Difference between revisions of "Scheele's green"

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== Description ==
 
== Description ==
  
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A highly poisonous green pigment composed of [http://cameo.mfa.org/materials/fullrecord.asp?name=copper arsenite copper arsenite]. Scheele's green was discovered in Sweden in 1775 by Carl W. Scheele, a German chemist, but he did not publish the recipe until 1778. It is a bright, warm yellowish-green with good opacity. Scheele's green was never widely used as a paint pigment because it was toxic and discolored in the presence of acid or sulfur fumes. Currently, copper arsenite is used as a rodenticide, [http://cameo.mfa.org/materials/fullrecord.asp?name=insecticide insecticide], fungicide, and wood preservative.
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A highly poisonous green pigment composed of [[copper arsenite]]. Scheele's green was discovered in Sweden in 1775 by Carl W. Scheele, a German chemist, but he did not publish the recipe until 1778. It is a bright, warm yellowish-green with good opacity. Scheele's green was never widely used as a paint pigment because it was toxic and discolored in the presence of acid or sulfur fumes. Currently, copper arsenite is used as a rodenticide, [[insecticide]], fungicide, and wood preservative.
  
 
== Synonyms and Related Terms ==
 
== Synonyms and Related Terms ==
  
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copper arsenite; cupric arsenite; Pigment Green 22; CI 77412; mineral green; ash green; vert de Scheele (Fr.); Scheelesgrn (Deut.); verde di Scheele (It.)
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copper arsenite; cupric arsenite; Pigment Green 22; CI 77412; mineral green; ash green; vert de Scheele (Fr.); Scheelesgrün (Deut.); verde di Scheele (It.); Swedish green; Schloss Green
  
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[[[SliderGallery rightalign|ScheelesUCL.jpg~Raman]]]
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[[[SliderGallery rightalign|Scheele's green (Forbes 9.06.3) resize.jpg~Raman (MFA)|ScheelesUCL.jpg~Raman (UCL)]]]
  
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== Other Properties ==
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== Risks ==
  
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Soluble in mineral acids.  Insoluble in water.
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* Extremely toxic by ingestion, inhalation and skin absorption.
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* Human carcinogen.   
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* May produce toxic arsenic fumes when decomposed by fungi.
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* NIH: [https://pubchem.ncbi.nlm.nih.gov/compound/Cupric-arsenite Info and SDS]
  
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  Decomposes in alkalis. Darkens in the presence of sulfur or lead compounds.
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== Physical and Chemical Properties ==
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* Soluble in mineral acids.  Insoluble in water.  
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* Decomposes in alkalis.  
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* Darkens in the presence of sulfur or lead compounds.
  
 
{| class="wikitable"
 
{| class="wikitable"
 
|-
 
|-
 
! scope="row"| Composition
 
! scope="row"| Composition
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| Cu(AsO2)2
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| CuHAsO<sub>3</sub>
 
|-
 
|-
 
! scope="row"| Refractive Index
 
! scope="row"| Refractive Index
Line 24: Line 31:
 
|}
 
|}
  
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== Hazards and Safety ==
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==Resources and Citations==
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Extremely toxic by ingestion, inhalation and skin absorption.
 
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Human carcinogen. 
 
  
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May produce toxic arsenic fumes when decomposed by fungi.
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* I.Fiedler, M Bayard, "Emerald Green and Scheele's Green", ''Artists Pigments'', Volume 3, E. West FitzHugh (ed.), Oxford University Press: Oxford, 1997.
  
