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The Different Types of Phosphide Powder

Phosphide Powder Classification

Ionic Phosphates

Alkali metals, earth metals with alkaline pH, zinc, aluminum and phosphates are all included. You can think of these compounds as derivatives from phosphines, where the hydrogen atoms were replaced by metals atoms with equal equivalence. Acids dissolve most ionic-phosphate compounds. Calcium phosphide (Ca3P2), for instance, is easily reacted with water in order to form hydroxide and phosphide. Zinc Zn3P2 is a phosphide that reacts slowly in water, but readily with acid.

Metallic Phosphide

Phosphates are a mixture of most heavy metals. They have a similar composition and look to metal intercompounds and most cannot be broken down by acids or water.

Phosphide Powder Application

Ferric phosphor (22-39% P) can be used to make high-strength alloy steel. Steel with 0.1-0.3% (alloyed phosphorus) can have its strength and resistance to corrosion greatly increased. Ferric Phosphor is a by-product from single phosphor made by the electric furnace process. In ferric phosphor, there are small amounts of silicon, chrome, alum, and other impurities.

Iridium-phosphide pens are made from this extremely stable chemical compound.

Magnesium Phosphide Releases Half its Phosphine in Moist Air

Aluminum phosphide can also release highly toxic phosphine into moist air. This is why it’s used in grain fumigants.

Copper phosphide can be used as an oxidizer.

The phosphating grain can be used as a semi-conductor.

The Phosphide

Calcium phosphide

It is a gray or reddish brown granular material, with a melting temperature of 1600°C and a relative densities of 2.51. This material is soluble only in acids, but not in ethanol or ethyl alcohol. It is made by heating aluminum and carbon to reduce the calcium phosphate. It is used to make phosphine bombs, signal bombs, and fireworks. Zinc phosphide has a grayish powder with a foul odor. It is incombustible when ignited, and its density is 4.55g/cm3 (18). It can be dissolved in water or lye. Rats and mice are poisoned by Zinc phosphide Baits, which contain between 2% and 3% zinc powder with red phosphorus at 550. Aluminum phosphide comes in a gray-yellow powder or crystal. It does not melt, sublimate, or decompose at 1000°C. The ignition temperature is around 100, and the relative densities are 2.85. It is made from aluminum powder and red-phosphorus interacting with an electric current or flame. Aluminum phosphide should be stored dry and released highly toxic gas when wet.

Sodium phosphide

The red crystal Na3P is highly toxic and flammable when it reacts with water. Use as a phosphating compound to prepare pesticides and phosphine. Chemical reaction produces red phosphorus by combining metallic sodium and red phosphorus.

Hydrogen phosphide

Phosphine, which is stored in compressed cylinders, is a colorless gas that’s highly toxic and flammable. Its storage pressure (522psig) is 70oF of its vapor-pressure. The gas is heavier and smells similar to fish. When traces of other phosphorus-hydrides like ethophosphate is found, it will cause spontaneous combustion. Phosphine has been classified as a gas that is highly toxic and spontaneously ignites. Inhalation can cause damage to the liver, heart, respiratory tract, kidneys and stomach.

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