Product Description
Phosphine (CAS No. 7803-51-2), chemical formula PH₃, is a highly toxic, flammable and explosive gas. It is widely used in the semiconductor industry as a dopant source for material processing, and also applied in agriculture as a fumigant pesticide.
Owing to its extreme toxicity and hazardous nature, phosphine demands strict handling protocols and safety controls. Exposure to even very low concentrations can lead to severe health hazards and may be fatal.
Key Specifications
| Parameter | Electronic Grade | Industrial Grade |
| Purity | ≥99.999% | ≥99.9% |
| O₂ Content | ≤0.5 ppm | ≤50 ppm |
| H₂O Content | ≤1 ppm | ≤10 ppm |
| Total Impurities | ≤10 ppm | ≤1000 ppm |
Product Usage
1. Semiconductor Manufacturing
Silicon Doping: Serves as a dopant gas source for n-type silicon, enabling accurate doping concentration control and excellent uniformity, with a reported variance of ≤0.1%.
GaN-Based LED Production: Employed in Metal Organic Chemical Vapor Deposition (MOCVD) processes to facilitate the fabrication of gallium nitride (GaN)-based LEDs.
2. Grain Fumigation
Pest Control: Used as a fumigant for stored grains, with reported pest mortality rates of up to 99.9% at a dosage of 2 g/m³ under OECD Guideline 633.
Low-Residue Alternative: Offers a potential alternative to methyl bromide for grain protection and post-harvest pest management, with reduced chemical residue concerns.
3. Chemical Synthesis
Asymmetric Hydrogenation: Applied in catalytic asymmetric hydrogenation reactions to improve the selective formation of chiral compounds.
Pharmaceutical Intermediates: Supports the synthesis of optically active intermediates used in pharmaceutical manufacturing.