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== Additional Information ==
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* R. J. Gettens, G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966
  
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I.Fiedler, M Bayard, "Emerald Green and Scheele's Green", ''Artists Pigments'', Volume 3, E. West FitzHugh (ed.), Oxford University Press: Oxford, 1997.
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* Ralph Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row Publishers, New York, 1969 (also 1945 printing)
  
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== Authority ==
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* R.D. Harley, ''Artists' Pigments c. 1600-1835'', Butterworth Scientific, London, 1982
  
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* R. J. Gettens, G.L. Stout, R. J. Gettens, G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966
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* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
  
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* Ralph Mayer, Ralph Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row Publishers, New York, 1969 (also 1945 printing)
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* R. Newman, E. Farrell, 'House Paint Pigments', ''Paint in America '', R. Moss ed., Preservation Press, New York City, 1994
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* R.D. Harley, R.D. Harley, ''Artists' Pigments c. 1600-1835'', Butterworth Scientific, London, 1982
 
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* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
 
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* R. Newman, E. Farrell, R. Newman, E. Farrell, 'House Paint Pigments', ''Paint in America '', R. Moss ed., Preservation Press, New York City, 1994
 
  
 
* ''The Dictionary of Art'', Grove's Dictionaries Inc., New York, 1996  Comment: 'Pigments'
 
* ''The Dictionary of Art'', Grove's Dictionaries Inc., New York, 1996  Comment: 'Pigments'
  
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* G.S.Brady, G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971  Comment: p. 610
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* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971  Comment: p. 610
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* Michael McCann, Michael McCann, ''Artist Beware'', Watson-Guptill Publications, New York City, 1979
 
  
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* Thomas B. Brill, Thomas B. Brill, ''Light Its Interaction with Art and Antiquities'', Plenum Press, New York City, 1980
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* Michael McCann, ''Artist Beware'', Watson-Guptill Publications, New York City, 1979
  
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* Book and Paper Group, Book and Paper Group, ''Paper Conservation Catalog'', AIC, 1984, 1989
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* Thomas B. Brill, ''Light Its Interaction with Art and Antiquities'', Plenum Press, New York City, 1980
  
 +
* Book and Paper Group, ''Paper Conservation Catalog'', AIC, 1984, 1989
  
 +
* Wikipedia [https://en.wikipedia.org/wiki/Scheele%27s_Green Scheele's Green]
  
 
[[Category:Materials database]]
 
[[Category:Materials database]]

Latest revision as of 09:33, 8 December 2022

Description

A highly poisonous green pigment composed of Copper arsenite. Scheele's green was discovered in Sweden in 1775 by Carl W. Scheele, a German chemist, but he did not publish the recipe until 1778. It is a bright, warm yellowish-green with good opacity. Scheele's green was never widely used as a paint pigment because it was toxic and discolored in the presence of acid or sulfur fumes. Currently, copper arsenite is used as a rodenticide, Insecticide, fungicide, and wood preservative.

Synonyms and Related Terms

copper arsenite; cupric arsenite; Pigment Green 22; CI 77412; mineral green; ash green; vert de Scheele (Fr.); Scheelesgrün (Deut.); verde di Scheele (It.); Swedish green; Schloss Green

Raman (MFA)

Scheele's green (Forbes 9.06.3) resize.jpg

Raman (UCL)

ScheelesUCL.jpg


Risks

  • Extremely toxic by ingestion, inhalation and skin absorption.
  • Human carcinogen.
  • May produce toxic arsenic fumes when decomposed by fungi.
  • NIH: Info and SDS

Physical and Chemical Properties

  • Soluble in mineral acids. Insoluble in water.
  • Decomposes in alkalis.
  • Darkens in the presence of sulfur or lead compounds.
Composition CuHAsO3
Refractive Index 1.55 - 1.75

Resources and Citations

  • I.Fiedler, M Bayard, "Emerald Green and Scheele's Green", Artists Pigments, Volume 3, E. West FitzHugh (ed.), Oxford University Press: Oxford, 1997.
  • R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966
  • Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
  • R.D. Harley, Artists' Pigments c. 1600-1835, Butterworth Scientific, London, 1982
  • R. Newman, E. Farrell, 'House Paint Pigments', Paint in America , R. Moss ed., Preservation Press, New York City, 1994
  • The Dictionary of Art, Grove's Dictionaries Inc., New York, 1996 Comment: 'Pigments'
  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 610
  • Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
  • Thomas B. Brill, Light Its Interaction with Art and Antiquities, Plenum Press, New York City, 1980
  • Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989

Retrieved from "https://cameo.mfa.org/index.php?title=Scheele%27s_green&oldid=94796"