Difference between revisions of "Henna"

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== Description ==
 
== Description ==
  
A reddish-orange dyestuff that comes from the leaves of small evergreen trees, ''Lawsonia inermis'' or ''Lawsonia alba'', native to the Middle East, northern Africa and Asia. Henna was used by the ancient Egyptians and Asians for dyeing [http://cameo.mfa.org/materials/fullrecord.asp?name=hair hair], nails, skin, [http://cameo.mfa.org/materials/fullrecord.asp?name=leather leather], [http://cameo.mfa.org/materials/fullrecord.asp?name=wool wool], and [http://cameo.mfa.org/materials/fullrecord.asp?name=silk silk]. Henna-dyed cloth was sometimes used for mummy wrappings. The principle colorant in henna is lawsone and it also contains [http://cameo.mfa.org/materials/fullrecord.asp?name=juglone juglone], [http://cameo.mfa.org/materials/fullrecord.asp?name=luteolin luteolin], and several tannins. Lawsone is a red [http://cameo.mfa.org/materials/fullrecord.asp?name=substantive dye substantive dye] that is very effective on the protein [http://cameo.mfa.org/materials/fullrecord.asp?name=keratin keratin]. Henna has also been used as a [http://cameo.mfa.org/materials/fullrecord.asp?name=fungicide fungicide].
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A reddish-orange dyestuff that comes from the leaves of small evergreen trees, ''Lawsonia inermis'' or ''Lawsonia alba'', native to the Middle East, northern Africa and Asia. Henna was used by the ancient Egyptians and Asians for dyeing [[hair]], nails, skin, [[leather]], [[wool]], and [[silk]]. Henna-dyed cloth was sometimes used for mummy wrappings. The principle colorant in henna is lawsone and it also contains [[juglone]], [[luteolin]], and several tannins. Lawsone is a red [[substantive dye]] that is very effective on the protein [[keratin]]. Henna has also been used as a [[fungicide]].
  
 
== Synonyms and Related Terms ==
 
== Synonyms and Related Terms ==
  
2-hydroxy-1,4-naphthalenedione; Natural Orange 6; CI 75480; henna (Esp.); henn (Fr.); hena (Port.); English privet; flowers of paradise; lawsone; 2-hydroxy-p-naphthoquinone; 2-hydroxynaphthoquinone; hennis; hana; alkanna; gopherwood; mignonette; mehandi; mendi
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2-hydroxy-1,4-naphthalenedione; Natural Orange 6; CI 75480; henna (Esp.); henné (Fr.); hena (Port.); English privet; flowers of paradise; lawsone; 2-hydroxy-p-naphthoquinone; 2-hydroxynaphthoquinone; hennis; hana; alkanna; gopherwood; mignonette; mehandi; mendi
  
 
[[[SliderGallery rightalign|henna.jpg~Chemical structure]]]
 
[[[SliderGallery rightalign|henna.jpg~Chemical structure]]]
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== Risks ==
  
== Other Properties ==
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* Contact, inhalation or ingestion may cause irritation. 
 +
* Fisher Scientific: [https://fscimage.fishersci.com/msds/97034.htm MSDS]
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== Physical and Chemical Properties ==
  
 
Lawsone is soluble in water, ether.
 
Lawsone is soluble in water, ether.
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== Hazards and Safety ==
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== Resources and Citations ==
 
 
Contact, inhalation or ingestion may cause irritation. 
 
 
 
Fisher Scientific: [https://fscimage.fishersci.com/msds/97034.htm MSDS]
 
 
 
== Additional Information ==
 
  
J.Hofenk-de Graaf, ''Natural Dyestuffs: Origin, Chemical Constitution, Identification'', Central Research Laboratory for Objects of Art and Science, Amsterdam, September 1969.
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* J.Hofenk-de Graaf, ''Natural Dyestuffs: Origin, Chemical Constitution, Identification'', Central Research Laboratory for Objects of Art and Science, Amsterdam, September 1969.
 
 
== Authority ==
 
  
 
* ''Van Nostrand's Scientific Encyclopedia'', Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
 
* ''Van Nostrand's Scientific Encyclopedia'', Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
  
* Random House, Random House, ''Webster's Encyclopedic Unabridged Dictionary of the English Language'', Grammercy Book, New York, 1997
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* Random House, ''Webster's Encyclopedic Unabridged Dictionary of the English Language'', Grammercy Book, New York, 1997
  
 
* ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998
 
* ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998
  
* G.S.Brady, G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971  Comment: p. 283
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* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971  Comment: p. 283
 
 
* Richard S. Lewis, Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993
 
  
* ''Encyclopedia Britannica'', http://www.britannica.com  Comment: "Myrtales" Encyclopdia Britannica [Accessed May 6, 2002]. Lawsonia inermis
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* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993
  
