High Purity Phosphine (PH3) Specialty Gases
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Phosphane (PH3), also known as phosphine, is a colorless, highly toxic, and flammable gas with a distinct garlic-like odor. It is a simple phosphorus hydride and is used in various industrial applications, including the production of semiconductors and as a dopant in the electronics industry. Here is a detailed overview of the physical properties of phosphane:
Atomic and Molecular Properties
Molecular Weight: 33.99 g/mol
Molecular Structure: Phosphane is a triangular pyramidal molecule with a central phosphorus atom bonded to three hydrogen atoms.
Physical Properties
Density |
At standard temperature and pressure (STP), the density of phosphane is approximately 1.31 g/L, which is slightly denser than air. |
Melting Point |
-133.4°C (-207.9°F) at a pressure of 1 atm. |
Boiling Point |
-87.7°C (-124.1°F) at 1 atm. |
Critical Temperature |
96.8°C (206.2°F) at a pressure of 52.4 atm (5,290 kPa). |
Critical Pressure |
52.4 atm (5,290 kPa). |
Critical Density |
0.28 g/cm³ |
Solubility
Phosphane is slightly soluble in water and can react with it to form phosphine and hydrochloric acid. It is also soluble in organic solvents.
Thermal Conductivity
PH3 has a relatively low thermal conductivity, which is typical for gases, especially those with small molecules.
Viscosity
As a gas, the viscosity of phosphane is low and behaves similarly to other gases in this regard.
Reactivity
Phosphane is a highly reactive gas and can react with oxygen to form phosphorus oxides. It can also react with halogens and other oxidizing agents.
Uses
PH3 is used in the semiconductor industry for the growth of certain types of crystals and in the doping of semiconductors.
It is also used in the production of certain phosphorus compounds and as a precursor in the synthesis of some organic compounds.
Safety
Phosphane is highly toxic and can cause rapid unconsciousness or even death at high concentrations.
Solubility
Phosphane is slightly soluble in water and can react with it to form phosphine and hydrochloric acid. It is also soluble in organic solvents.
Thermal Conductivity
PH3 has a relatively low thermal conductivity, which is typical for gases, especially those with small molecules.
Viscosity
As a gas, the viscosity of phosphane is low and behaves similarly to other gases in this regard.
Reactivity
Phosphane is a highly reactive gas and can react with oxygen to form phosphorus oxides. It can also react with halogens and other oxidizing agents.
Uses
PH3 is used in the semiconductor industry for the growth of certain types of crystals and in the doping of semiconductors.
It is also used in the production of certain phosphorus compounds and as a precursor in the synthesis of some organic compounds.
Safety
Phosphane is highly toxic and can cause rapid unconsciousness or even death at high concentrations.
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