Description

Methylenetriphenylphosphine is a versatile organophosphorus ylide widely used as a key reagent in synthetic organic chemistry. Its primary value lies in its role as a methylene transfer agent, enabling the efficient construction of carbon-carbon double bonds via the Wittig reaction. This compound is essential for researchers and process chemists in the pharmaceutical, agrochemical, and advanced materials sectors who require high-purity intermediates for complex synthesis.

Application

• Wittig Olefination Reactions: As a fundamental reagent for the synthesis of alkenes from carbonyl compounds, crucial for creating pharmaceutical intermediates and fine chemicals.
• Pharmaceutical Intermediate Synthesis: Used in the production of active pharmaceutical ingredients (APIs) and complex organic molecules requiring specific alkene geometries.
• Agrochemical Manufacturing: Employed in the synthesis of herbicides, pesticides, and plant growth regulators that contain olefinic structures.
• Material Science Research: Serves as a building block for creating novel polymers, liquid crystals, and organic electronic materials.
• Academic & Industrial R&D: A staple reagent in laboratory-scale research and process development for exploring new synthetic pathways.
• Specialty Chemical Production: Facilitates the manufacture of flavors, fragrances, and other high-value specialty chemicals.

Basic Information

Product Name	Methylenetriphenylphosphine
CAS No.	3487-44-3
Molecular Formula	C19H17P
Molecular Weight	276.31 g/mol
Synonyms	Triphenylphosphonium Methylide; (Methylidene)triphenylphosphorane; Triphenylmethylenephosphorane; Phosphorane, (methylene)triphenyl-; Phosphorane, methylenetriphenyl-; Ylide, Methylenetriphenylphosphonium; Wittig Reagent (Methylene); MTPP
EINECS	222-491-7

Quality Control

Our Methylenetriphenylphosphine is manufactured under strict quality management systems to ensure batch-to-batch consistency and high chemical purity. Each lot undergoes comprehensive analytical testing, including NMR, HPLC, and titration methods, to confirm identity, potency, and impurity profiles. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic (moisture-sensitive) and easily oxidized nature, this material should be stored under an inert atmosphere (argon or nitrogen) in a cool, dry place. Recommended long-term storage temperature is 2-8°C. Allow the container to reach room temperature before opening to prevent moisture condensation.

Specification

Item	Specification
Appearance	White to pale yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Melting Point	174 - 178 °C
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.