Difference between revisions of "Caesium chromate"

From WikiChem
Jump to: navigation, search
(Imported from http://en.wikipedia.org/w/index.php?title=Caesium_chromate&oldid=309892640)
 
 
(3 intermediate revisions by the same user not shown)
Line 2: Line 2:
 
| ImageFile =
 
| ImageFile =
 
|  ImageSize =
 
|  ImageSize =
−
| IUPACName =
+
| IUPACName = caesium chromate
 
|  OtherNames =
 
|  OtherNames =
 
| Section1 = {{Chembox Identifiers
 
| Section1 = {{Chembox Identifiers
 +
|  InChI = 1/Cr.2Cs.4O/q;2*+1;;;2*-1/rCrO4.2Cs/c2-1(3,4)5;;/q-2;2*+1
 +
|  StdInChI = 1S/Cr.2Cs.4O/q;2*+1;;;2*-1
 +
|  InChIKey = BROHICCPQMHYFY-UICSPCLAAP
 +
|  StdInChIKey = BROHICCPQMHYFY-UHFFFAOYSA-N
 
|  CASNo = 13454-78-9
 
|  CASNo = 13454-78-9
 
|  EINECS = 236-640-4
 
|  EINECS = 236-640-4
 
|  ChemSpiderID = 55521
 
|  ChemSpiderID = 55521
 
|  PubChem = 61613
 
|  PubChem = 61613
−
|  InChI =
 
−
|  RTECS =
 
 
   }}
 
   }}
 
| Section2 = {{Chembox Properties
 
| Section2 = {{Chembox Properties
Line 17: Line 19:
 
|  Appearance = Yellow crystalline solid
 
|  Appearance = Yellow crystalline solid
 
|  Density = 4.237 g/cm<sup>3</sup>
 
|  Density = 4.237 g/cm<sup>3</sup>
−
|  MeltingPt =
 
−
|  Melting_notes =
 
−
|  BoilingPt =
 
−
|  Boiling_notes =
 
 
|  Solubility = 71.4 g/100 ml (13 ºC)
 
|  Solubility = 71.4 g/100 ml (13 ºC)
−
|  SolubleOther =
 
−
|  Solvent =
 
 
   }}
 
   }}
 
| Section7 = {{Chembox Hazards
 
| Section7 = {{Chembox Hazards
−
|  EUClass =
+
|  Reference = <ref>{{CLP Regulation|index=024-017-00-8|page=419}}</ref><ref>{{CFR chromium(VI)}}.</ref>
−
|  EUIndex = 024-017-00-8
+
|  EUIndex = 024-017-00-8 <!-- hazards as chromium(VI) compound -->
−
|  RPhrases =
+
|  GHSPictograms = {{GHS08|Carc. 1B}}{{GHS07|Skin Sens. 1}}{{GHS09|Aquatic Acute 1, Aquatic Chronic 1}}
−
|  SPhrases =
+
|  GHSSignalWord = DANGER
 +
|  HPhrases = {{H-phrases|350|317|410}}
 
|  FlashPt = non-flammable
 
|  FlashPt = non-flammable
−
|  PEL =
+
|  PEL = 0.005 mg/m<sup>3</sup> (as CrO<sub>3</sub>)
 
   }}
 
   }}
 
| Section8 = {{Chembox Related
 
| Section8 = {{Chembox Related
−
|  OtherAnions = [[Caesium sulfate]]
+
|  OtherAnions = [[Caesium molybdate]]
−
|  OtherCations = [[Sodium chromate]]<br/>[[Potassium chromate]]<br/>[[Ammonium chromate]]
+
|  OtherCations = [[Lithium chromate]]<br/>[[Sodium chromate]]<br/>[[Potassium chromate]]<br/>[[Rubidium chromate]]
−
|  OtherFunctn =
 
−
|    Function =
 
−
|  OtherCpds =
 
 
   }}
 
   }}
 
}}
 
}}
−
'''Caesium chromate''' is used to produce [[caesium]] vapour by reaction with silicon or boron, which is used to in the final stages of creating [[vacuum tubes]]; the caesium vapour reacts with the remaining gases, including [[nitrogen]] and [[oxygen]].<ref>{{citation | title = Nature's Building Blocks: An A-Z Guide to the Elements | first = John | last = Emsley | year = 2001 | publisher = Oxford University Press | url = http://books.google.com/books?vid=ISBN0198503407&id=j-Xu07p3cKwC&pg=RA1-PA81&lpg=RA1-PA81&ots=lrSYfxaXNm&dq=%22Caesium+chromate%22+date:1950-2007&ie=ISO-8859-1&output=html&sig=anbEHKeO35oo-C0V5Yc-LkwC8ac | isbn = 0198503407 | page = 81}}.</ref>
+
 
