Copper acetoarsenite - Revision history

MDerrick at 14:13, 25 October 2026

2026-10-25T14:13:22Z

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	[[File:emeraldgr C100x.jpg\|thumb\|Emerald green at 100x (visible light left; UV light right)]]		[[File:emeraldgr C100x.jpg\|thumb\|Emerald green at 100x (visible light left; UV light right)]]
	== Description ==		== Description ==
			A bright green powder best known as the pigment [[emerald green]] (originally called Paris green). Copper acetoarsenite is prepared by reacting [[sodium arsenite]] with [[copper sulfate]] and [[acetic acid]]. First manufactured in 1814, the brilliant green color became popular in Victorian England and Europe where it was used in wallpapers, clothing, artificial flowers, and oil paints. Unfortunately damp rooms caused fungi to react with the arsenic in wallpaper, releasing deadly arsine gas. Both the toxicity and poor color permanency lead to a decline in it use in households as well as artist materials. Currently, copper acetoarsenite is used as a wood preservative, rodenticide, larvicide, and as an antifouling agent in marine paints.
	A bright green powder best known as the pigment [[emerald green]] (originally called Paris green). Copper acetoarsenite is prepared by reacting [[sodium arsenite]] with [[copper sulfate]] and [[acetic acid]]. First manufactured in 1814, ~~it has a~~ brilliant green color ~~that~~ was used in oil ~~and watercolor~~ paints in the ~~19th century. It is no longer used in artist paints because of its~~ toxicity and poor color permanency. ~~Copper~~ acetoarsenite is ~~still~~ used as a wood preservative, larvicide and antifouling agent in marine paints.
	[[[SliderGallery rightalign\|f394sem.jpg~SEM\|f394edsbw.jpg~EDS]]]		[[[SliderGallery rightalign\|f394sem.jpg~SEM\|f394edsbw.jpg~EDS]]]
	== Synonyms and Related Terms ==		== Synonyms and Related Terms ==

	emerald green; Pigment Green 21; CI 77410; verde esmeralda (Esp.); vert cendre (Fr.); acetoarsenito di rame (It.); cupric acetoarsenite; copper acetate arsenite; king's green; Paris green; Schweinfurt green; mineral green; Mitis green; parrot green; Vienna green; new green; patent green; imperial green; Emperor green; Kaiser green; meadow green; mountain green; English green; Sattler green		emerald green; Pigment Green 21; CI 77410; verde esmeralda (Esp.); vert cendre (Fr.); acetoarsenito di rame (It.); cupric acetoarsenite; copper acetate arsenite; king's green; Paris green; Schweinfurt green; mineral green; Mitis green; parrot green; Vienna green; new green; patent green; imperial green; Emperor green; Kaiser green; meadow green; mountain green; English green; Sattler green

	== Risks ==		== Risks ==

	* Highly toxic by ingestion, inhalation and skin contact.		* Highly toxic by ingestion, inhalation and skin contact.
			* Arsenic compounds are known human carcinogens.
			* It does not break down easily, leading to long-term contamination of soil and water supplies

	==Physical and Chemical Properties==		==Physical and Chemical Properties==

	* Soluble in mineral acids, ethanol, potassium cyanide.		* Soluble in mineral acids, ethanol, potassium cyanide.
	* Insoluble in water.		* Insoluble in water.

MDerrick at 21:19, 24 October 2026

2026-10-24T21:19:12Z

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	==Physical and Chemical Properties==		==Physical and Chemical Properties==

	* Soluble in mineral acids, ethanol, potassium cyanide. Insoluble in water.		* Soluble in mineral acids, ethanol, potassium cyanide.
			* Insoluble in water.
	* Decomposes in alkalis.		* Decomposes in alkalis.
	* Darkens in the presence of sulfur or lead compounds.		* Darkens in the presence of sulfur or lead compounds.
	* Cu(C2H3O2)2·3Cu(AsO2)2 (mol. wt. = 1013.8 g/mol.)		* Cu(C2H3O2)2·3Cu(AsO2)2 (mol. wt. = 1013.8 g/mol.)
			* CAS = 12002-0308
	* Refractive Index = 1.71(alpha); 1.78(beta)		* Refractive Index = 1.71(alpha); 1.78(beta)

	==Resources and Citations==		==Resources and Citations==
			* MuseumPests.net: [https://museumpests.net/resources-2/pesticide-database/ Pesticide Database]
	* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993		* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993
	* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 2692		* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 2692
	* Thomas B. Brill, ''Light Its Interaction with Art and Antiquities'', Plenum Press, New York City, 1980		* Thomas B. Brill, ''Light Its Interaction with Art and Antiquities'', Plenum Press, New York City, 1980
	* Wikipedia= [https://en.wikipedia.org/wiki/Paris_green Paris green] accessed Feb 2026		* Wikipedia: [https://en.wikipedia.org/wiki/Paris_green Paris green] accessed Feb 2026


