CAS No. 7803-51-2 Phosphine Supplier. Characteristics of Phosphine

Phosphine (PH₃) is a colorless, flammable gas with a fishy odor that is highly toxic to humans. It is chemically similar to ammonia (NH₃), but it is less basic and more reactive. Phosphine is used in various industrial applications, including the semiconductor industry for doping silicon and gallium arsenide, in the production of metal phosphides, and as a fumigant in agriculture.

Here are some key characteristics of phosphine:

Chemical Properties:
Molecular formula: PH₃
Molecular weight: 33.99776 g/mol
CAS Number: 7803-51-2
Boiling point: -87.8 °C
Melting point: -133.3 °C
Density: 1.634 g/L at STP (standard temperature and pressure)
Physical Properties:
Phosphine is a colorless gas at room temperature and pressure.
It is flammable and can ignite spontaneously when exposed to air due to its high reactivity.
Toxicity:
Phosphine is extremely toxic by inhalation, causing severe lung damage and can lead to death.
It is also toxic if swallowed or absorbed through the skin.
Uses:
In semiconductor manufacturing for doping processes.
As a fumigant in grain storage to control pests.
In the synthesis of organophosphorus compounds.
Handling and Storage:
Phosphine must be handled with extreme care due to its toxicity and flammability.
It should be stored in a cool, dry place away from any source of ignition.
Special precautions are necessary to prevent leaks or spills.
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