Methyltriphenylphosphonium Bromide CAS 1779-49-3

1. Methyltriphenylphosphonium bromide is widely used as a key reagent in the Wittig reaction for the synthesis of alkenes from carbonyl compounds, and can also serve as a precursor to phosphonium ylides .
2. Methyltriphenylphosphonium bromide CAS 1779-49-3 acts as a phase transfer catalyst in organic synthesis, facilitating reactions between ionic species in different phases, and is utilized in research for organic synthesis, biological studies, catalysis, and the development of fluorescent probes and advanced materials .
3. Applications of Methyltriphenylphosphonium bromide also include its use as a lipophilic molecule for delivering substances to specific cell components and as a chemical intermediate in the manufacturing of pharmaceuticals and agrochemicals .

1. Store Methyltriphenylphosphonium bromide in a tightly sealed container under an inert gas (e.g., nitrogen) in a cool, dark place (recommended below 15°C) and protected from moisture, as Methyltriphenylphosphonium bromide CAS 1779-49-3 is hygroscopic . Storage temperatures often range from 2-8°C .
2. Keep Methyltriphenylphosphonium bromide away from strong oxidizing agents and ensure containers are stored separately from incompatible materials .
3. Always use Methyltriphenylphosphonium bromide CAS 1779-49-3 appropriate personal protective equipment (PPE) including chemical-resistant gloves, protective clothing, and eye/face protection, and handle only in a fume hood to avoid breathing dust .

1. Immediately isolate the spill area, eliminate all ignition sources, and contain Methyltriphenylphosphonium bromide using dry, inert, non-combustible absorbent material (e.g., sand) while avoiding dust generation .
2. Carefully collect Methyltriphenylphosphonium bromide CAS 1779-49-3 using non-sparking tools into sealed, labeled chemical waste containers; prevent entry into drains or waterways and avoid environmental contamination .
3. Personnel must wear suitable PPE including self-contained breathing apparatus during cleanup; dispose of all waste according to local, state, and federal environmental regulations .

1. Methyltriphenylphosphonium bromide is classified as harmful if swallowed (H302), in contact with skin (H312), or if inhaled (H332). It causes skin irritation (H315) and serious eye irritation (H319), and may cause respiratory irritation (H335) . GHS signal word is "Warning" .
2. Methyltriphenylphosphonium bromide is a white to off-white crystalline powder with a melting point of 226-238°C . It is soluble in water and polar solvents like methanol . Transport classifications include UN 1390 (Hazard Class 4.3/PG 2) and UN 2811 .
3. Always consult Methyltriphenylphosphonium bromide CAS 1779-49-3 the specific Safety Data Sheet (SDS) for Methyltriphenylphosphonium bromide for complete hazard information, first-aid procedures (P302+P352 for skin, P305+P351+P338 for eyes, P304+P340 for inhalation), and handling instructions .