* Palmy Weigle, Palmy Weigle, ''Ancient Dyes for Modern Weavers'', Watson-Guptill Publications, New York, 1974
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* ''Encyclopedia Britannica'', http://www.britannica.com  Comment: "Myrtales" [Accessed May 6, 2002]. ''Lawsonia inermis''
  
* John and Margaret Cannon, John and Margaret Cannon, ''Dye Plants and Dyeing'', Herbert Press, London, 1994
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* Palmy Weigle, ''Ancient Dyes for Modern Weavers'', Watson-Guptill Publications, New York, 1974
  
* A.Lucas, J.R.Harris, A.Lucas, J.R.Harris, ''Ancient Egyptian Materials and Industries'', Edward Arnold Publishers Ltd., London, 4th edition, 1962
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* John and Margaret Cannon, ''Dye Plants and Dyeing'', Herbert Press, London, 1994
  
* F. Crace-Calvert, F. Crace-Calvert, ''Dyeing and Calico Printing'', Palmer & Howe, London, 1876
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* A.Lucas, J.R.Harris, ''Ancient Egyptian Materials and Industries'', Edward Arnold Publishers Ltd., London, 4th edition, 1962
  
* Judith Hofenk-de Graaff, Judith Hofenk-de Graaff, ''Natural Dyestuffs: Origin, Chemical Constitution, Identification'', Central Research Laboratory for Objects of Art and Science, Amsterdam, 1969
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* F. Crace-Calvert, ''Dyeing and Calico Printing'', Palmer & Howe, London, 1876
  
* J. Thornton, J. Thornton, 'The Use of Dyes and Colored Varnishes in Wood Polychromy', ''Painted Wood: History and Conservation'', The Getty Conservation Insitute, Los Angeles, 1998
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* J. Thornton, 'The Use of Dyes and Colored Varnishes in Wood Polychromy', ''Painted Wood: History and Conservation'', The Getty Conservation Insitute, Los Angeles, 1998
  
* Helmut Schweppe, Helmut Schweppe, Schweppe color collection index and information book
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* Helmut Schweppe, Schweppe color collection index and information book
  
 
* Colour Index International online at www.colour-index.org
 
* Colour Index International online at www.colour-index.org

Latest revision as of 07:37, 9 August 2022

Henna powder

Description

A reddish-orange dyestuff that comes from the leaves of small evergreen trees, Lawsonia inermis or Lawsonia alba, native to the Middle East, northern Africa and Asia. Henna was used by the ancient Egyptians and Asians for dyeing Hair, nails, skin, Leather, Wool, and Silk. Henna-dyed cloth was sometimes used for mummy wrappings. The principle colorant in henna is lawsone and it also contains Juglone, Luteolin, and several tannins. Lawsone is a red Substantive dye that is very effective on the protein Keratin. Henna has also been used as a Fungicide.

Synonyms and Related Terms

2-hydroxy-1,4-naphthalenedione; Natural Orange 6; CI 75480; henna (Esp.); henné (Fr.); hena (Port.); English privet; flowers of paradise; lawsone; 2-hydroxy-p-naphthoquinone; 2-hydroxynaphthoquinone; hennis; hana; alkanna; gopherwood; mignonette; mehandi; mendi

Chemical structure

Henna.jpg

Risks

  • Contact, inhalation or ingestion may cause irritation.
  • Fisher Scientific: MSDS

Physical and Chemical Properties

Lawsone is soluble in water, ether.

Composition C10H6O3
CAS 83-72-7
Melting Point 192 (dec)
Molecular Weight mol. wt. = 174.0402

Resources and Citations

  • J.Hofenk-de Graaf, Natural Dyestuffs: Origin, Chemical Constitution, Identification, Central Research Laboratory for Objects of Art and Science, Amsterdam, September 1969.
  • Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 283
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Palmy Weigle, Ancient Dyes for Modern Weavers, Watson-Guptill Publications, New York, 1974
  • John and Margaret Cannon, Dye Plants and Dyeing, Herbert Press, London, 1994
  • A.Lucas, J.R.Harris, Ancient Egyptian Materials and Industries, Edward Arnold Publishers Ltd., London, 4th edition, 1962
  • F. Crace-Calvert, Dyeing and Calico Printing, Palmer & Howe, London, 1876
  • J. Thornton, 'The Use of Dyes and Colored Varnishes in Wood Polychromy', Painted Wood: History and Conservation, The Getty Conservation Insitute, Los Angeles, 1998
  • Helmut Schweppe, Schweppe color collection index and information book
  • Colour Index International online at www.colour-index.org

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