Cobalt tungstate

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Structural formula
Cobaltion Orthotungframation
General
Surname Cobalt tungstate
other names
  • Cobal tungsten oxide
  • Cobalt (II) tungstate
Molecular formula CoO 4 W
Brief description

greenish-blue to blue-black odorless solid

External identifiers / databases
CAS number 10101-58-3
EC number 233-254-8
ECHA InfoCard 100.030.218
PubChem 11738337
Wikidata Q16631665
properties
Molar mass 306.78 g mol −1
Physical state

firmly

density

8.42 g cm −3

Melting point

1280 ° C

solubility

almost insoluble in water, soluble in hot concentrated acids

safety instructions
GHS labeling of hazardous substances
07 - Warning

Caution

H and P phrases H: 302-317
P: 261-280-301 + 312-363-321-501
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Cobalt tungstate is an inorganic chemical compound of cobalt from the group of tungstates with the formula CoWO 4 .

Extraction and presentation

Cobalt tungstate can be obtained by reacting sodium tungstate with cobalt (II) sulfate . It was found in burning coal mines as the mineral krasnoselskite .

properties

Cobalt tungstate is a greenish-blue to blue-black crystalline, odorless solid that is insoluble in water. It has a monoclinic crystal structure with the space group P 2 / c (space group no. 13) . Template: room group / 13

use

Cobalt tungstate is used as a pigment , drying agent for glazes, inks and paints, and as a catalyst .

Individual evidence

  1. ↑ a b c d e f g h i data sheet cobalt tungstate from AlfaAesar, accessed on June 10, 2016 ( PDF )(JavaScript required) .
  2. ↑ a b c R. Blachnik: Pocket book for chemists and physicists Volume 3: Elements, inorganic compounds and materials, minerals . Springer-Verlag, 2013, ISBN 978-3-642-58842-6 , pp. 392 ( limited preview in Google Book search).
  3. ↑ Allen Alper: High Temperature Oxides . Elsevier, 2012, ISBN 978-0-323-15834-3 , pp. 114 ( limited preview in Google Book search).
  4. ↑ Jiwei Deng, Liao Chang, Ping Wang, Endi Zhang, Jianmin Ma, Taihong Wang: Preparation and magnetic properties of CoWO 4 nanocrystals. In: Crystal Research and Technology. 47, 2012, p. 1004, doi : 10.1002 / crat.201200130 .
  5. ↑ mindat.org: Krasnoselskite: Krasnoselskite mineral information and data. , accessed June 10, 2016
  6. ↑ Patent DE60117198 : Process for the production of olefins . Filed June 8, 2001 , published July 27, 2006 , applicant: Saudi Basic Industries Corp. (Sabic), inventors: Ahmed E. Abasaeed, Mazhar Abdulwahed, Saeed M. Al-Zahrani, Nimir O. Elbashir. ‌