	[[Category:Materials database]]		[[Category:Materials database]]

MDerrick: /* Physical and Chemical Properties */

2026-02-22T18:37:31Z

Physical and Chemical Properties

← Older revision		Revision as of 13:37, 22 February 2026
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	* Darkens in the presence of sulfur or lead compounds.		* Darkens in the presence of sulfur or lead compounds.
	* Cu(C2H3O2)2·3Cu(AsO2)2 (mol. wt. = 1013.8 g/mol.)		* Cu(C2H3O2)2·3Cu(AsO2)2 (mol. wt. = 1013.8 g/mol.)
	* Refractive Index = 1.7		* Refractive Index = 1.71(alpha); 1.78(beta)

	==Resources and Citations==		==Resources and Citations==

MDerrick at 18:33, 22 February 2026

2026-02-22T18:33:39Z

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	== Description ==		== Description ==

	A bright green powder best known as the pigment [[emerald green]] (originally called Paris green). Copper acetoarsenite is prepared by reacting [[sodium arsenite]] with [[copper sulfate]] and [[acetic acid]]. First ~~manufacturered~~ in 1814, it has a brilliant green color that was used in oil and watercolor paints in the 19th century. It is no longer used in artist paints because of its toxicity and poor color permanency. Copper acetoarsenite is still used as a wood preservative, larvicide and antifouling agent in marine paints.		A bright green powder best known as the pigment [[emerald green]] (originally called Paris green). Copper acetoarsenite is prepared by reacting [[sodium arsenite]] with [[copper sulfate]] and [[acetic acid]]. First manufactured in 1814, it has a brilliant green color that was used in oil and watercolor paints in the 19th century. It is no longer used in artist paints because of its toxicity and poor color permanency. Copper acetoarsenite is still used as a wood preservative, larvicide and antifouling agent in marine paints.
	[[[SliderGallery rightalign\|f394sem.jpg~SEM\|f394edsbw.jpg~EDS]]]		[[[SliderGallery rightalign\|f394sem.jpg~SEM\|f394edsbw.jpg~EDS]]]
	== Synonyms and Related Terms ==		== Synonyms and Related Terms ==
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	* Decomposes in alkalis.		* Decomposes in alkalis.
	* Darkens in the presence of sulfur or lead compounds.		* Darkens in the presence of sulfur or lead compounds.
	* Cu(C2H3O2)~~2.3Cu~~(AsO2)2 (mol. wt. = 1013.8 g/mol.)		* Cu(C2H3O2)2·3Cu(AsO2)2 (mol. wt. = 1013.8 g/mol.)
	* Refractive Index = ~~1.71 -~~ 1.7		* Refractive Index = 1.7

	==Resources and Citations==		==Resources and Citations==

MDerrick at 18:30, 22 February 2026

2026-02-22T18:30:39Z

← Older revision		Revision as of 13:30, 22 February 2026
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	== Description ==		== Description ==

	A bright green powder known as the pigment [[emerald green]]. Copper acetoarsenite is prepared by reacting [[sodium arsenite]] with [[copper sulfate]] and [[acetic acid]]. First manufacturered in 1814, it has a brilliant green color that was used in oil and watercolor paints in the 19th century. It is no longer used in artist paints because of its toxicity and poor color permanency. Copper acetoarsenite is still used as a wood preservative, larvicide and antifouling agent in marine paints.		A bright green powder best known as the pigment [[emerald green]] (originally called Paris green). Copper acetoarsenite is prepared by reacting [[sodium arsenite]] with [[copper sulfate]] and [[acetic acid]]. First manufacturered in 1814, it has a brilliant green color that was used in oil and watercolor paints in the 19th century. It is no longer used in artist paints because of its toxicity and poor color permanency. Copper acetoarsenite is still used as a wood preservative, larvicide and antifouling agent in marine paints.
	[[[SliderGallery rightalign\|f394sem.jpg~SEM\|f394edsbw.jpg~EDS]]]		[[[SliderGallery rightalign\|f394sem.jpg~SEM\|f394edsbw.jpg~EDS]]]
	== Synonyms and Related Terms ==		== Synonyms and Related Terms ==

	emerald green; Pigment Green 21; CI 77410; verde esmeralda (Esp.); vert cendre (Fr.); acetoarsenito di rame (It.); cupric acetoarsenite; copper acetate arsenite; king's green; Paris green; Schweinfurt green; mineral ~~green; imperial~~ green; Mitis green; parrot green; Vienna green; new green; patent green; Emperor green; Kaiser green; meadow green; English green		emerald green; Pigment Green 21; CI 77410; verde esmeralda (Esp.); vert cendre (Fr.); acetoarsenito di rame (It.); cupric acetoarsenite; copper acetate arsenite; king's green; Paris green; Schweinfurt green; mineral green; Mitis green; parrot green; Vienna green; new green; patent green; imperial green; Emperor green; Kaiser green; meadow green; mountain green; English green; Sattler green

