Copper(II) stearate
Copper(II) stearate
Names
Other names
copper(2+) dioctadecanoate, cupric stearate, copper distearate[1]
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.010.493 Edit this at Wikidata
EC Number
  • 211-540-3
UNII
  • InChI=1S/2C18H36O2.Cu/c2*1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h2*2-17H2,1H3,(H,19,20);/q;;+2/p-2
    Key: PEVZEFCZINKUCG-UHFFFAOYSA-L
  • [Cu+2].[O-]C(=O)CCCCCCCCCCCCCCCCC.[O-]C(=O)CCCCCCCCCCCCCCCCC
Properties
Cu(C17H35COO)2
Molar mass 630.48
Appearance blue-green amorphous substance
Density 1.10 g/cm3
Boiling point 250 °C (482 °F; 523 K)
insoluble
Hazards
GHS labelling:
GHS07: Exclamation mark
Warning
H315, H319, H335
P261, P280, P305, P338, P351
Related compounds
Related compounds
 Mercury(II) stearate, Cobalt(II) stearate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Copper(II) stearate is a metal-organic compound, a salt of copper and stearic acid with the formula Cu(C17H35COO)2.[2][3] The compound is classified as a metallic soap, i.e. a metal derivative of a fatty acid.

Synthesis

Exchange reaction of sodium stearate and copper sulfate:[4][5]

Physical properties

Copper(II) stearate forms a blue-green amorphous substance[6] similar to plasticine both in appearance and touch.

Insoluble in water, ethanol, or ether; soluble in pyridine.[7]

Chemical properties

The compound is stable and non-reactive under normal conditions.[8]

When trying to ignite, copper stearate first melts and then begins to burn with a green (at the base) flame, then it quickly turns black due to the formation of cupric oxide:

Uses

The compound is used in the production of antifouling paint and varnish materials.

Also used as a component in casting bronze sculptures.[9]

Also applies as a catalyst for the decomposition of hydroperoxides.[10]

References

  1. ^ "CAS 660-60-6 Copper(ii)stearate - Alfa Chemistry". alfa-chemistry.com. Retrieved 13 February 2023.
  2. ^ "Copper(II) stearate". Oakwood Chemical. Retrieved 13 February 2023.
  3. ^ "Copper(II) Stearate". American Elements. Retrieved 13 February 2023.
  4. ^ Richardson, H. Wayne (16 January 1997). Handbook of Copper Compounds and Applications. CRC Press. p. 85. ISBN 978-0-8247-8998-5. Retrieved 13 February 2023.
  5. ^ "Cupric stearate | 660-60-6". ChemicalBook. Retrieved 13 February 2023.
  6. ^ "MatWeb - The Online Materials Information Resource". matweb.com. Retrieved 13 February 2023.
  7. ^ Haynes, William M. (9 June 2015). CRC Handbook of Chemistry and Physics, 96th Edition. CRC Press. p. 4-62. ISBN 978-1-4822-6097-7. Retrieved 13 February 2023.
  8. ^ "SAFETY DATA SHEET" (PDF). chemservice.com. Retrieved 14 February 2023.
  9. ^ Scott, David A. (2002). Copper and Bronze in Art: Corrosion, Colorants, Conservation. Getty Publications. p. 293. ISBN 978-0-89236-638-5. Retrieved 13 February 2023.
  10. ^ Ugo, R. (6 December 2012). Aspects of Homogeneous Catalysis: A Series of Advances. Springer Science & Business Media. p. 85. ISBN 978-94-010-1199-0. Retrieved 13 February 2023.
Categories