Zinc phosphide - Citizendia

Zinc phosphide
Image:Zinc phosphide.jpg
Other names	trizinc diphosphide
Identifiers
CAS number	[1314-84-7]
Properties
Molecular formula	Zn₃P₂
Molar mass	258. CAS registry numbers are unique numerical identifiers for Chemical compounds Polymers biological sequences mixtures and Alloys They are also referred to A chemical formula is a way of expressing information about the Atoms that constitute a particular Chemical compound, and how the relationship between those atoms changes Molar mass, symbol M, is the Mass of one mole of a substance ( Chemical element or Chemical compound) 1 g/mol
Appearance	dark gray crystals
Density	4. The density of a material is defined as its Mass per unit Volume: \rho = \frac{m}{V} Different materials usually have different 6 g/cm³, solid
Melting point	420°C
Boiling point	1100°C
Solubility in water	insoluble
Structure
Crystal structure	tetragonal
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Zinc phosphide (Zn₃ P₂) is an inorganic chemical compound. The melting point of a solid is the temperature range at which it changes state from solid to Liquid. The boiling point of a liquid is the temperature at which the Vapor pressure of the liquid equals the environmental pressure surrounding the liquid Solubility is the characteristic Physical property referring to the ability of a given substance the Solute, to dissolve in a Solvent. Water is a common Chemical substance that is essential for the survival of all known forms of Life. In Mineralogy and Crystallography, a crystal structure is a unique arrangement of Atoms in a Crystal. In Chemistry, the standard state of a material is its state at 1 bar (100 Kilopascals exactly Zinc (ˈzɪŋk from Zink is a Metallic Chemical element with the symbol Zn and Atomic number 30 Phosphorus, (ˈfɒsfərəs is the Chemical element that has the symbol P and Atomic number 15 Traditionally inorganic compounds are considered to be of mineral not biological origin A chemical compound is a substance consisting of two or more different elements chemically bonded together in a fixed proportion by Mass.

Metal phosphides have been used as rodenticides. Rodenticides are a category of Pest control Chemicals intended to kill Rodents Single feed baits are chemicals sufficiently A mixture of food and zinc phosphide is left where the rodents can eat it. The acid in the digestive system of the rodent reacts with the phosphide to generate the toxic phosphine gas. Phosphine is the common name for phosphorus hydride (PH3 also known by the IUPAC name phosphane and occasionally phosphamine. This method of vermin control has possible use in places where rodents immune to many of the common poisons have appeared. Other pesticides similar to zinc phosphide are aluminium phosphide and calcium phosphide. Aluminium phosphide is the Chemical compound with the formula AlP Calcium phosphide ( CP, Ca3P2 is a chemical that has uses in Incendiary bombs It has the appearance of red-brown crystalline powder or grey lumps

Zinc phosphide is typically added to rodent baits in amount of around 0. 75-2%. The baits have strong, pungent garlic-like odor characteristic for phosphine liberated by hydrolysis. Phosphine is the common name for phosphorus hydride (PH3 also known by the IUPAC name phosphane and occasionally phosphamine. Hydrolysis is a Chemical reaction during which one or more water molecules are split into hydrogen and hydroxide ions which may go on to participate in further reactions The odor attracts rodents, but has a repulsive effect on other animals; birds, notably wild turkeys, are not sensitive to the smell. The Wild Turkey ( Meleagris gallopavo) is native to North America and is the heaviest member of the Galliformes. The baits have to contain sufficient amount of zinc phosphide in sufficiently attractive food in order to kill rodents in a single serving; a sublethal dose may cause aversion towards zinc-phosphide baits encountered by surviving rodents in the future.

Rodenticide-grade zinc phosphide usually comes as a black powder containing 75% of zinc phosphide and 25% of antimony potassium tartrate, an emetic to cause vomiting if the material is accidentally ingested by humans or domestic animals. Vomiting (also called throwing up, emesis) is the forceful expulsion of the contents of one's Stomach through the Mouth and sometimes the However, it is still effective against rats, mice, guinea pigs and rabbits, all of which do not have a vomiting reflex. [1]

Conditions/substances to avoid contact of zinc phosphide with are: acids, water, carbon dioxide and strong oxidizing agents. In Computer science, ACID ( Atomicity Consistency Isolation Durability) is a set of properties that guarantee that Database transactions are Water is a common Chemical substance that is essential for the survival of all known forms of Life. Carbon dioxide ( Chemical formula:) is a Chemical compound composed of two Oxygen Atoms covalently bonded to a single An oxidizing agent or oxidising agent (also called an oxidant, oxidizer or oxidiser) can be defined as either a Chemical compound

Reactions

Preparation:

3 Zn + 2 P (heat) = Zn₃P₂

Hydrolysis:

Zn₃P₂ + 6 H₂O = 2 PH₃ + 3 Zn(OH)₂

References

External links

Haber-Bosch process

The Haber process, also called the Haber–Bosch process, is the Nitrogen fixation reaction of Nitrogen and Hydrogen, over an iron substrate

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