	== Risks ==		== Risks ==

MDerrick at 18:26, 22 February 2026

2026-02-22T18:26:29Z

← Older revision		Revision as of 13:26, 22 February 2026
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	== Description ==		== Description ==

	A bright green powder known as the pigment [[emerald green]]. Copper acetoarsenite is prepared by reacting [[sodium arsenite]] with [[copper sulfate]] and [[acetic acid]]. First manufacturered in 1814, it has a brilliant green color that was used in oil and watercolor paints in the 19th century. It is no longer used in artist paints because of its toxicity and poor color permanency. Copper acetoarsenite is ~~currently~~ used as a wood preservative, larvicide and antifouling agent in marine paints.		A bright green powder known as the pigment [[emerald green]]. Copper acetoarsenite is prepared by reacting [[sodium arsenite]] with [[copper sulfate]] and [[acetic acid]]. First manufacturered in 1814, it has a brilliant green color that was used in oil and watercolor paints in the 19th century. It is no longer used in artist paints because of its toxicity and poor color permanency. Copper acetoarsenite is still used as a wood preservative, larvicide and antifouling agent in marine paints.
	[[[SliderGallery rightalign\|f394sem.jpg~SEM\|f394edsbw.jpg~EDS]]]		[[[SliderGallery rightalign\|f394sem.jpg~SEM\|f394edsbw.jpg~EDS]]]
	== Synonyms and Related Terms ==		== Synonyms and Related Terms ==
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	* Decomposes in alkalis.		* Decomposes in alkalis.
	* Darkens in the presence of sulfur or lead compounds.		* Darkens in the presence of sulfur or lead compounds.
			* Cu(C2H3O2)2.3Cu(AsO2)2 (mol. wt. = 1013.8 g/mol.)
	~~{\| class="wikitable"~~		* Refractive Index = 1.71 - 1.7
	\|-
	~~! scope="row"\| Composition~~
	\| Cu(C2H3O2)2.3Cu(AsO2)2
	\|-
	~~! scope="row"\| Molecular Weight~~
	\| mol. wt. = 1013.8
	\|-
	~~! scope="row"\|~~ Refractive Index
	\| 1.71 - 1.7
	\|}

	==Resources and Citations==		==Resources and Citations==

	* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993		* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993

	* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 2692		* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 2692

	* Thomas B. Brill, ''Light Its Interaction with Art and Antiquities'', Plenum Press, New York City, 1980		* Thomas B. Brill, ''Light Its Interaction with Art and Antiquities'', Plenum Press, New York City, 1980
			* Wikipedia= [https://en.wikipedia.org/wiki/Paris_green Paris green] accessed Feb 2026


	[[Category:Materials database]]		[[Category:Materials database]]

MDerrick at 19:04, 4 July 2022

2022-07-04T19:04:08Z

← Older revision		Revision as of 14:04, 4 July 2022
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	[[File:emeraldgr C100x.jpg\|thumb\|Emerald green]]		[[File:emeraldgr C100x.jpg\|thumb\|Emerald green at 100x (visible light left; UV light right)]]
	== Description ==		== Description ==

	A bright green powder known as the pigment [[emerald green]]. Copper acetoarsenite is prepared by reacting [[sodium arsenite]] with [[copper sulfate]] and [[acetic acid]]. First manufacturered in 1814, it has a brilliant green color that was used in oil and watercolor paints in the 19th century. It is no longer used in artist paints because of its toxicity and poor color permanency. Copper acetoarsenite is currently used as a wood preservative, larvicide and antifouling agent in marine paints.		A bright green powder known as the pigment [[emerald green]]. Copper acetoarsenite is prepared by reacting [[sodium arsenite]] with [[copper sulfate]] and [[acetic acid]]. First manufacturered in 1814, it has a brilliant green color that was used in oil and watercolor paints in the 19th century. It is no longer used in artist paints because of its toxicity and poor color permanency. Copper acetoarsenite is currently used as a wood preservative, larvicide and antifouling agent in marine paints.
			[[[SliderGallery rightalign\|f394sem.jpg~SEM\|f394edsbw.jpg~EDS]]]
	== Synonyms and Related Terms ==		== Synonyms and Related Terms ==

