DESCRIPTION: Phosphine is used in the semiconductor industry to introduce phosphorus into silicon crystals . It is also used as a fumigant, a polymerization initiator and as an intermediate for the preparation of several flame retardants. Phosphine has an odor of garlic or decaying fish but is odorless when pure.
How do you test for phosphine gas?
The . ilver-nitrate test was carried out to check the presence of the phosphine gas l S The positive samples, were confirmed by the steam-distillation method IS. The silver nitrate paper test is based on the property of PH) to reduce silver nitrate into silver. which gives a black colour on the filter paper.
What does phosphine look like?
Phosphine appears as a colorless gas with a disagreeable odor of fish or garlic. Boiling point -126°F; freezing point -209°F. ... Phosphine is a colorless, flammable, and explosive gas at ambient temperature that has the odor of garlic or decaying fish. Small amounts occur naturally from the break down of organic matter.
What is special about phosphine?
Phosphine gas is denser than air and hence may collect in low-lying areas. It can form explosive mixtures with air, and may also self-ignite. Phosphine can be absorbed into the body by inhalation.
What does PH3 stand for in chemistry?
phosphine (PH3), also called hydrogen phosphide, a colourless, flammable, extremely toxic gas with a disagreeable garliclike odour. Phosphine is formed by the action of a strong base or hot water on white phosphorus or by the reaction of water with calcium phosphide (Ca3P2).
What produces PH3?
Phosphine is formed by the action of a strong base or hot water on white phosphorus or by the reaction of water with calcium phosphide (Ca3P2). ...
What is the PH of PH3?
Names
-----------------
Related compounds
What is PH3 used for?
Phosphine (PH3), a highly toxic, flammable gas, is used in the semiconductor industry, in chemical processing, and more commonly in fumigation of grain, food products, and tobacco, prior to international transport.
How do you get PH3?
Laboratory preparation: It is usually obtained by boiling white phosphorus with 30-40% solution of caustic soda in an inert atmosphere of CO2. Phosphine so obtained is impure. It is passed into an aqueous solution of hydrogen iodide, PH4I is formed. PH4I is heated with KOH or NaOH, pure phosphine is obtained.Mar 10, 2016
Is phosphine dangerous when wet?
* Aluminum Phosphide will react with WATER or MOISTURE to release highly toxic and flammable Phosphine gas. ... * Aluminum Phosphide is a HIGHLY FLAMMABLE and REACTIVE chemical and a DANGEROUS FIRE and EXPLOSION HAZARD.