Overview
Methylphosphine (CH3PH2) is a simple organophosphorus compound, structurally analogous to ammonia but with a phosphorus atom replacing nitrogen. It is primarily used in industrial and research settings as a building block for more complex phosphorus-containing molecules. Due to its reactivity, it is typically handled under controlled conditions. As a gas at room temperature, methylphosphine is often stored as a liquefied compressed gas or dissolved in solvents. Its pyrophoric nature demands strict safety protocols during storage and transportation. The compound plays a niche but critical role in materials science and organic synthesis.
Physical and Chemical Properties
Methylphosphine is a colorless, foul-smelling compound that readily ignites upon exposure to air. Its boiling point (-17°C) and melting point (-134°C) reflect its high volatility. The molecule exhibits pyramidal geometry at the phosphorus center, with a bond angle smaller than that of ammonia due to poorer orbital overlap. Chemically, it acts as a potent reducing agent and nucleophile. It reacts violently with oxidizing agents and water, releasing toxic phosphine gas (PH3). Solubility is limited to nonpolar organic solvents, and it forms complexes with transition metals, which are useful in catalysis.
Main Applications
In semiconductor manufacturing, methylphosphine serves as a dopant source for introducing phosphorus into silicon wafers. Its decomposition at high temperatures allows precise phosphorus incorporation, enhancing electronic properties. The compound is also a precursor to phosphine ligands in homogeneous catalysis, particularly in hydroformylation and hydrogenation reactions. Additionally, it is used to synthesize pesticides, flame retardants, and pharmaceuticals, though these applications often require further derivatization to stabilize the phosphorus center.
Safety and Storage
Methylphosphine poses significant hazards: it is highly flammable, toxic (TLV 0.5 ppm for PH3), and corrosive. Storage requires steel cylinders with inert gas padding, kept in well-ventilated areas away from ignition sources. Leak detection systems are recommended due to its low odor threshold. Personal protective equipment (PPE) must include gas-tight goggles, gloves resistant to organophosphorus compounds, and supplied-air respirators. Emergency protocols should address fire suppression (use dry chemical powder) and gas scrubbing to neutralize accidental releases.
B2B Procurement Guide
When sourcing methylphosphine, prioritize suppliers specializing in air-sensitive chemicals. Key procurement criteria include purity (≥98% for most applications), packaging integrity (valved cylinders or ampoules), and compliance with GHS labeling. Bulk buyers should negotiate contracts with logistics providers experienced in hazardous material transport (e.g., DOT/ADR-certified carriers). For research quantities, consider manufacturers offering pre-dissolved solutions in toluene or THF to simplify handling. Always audit suppliers for ISO 9001 certification and request batch-specific analytical data.
Related Manufacturers
- 主营：三硫代碳酸钠、红色素-16、聚乙烯亚胺、甲氧甲基三苯基氯化膦、三乙二醇二异辛酸酯、巯基苯并噻唑钠、L-丙交酯、乙交酯、石油酯-T50、多元醇苯甲酸酯、热压敏染料、光稳定剂、高分子降解材料
- 主营：异辛醇、乳化剂、乙烯醚、三苯基甲基溴化磷、醚羧酸、脂肪醇、分散剂、染色助剂、聚乙二醇、异构醇醚、泊洛沙姆、椰油酰胺、基羟乙基、烷基糖苷、特辛基酚、聚氧乙烯、嵌段聚醚、单油酸酯、异构十三醇、丙烯磺酸钠、氢化蓖麻油、丙烯酰胺基、醇醚葡糖苷、低泡渗透剂、甲酯乙氧基、癸基葡糖苷
- 主营：合成树脂、固化剂、不饱和树脂、甲基三苯基、环氧树脂、聚酯多元醇、酚醛树脂、医药中间体
- 主营：增塑剂、草酸镍、阻燃剂、栀子蓝、抗氧剂、偶联剂、异壬酸、1-二十烯、间氟溴苄、异胞嘧啶、磷酸三钾、油墨油剂、洗涤助剂、苯磺酸钠、单体香料、环磺酮酸、分散染料、无机颜料、苹果酸镁、表面处理剂、丙二醇甲醚、化妆品原料、丁酸甘油酯、硅烷处理剂、表面活性剂
- 主营：活性脂、三苯胺、mof材料、聚乙二醇、海藻酸钠、聚苯乙烯、蛋白交联剂、琥珀酰亚胺酯、月桂酸甘油酯、二元醛基cof单体
- 主营：丙烯酸单体、全氟三丁胺、乙二醇二缩水甘油醚、甲基丙烯酸十八酯、催化剂、催干剂、环氧稀释剂、增塑剂、偶联剂、交联剂、橡胶塑料助剂、电镀电子科技材料、丙烯酸酯类
- 主营：有机原料、中间体、香精香料、催化剂、有机硅、表面活性剂
- 主营：架桥剂、YW100 锂萃取剂、端羧基液体丁腈橡胶、甲基亚膦酸二乙酯、10-羟基癸酸、苯乙烯磷酸、肉豆蔻酸镁、硬脂酸钴、全氟三丁胺、乙烯基磷酸二乙酯、磷酸锰铁锂、β-磷酸三钙、十一烯酸、钨酸铝、1-乙炔基环已醇、间二异丙苯、锂硅合金、溴甲酚绿、生物活性玻璃、溴代海因树脂颗粒、红铝、龙涎酮、原丁酸三甲酯
- 主营：叔碳酸、十八醛、溶菌酶、2-甲基丁醛、海藻糖、癸二醇、氨基丙基、氢路噻嗪、邻苯二甲、乙基碳二、羟基癸酸、正十七烷、谷胱甘肽、烷二甲醇、松果体素、vc磷酸酯镁、朱栾倍半萜、丁烷四乙酸、表面活性剂、癸烷撑二醇、缩水甘油邻、10-羟基羊蜡酸、氢氯噻嗪杂质、盐酸邻菲罗啉、壳聚糖季铵盐
- 主营：甘氨酸、水苏糖、阻燃剂、乙氧基羰基亚甲基、硫酸锌、硫酸锆、硫酸锂、硫酸锶、硫酸锰、铝酸锌、1680-21-3、牛磺酸、褪黑素、磷酸铁、丙酸铵、苏云金、碳酸镁、麝香酮、肉桂醛、磷酸铝、王浆酸、椰油胺、赖氨酸、增塑剂、浸膏粉、乙氧基
- 主营：全氟三丁胺、二苄叉山梨醇、六氟丙烯二聚体、三邻甲基苯基磷、六氟环氧丙烷二聚体、异丙醇铝、纳米勃姆石、二异戊基硫醚、隐色结晶紫、邻菲罗啉
- 主营：化学品、香精香料、试剂、中间体、有机硅、橡胶树脂、催化剂、纳米材料
- 主营：杜仲素、对位酯、丙烯酸酯、甲氧甲基三苯基氯化膦、二氧化硫脲、乙基麦芽酚、饲料添加剂、油酸基硬脂酸、二苯基硅二醇
- 主营：防冻液、冰醋酸、乙二醇、甲基三苯基溴化膦、冰乙酸、纯吡啶、丙二醇、羟基苯、14丁二醇、3-丙三醇、四氢呋喃、环保乙腈、化工苯酚、1.4丁二醇、医用苯酚、工业苯酚、精制苯酚、价位四氢、乙腈工业、乙酸乙酯、吡啶化工、甲酸乙酯、吡啶工业、求购苯酚、高纯三氯、实验乙腈
- 主营：高铁酸钾