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Phosphide Powder Classification
Ionic Phosphates
Alkali metals, metals of the alkaline Earth, zinc, aluminium and other phosphates. You can think of these compounds as phosphine derivatives, where the hydrogen atoms were replaced by metals atoms with equal equivalence. Most ionics phosphates can be decomposed in acids. 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 are difficult to break down by acids or water.

Phosphide Powder Application
Using ferric phosphor (22-39% P), high-strength, corrosion resistant steel can be produced. Steel containing 0.1-0.3% phosphorus (alloyed), will improve its strength and resistance to corrosion. Ferric Phosphor is a by-product from single phosphor made by the electric furnace process. In ferric phosphor, there are small amounts of chromium, silicon, and alum.
Iridium-phosphide is very hard and chemically durable. It is used to make pens.
Magnesium Phosphide releases half of its phosphine into 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 granular or crystallized material that is reddish-brown in color with a melting temperature of approximately 1600. Its relative density measures 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 and signal explosives. Zinc phosphide, a dark gray powder that has an unpleasant odor and a melting point of above 420 is non-combustible when ignited. The density is 4.55g/cm3(18). It can be dissolved in water or oil. Zinc phosphide poison baits with a 2% – 3% zinc powder and a red phosphorus at 550 can be used to kill rats and voles. Aluminum phosphide comes in a gray-yellow powder or crystal. It does not melt, sublimate, or decompose at 1000°C. The ignition temperature of the powder is around 100, and its relative density is 2,85. It is made from aluminum powder and red-phosphorus, which are acted upon by an electric current or flame. Aluminum phosphide should be dried and stored. It releases 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 ethophosphate or other phosphorus-hydrides are present, spontaneous combustion occurs. Phosphine has been classified as a gas that is highly toxic and spontaneously flameable. Inhaling phosphine may affect the heart and respiratory system as well as the kidneys, stomach nervous system, liver, and stomach.

Tech Co., Ltd. is a leading Phosphide powder with over 12 year experience in chemical product research and design. You can contact us to send an inquiry if you are interested in high quality phosphonide powder.

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