: Harmful if swallowed. Causes mild skin irritation. Causes serious eye irritation. May cause allergic skin reaction.
Pictogram(s): Exclamation mark symbol
Precautionary Statements: Avoid breathing dust. Wash hands after handling. Wear protective gloves and eye protection. If on skin: wash with plenty of water. If in eyes: rinse cautiously for several minutes.
Chemical Identity: Methyltriphenylphosphonium Iodide
Formula: C19H18IP
Molecular Weight: 404.23 g/mol
Concentration: >98% by weight
Impurities: Trace amounts of triphenylphosphine
Inhalation: Move person to fresh air. Seek medical attention if symptoms persist.
Skin Contact: Remove contaminated clothing. Wash affected area with soap and water. If irritation develops, consult a doctor.
Eye Contact: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing. Obtain medical attention if irritation persists.
Ingestion: Rinse mouth with water. Do not induce vomiting. Seek medical advice immediately.
Suitable Extinguishing Media: Use dry chemical, carbon dioxide, or foam. Water spray may be used to cool containers.
Specific Hazards: Emits toxic fumes (phosphorus oxides, iodides) when heated to decomposition. Avoid breathing vapors.
Protective Equipment: Firefighters use self-contained breathing apparatus and full protective gear.
Special Procedures: Prevent fire-fighting water from entering environment.
Personal Protection: Avoid contact with skin, eyes, and clothing. Wear gloves, safety goggles, suitable protective clothing.
Environmental Precautions: Prevent spillage from entering drains, soils, or natural waterways.
Cleanup Methods: Sweep up and place in suitable containers for disposal. Clean spill area thoroughly with water and detergent.
Handling: Handle away from incompatible materials. Avoid generation or inhalation of dust. Keep container tightly closed when not in use.
Storage: Store in a cool, dry, and well-ventilated area. Keep away from moisture, strong oxidizers, acids, and sources of ignition. Store in a tightly sealed original container.
Occupational Exposure Limits: No established occupational exposure limits.
Engineering Controls: Work in a chemical fume hood. Use local exhaust ventilation.
Personal Protective Equipment: Use chemical resistant gloves (nitrile recommended), laboratory coat, and eye protection (goggles). Respiratory protection required if dust or aerosols generated.
Hygiene Measures: Wash hands thoroughly after handling. Remove contaminated clothing and wash before reuse.
Physical State: Solid, crystalline powder
Color: White to off-white
Odor: Odorless or faint characteristic
Melting Point: 250 – 255 °C (decomposes)
Boiling Point: Not applicable (decomposes)
Solubility: Slightly soluble in water, soluble in acetonitrile and methanol
Density: Approximately 1.5 g/cm³
pH: Not applicable
Chemical Stability: Stable under recommended storage conditions.
Reactivity: Reacts with strong oxidizers, acids, and bases.
Hazardous Decomposition Products: Carbon oxides, phosphorus oxides, and hydrogen iodide on thermal decomposition.
Conditions to Avoid: Heat, open flame, moisture, sunlight.
Polymerization: Will not occur under normal handling.
Routes of Exposure: Inhalation, ingestion, skin and eye contact.
Acute Effects: Harmful if swallowed. Causes irritation to respiratory tract, eyes, and skin.
Chronic Effects: Prolonged or repeated exposure may cause dermatitis, allergic skin reactions.
Symptoms: Irritation, redness, itching, headache, dizziness, nausea.
Toxicity Data: LD50 (oral, rat): Not available.
Ecotoxicity: Product not expected to pose serious hazards to aquatic organisms at low concentrations; avoid uncontrolled release.
Mobility: Low mobility in soil anticipated. Water solubility remains limited.
Persistence and Degradability: No specific data available, not readily biodegradable.
Bioaccumulation: No data available; unlikely due to physicochemical properties.
Waste Disposal Methods: Dispose of contents/container in accordance with local, regional, and national regulations. Do not discharge to natural waters or sewer systems. Incineration in approved facility preferred.
Contaminated Packaging: Triple rinse and offer for recycling or disposal according to local regulations.
Precautions: Wear proper protective clothing and gloves during disposal handling.
UN Number: Not regulated for transport.
Proper Shipping Name: Not classified as hazardous for transportation.
Transport Hazard Class: Not applicable.
Packing Group: Not applicable.
Environmental Hazards: Avoid large-scale release; not environmentally hazardous for transportation.
Special Precautions: Secure packaging to prevent movement, inspect container before transport to confirm integrity.
EU Regulations (REACH): Not listed as a substance of very high concern.
US Regulations (TSCA): Listed in the TSCA inventory.
Canada (DSL/NDSL): Present on Domestic Substance List.
Other Global Inventories: Japan ENCS: Listed. Australia AICS: Present. Korea KECI: Listed.
Restrictions: None identified under current regulations. Ensure handling according to international chemical safety regulations.
