FACTOID # 160: Of all the nations of the world, China has the most people. But there are 71 nations that are more crowded.
 
 Home   Encyclopedia   Statistics   Countries A-Z   Flags   Maps   Education   Forum   FAQ   About 
 
WHAT'S NEW
RECENT ARTICLES
More Recent Articles »
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Silver acetylide

Silver acetylide is an inorganic chemical compound with the formula Ag2C2, a metal acetylide. The name derived from the way it is synthezised, the alternative silver carbide is not used in literature, although the substance is similar to calcium carbide . It is a heat and shock sensitive high explosive with the unusual property that on ignition it does not evolve any gas. A metal acetylide is an alkyne that has had a proton (hydrogen) removed from the terminal end by a metal such as sodium or an organolithium. ... Calcium carbide is a chemical compound with the chemical formula CaC2. ... This article is concerned solely with chemical explosives. ...


Synthesis

Silver acetylide can be produced by passing acetylene gas through a solution of silver nitrate. [1] Acetylene (IUPAC name: ethyne) is the simplest alkyne hydrocarbon, consisting of two hydrogen atoms and two carbon atoms connected by a triple bond. ... R-phrases , S-phrases , , , , Flash point non-flammable Supplementary data page Structure and properties n, εr, etc. ...


The equation is as follows:


2 AgNO3(aq) + C2H2(g) → Ag2C2(s) + 2 HNO3(aq)


The reaction product is a greyish precipitate. This is the same synthesis from Berthelot in which he first found silver acetylide in 1866. [2] Marcellin Berthelot Marcellin (or Marcelin) Pierre Eugène Berthelot (October 25, 1827 - March 18, 1907) was a French chemist and politician. ...


Silver acetylide can be formed on the surface of silver or high-silver alloys, eg. in pipes used for transport of acetylene, if silver brazing was used in their joints.


Toxicity

As with all silver salts, silver acetylide is toxic. Ingesting as little as 2 grams can be fatal.[citation needed]


References

  1. ^ G.-C. Guo, Q.-G. Wang, G.-D. Zhou, T. C. W. Mak (1998). "Synthesis and characterization of Ag2C2·2AgClO4·2H2O: a novel layer-type structure with the acetylide dianion functioning in a 6-η1,η1:η2,η2:η2,η2 bonding mode inside an octahedral silver cage". Chem. Commun.: 339 - 340. DOI:10.1039/a708439k.
  2. ^ M. P. Berthelot (1866). ".". Annalen der Chemie: 245.
  • Links to external chemical sources

 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments
Please enter the 5-letter protection code

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


Lesson Plans | Student Area | Student FAQ | Reviews | 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.