 +
'''Caesium chromate''' is used to produce [[caesium]] vapour by reaction with silicon or boron, which is used to in the final stages of creating [[vacuum tubes]]; the caesium vapour reacts with the remaining gases, including [[nitrogen]] and [[oxygen]].<ref>{{citation | title = Nature's Building Blocks: An A-Z Guide to the Elements | first = John | last = Emsley | year = 2001 | publisher = Oxford University Press | location = Oxford | isbn = 0198503407 | page = 81}}.</ref>
  
 
==References==
 
==References==
 
{{reflist}}
 
{{reflist}}
 +
 +
==Further reading==
 +
*{{IARC chromium}}.
 +
 +
==External links==
 +
*{{PGCH|0138}}
  
 
[[Category:Caesium compounds]]
 
[[Category:Caesium compounds]]
 
[[Category:Chromates]]
 
[[Category:Chromates]]
 +
[[Category:GHS category 1B carcinogens]]
  
 
{{Imported from Wikipedia|name=Caesium chromate|id=309892640}}
 
{{Imported from Wikipedia|name=Caesium chromate|id=309892640}}

Latest revision as of 09:17, 26 August 2009

Caesium chromate
IUPAC name caesium chromate
Identifiers
InChI InChI=1/Cr.2Cs.4O/q;2*+1;;;2*-1/rCrO4.2Cs/c2-1(3,4)5;;/q-2;2*+1
InChIKey BROHICCPQMHYFY-UICSPCLAAP
Standard InChI InChI=1S/Cr.2Cs.4O/q;2*+1;;;2*-1
Standard InChIKey BROHICCPQMHYFY-UHFFFAOYSA-N
CAS number [13454-78-9]
EC number 236-640-4
ChemSpider 55521
PubChem 61613
Properties[1]
Molecular formula CrCs2O4
Molar mass 381.8 g mol−1
Appearance Yellow crystalline solid
Density 4.237 g/cm3
Solubility in water 71.4 g/100 ml (13 ºC)
Hazards[2][3]
EU index number 024-017-00-8
GHS pictograms Carc. 1BSkin Sens. 1Aquatic Acute 1, Aquatic Chronic 1
GHS signal word DANGER
GHS hazard statements H350, H317, H410
Flash point non-flammable
PEL (U.S.) 0.005 mg/m3 (as CrO3)
Related compounds
Other anions Caesium molybdate
Other cations Lithium chromate
Sodium chromate
Potassium chromate
Rubidium chromate
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Caesium chromate is used to produce caesium vapour by reaction with silicon or boron, which is used to in the final stages of creating vacuum tubes; the caesium vapour reacts with the remaining gases, including nitrogen and oxygen.[4]

References

  1. ↑ CRC Handbook of Chemistry and Physics, 62nd ed.; Weast, Robert C., Ed.; CRC Press: Boca Raton, FL, 1981; p B-91. ISBN 0-8493-0462-8.
  2. ↑ Index no. 024-017-00-8 of Annex VI, Part 3, to Regulation (EC) No 1272/2008 of the European Parliament and of the Council of 16 December 2008 on classification, labelling and packaging of substances and mixtures, amending and repealing Directives 67/548/EEC and 1999/45/EC, and amending Regulation (EC) No 1907/2006. OJEU L353, 31.12.2008, pp 1–1355 at p 419.
  3. ↑ 29 CFR 1910.1026 (71 FR 10374, Feb. 28, 2006, as amended).
  4. ↑ Emsley, John Nature's Building Blocks: An A-Z Guide to the Elements; Oxford University Press: Oxford, 2001; p 81. ISBN 0198503407.

Further reading

  • Chromium and Chromium Compounds. In Chromium, Nickel and Welding; IARC Monographs on the Evaluation of Carcinogenic Risks to Humans 49; International Agency for Research on Cancer: Lyon, France, 1990; pp 49–446. ISBN 92-832-1249-5.

External links

Error creating thumbnail: Unable to save thumbnail to destination
 Wikipedia-logo.png This page was originally imported from Wikipedia, specifically this version of the article "Caesium chromate". Please see the history page on Wikipedia for the original authors. This WikiChem article may have been modified since it was imported. It is licensed under the Creative Commons Attribution–Share Alike 3.0 Unported license.
Retrieved from "https://wiki.potsdam.edu/wikichem/index.php?title=Caesium_chromate&oldid=6938"