	emerald green; Pigment Green 21; CI 77410; verde esmeralda (Esp.); vert cendre (Fr.); acetoarsenito di rame (It.); cupric acetoarsenite; copper acetate arsenite; king's green; Paris green; Schweinfurt green; mineral green; imperial green; Mitis green; parrot green; Vienna green; new green; patent green; Emperor green; Kaiser green; meadow green; English green		emerald green; Pigment Green 21; CI 77410; verde esmeralda (Esp.); vert cendre (Fr.); acetoarsenito di rame (It.); cupric acetoarsenite; copper acetate arsenite; king's green; Paris green; Schweinfurt green; mineral green; imperial green; Mitis green; parrot green; Vienna green; new green; patent green; Emperor green; Kaiser green; meadow green; English green

	~~[[[SliderGallery rightalign\|f394sem~~.~~jpg~SEM\|f394edsbw.jpg~EDS]]]~~		== Risks ==

			* Highly toxic by ingestion, inhalation and skin contact.

	== ~~Other~~ Properties ==		==Physical and Chemical Properties==

	Soluble in mineral acids, ethanol, potassium cyanide. Insoluble in water. Decomposes in alkalis. Darkens in the presence of sulfur or lead compounds.		* Soluble in mineral acids, ethanol, potassium cyanide. Insoluble in water.
			* Decomposes in alkalis.
			* Darkens in the presence of sulfur or lead compounds.

	{\| class="wikitable"		{\| class="wikitable"
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	\|}		\|}

	== ~~Hazards~~ and ~~Safety ==~~		==Resources and Citations==

	~~Highly toxic by ingestion, inhalation and skin contact.~~

	~~== Sources Checked for Data in Record~~ ==

	* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993		* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993

Jruggiero: Text replace - "== Authority ==" to "== Sources Checked for Data in Record =="

2016-04-29T20:19:36Z

Text replace - "== Authority ==" to "== Sources Checked for Data in Record =="

← Older revision		Revision as of 15:19, 29 April 2016
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	Highly toxic by ingestion, inhalation and skin contact.		Highly toxic by ingestion, inhalation and skin contact.

	== ~~Authority~~ ==		== Sources Checked for Data in Record ==

	* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993		* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993

KStacy: /* Description */

2013-08-02T14:52:50Z

Description

← Older revision		Revision as of 09:52, 2 August 2013
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	== Description ==		== Description ==

	A bright green powder known as the pigment [~~http://cameo.mfa.org/materials/fullrecord.asp?name=emerald%20green~~ emerald green]. Copper acetoarsenite is prepared by reacting [~~http://cameo.mfa.org/materials/fullrecord.asp?name=sodium%20arsenite~~ sodium arsenite] with [~~http://cameo.mfa.org/materials/fullrecord.asp?name=copper%20sulfate~~ copper sulfate] and [~~http://cameo.mfa.org/materials/fullrecord.asp?name=acetic%20acid~~ acetic acid]. First manufacturered in 1814, it has a brilliant green color that was used in oil and watercolor paints in the 19th century. It is no longer used in artist paints because of its toxicity and poor color permanency. Copper acetoarsenite is currently used as a wood preservative, larvicide and antifouling agent in marine paints.		A bright green powder known as the pigment [[emerald green]]. Copper acetoarsenite is prepared by reacting [[sodium arsenite]] with [[copper sulfate]] and [[acetic acid]]. First manufacturered in 1814, it has a brilliant green color that was used in oil and watercolor paints in the 19th century. It is no longer used in artist paints because of its toxicity and poor color permanency. Copper acetoarsenite is currently used as a wood preservative, larvicide and antifouling agent in marine paints.

	== Synonyms and Related Terms ==		== Synonyms and Related Terms ==

Unknown user at 12:43, 24 July 2013

2013-07-24T12:43:37Z

← Older revision		Revision as of 07:43, 24 July 2013
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	== Authority ==		== Authority ==

	* ~~Richard S. Lewis,~~ Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993		* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993

	* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 2692		* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 2692

	* ~~Thomas B. Brill,~~ Thomas B. Brill, ''Light Its Interaction with Art and Antiquities'', Plenum Press, New York City, 1980		* Thomas B. Brill, ''Light Its Interaction with Art and Antiquities'', Plenum Press, New York City, 1980



	[[Category:Materials database]]		[[Category:Materials database]]