FACTOID # 10: The total number of state executions in 2005 was 60: 19 in Texas and 41 elsewhere. The racial split was 19 Black and 41 White.
 
 Home   Encyclopedia   Statistics   States A-Z   Flags   Maps   FAQ   About 
   
 
WHAT'S NEW
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Zinc phosphide
Zinc phosphide
Image:Zinc phosphide.jpg
General
Other names trizinc diphosphide
Molecular formula Zn3P2
Molar mass 258.1 g/mol
Appearance dark gray crystals
Crystal structure tetragonal
CAS number [1314-84-7]
Properties
Density and phase 4.6 g/cm3, solid
Solubility in water insoluble
Melting point 420°C
Boiling point 1100°C
Hazards
EU classification
NFPA 704
Except where noted otherwise, data are given for
materials in their standard state (at 25 °C, 100 kPa)
Infobox disclaimer and references

Zinc phosphide (Zn3P2) is an inorganic chemical compound. A chemical formula (also called molecular formula) is a concise way of expressing information about the atoms that constitute a particular chemical compound. ... Molar mass is the mass of one mole of a chemical element or chemical compound. ... Rose des Sables (Sand Rose), formed of gypsum crystals In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms in a crystal. ... CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences, mixtures and alloys. ... Density (symbol: ρ - Greek: rho) is a measure of mass per unit of volume. ... In the physical sciences, a phase is a set of states of a macroscopic physical system that have relatively uniform chemical composition and physical properties (i. ... It has been suggested that this article or section be merged with Solution. ... Water has the chemical formula of H2O, meaning that one molecule of water is composed of two hydrogen atoms and one oxygen atom. ... The melting point of a solid is the temperature at which it changes state from solid to liquid. ... The boiling point of a substance is the temperature at which it can change its state from a liquid to a gas throughout the bulk of the liquid at a given pressure. ... Council Directive 67/548/EEC of 27 June 1967 on the approximation of laws, regulations and administrative provisions relating to the classification, packaging and labelling of dangerous substances (as amended) is the main source of European Union law concerning chemical safety. ... NFPA 704 is a standard maintained by the U.S. National Fire Protection Association. ... In chemistry, the standard state of a material is its state at 1 bar (100 kilopascals) and 25 degrees Celsius (298. ... General Name, Symbol, Number zinc, Zn, 30 Chemical series transition metals Group, Period, Block 12, 4, d Appearance bluish pale gray Atomic mass 65. ... This article is about the chemical element. ... Inorganic chemistry is the branch of chemistry concerned with the properties and reactions of inorganic compounds. ... A chemical compound is a chemical substance formed from two or more elements, with a fixed ratio determining the composition. ...


Metal phosphides have been used as a means of killing rodents. 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. 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. Rat poisons are a category of pest control chemicals intended to kill rats. ... Aluminium phosphide (AlP) is a compound of aluminium and phosphorus. ... Calcium phosphide is a chemical that has uses in incendiary bombs. ...


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. The odor attracts rodents, but has repulsive effect on other animals; birds, notably wild turkeys, are not sensitive to the smell, feed on the bait, and become collateral damage. The baits have to contain sufficient amount of zinc phosphide in sufficiently attractive food in order to kill the rodents in a single serving; a sublethal dose may cause aversion towards zinc-phosphide baits encountered by surviving rodents in the future. Phosphine is the common name for phosphorus hydride (PH3), also known by the IUPAC name phosphane and, occasionally, phosphamine. ... Hydrolysis is a chemical process in which a molecule is split into two parts by the addition of a molecule of water. ... Binomial name Meleagris gallopavo Linnaeus, 1758 For other uses, see Wild Turkey (disambiguation). ...


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 (or emesis) is the forceful expulsion of the contents of ones stomach through the mouth. ...


Conditions/substances to avoid contact of zinc phosphide with are: acids, water, carbon dioxide and strong oxidizing agents. For other uses, see Acid (disambiguation). ... This article focuses on water as it is experienced in everyday life. ... Carbon dioxide is an atmospheric gas comprised of one carbon and two oxygen atoms. ... European Union Chemical hazard symbol for oxidizing agents Dangerous goods label for oxidising agents An oxidizing agent is a compound that oxidizes another substance in electrochemistry or redox chemical reactions. ...


External links

  • Zinc phosphide properties and use in Michigan
  • MD0173 - Pesticides in the military
  • Link page to external chemical sources.

 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:

 


Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m