Difference between pages "Birch bark" and "Titanium potassium oxalate"

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[[File:69.944-E7425CR-d1.jpg|thumb|Saddle<br>MFA#69.944]]
 
 
== Description ==
 
== Description ==
  
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Thin sheets peeled from the inner bark of the [[birch|birch]] tree.  Birch bark was used as a textile and writing paper in India and the Far East from at least the 2nd century. For preparation, the strips were pulled from the tree, dried, then softened with oil (Batton 2000). The strips were laminated using a natural [[gum|gum]] then flattened between wooden covers.
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Colorless crystals.  Titanium potassium oxalate is used as a mordant in dyeing [[cotton|cotton]] and [[leather|leather]].  It is also used as a sensitizer of aluminum for photography (Lewis 1993).
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[[File:1973.161a-b-SC58753.jpg|thumb|Covered basket<br>MFA# 1973.161]]
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== Synonyms and Related Terms ==
 
== Synonyms and Related Terms ==
  
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birch bark paper; birchbark paper; birch-bark paper; bhoja-patra
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T.P.O.
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==Risks==
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* Toxic
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* Neoprene gloves and goggles are recommended
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* Loba Chem: [https://www.lobachemie.com/lab-chemical-msds/MSDS-POTASSIUM-TITANIUM-OXALATE-CASNO-14402-67-05461-EN.aspx SDS]
  
 
== Physical and Chemical Properties ==
 
== Physical and Chemical Properties ==
  
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* Soluble in organic solvents.
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* Soluble in water.
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* Insoluble in cold water.
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* Composition = K2TiC2O5 - 2H2O
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* Thickness = 0.2-0.5 mm.
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* Loba Chem: [https://www.lobachemie.com/lab-chemical-msds/MSDS-POTASSIUM-TITANIUM-OXALATE-CASNO-14402-67-05461-EN.aspx SDS]
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== Additional Images ==
 
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<gallery>
 
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File:63.289_EMaPQBB_overall.jpg|Birch bark example
 
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File:63.289_Birch_det.jpg|Birch bark
 
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</gallery>
 
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==Resources and Citations==
 
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* S.S.Batton "Seperation (sic) Anxiety: The Conservation of a 5th Century Buddhist Gandharan Manuscript" ''WAAC Newsletter'', 22(1):15-17, 2000.  O.P.Agrawal, "Investigations for Preservation of Birch-Bark Manuscripts" in Preprints of ICOM Committee for Conservation , Ottawa, 1981.
 
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* Matt Roberts, Don Etherington, Matt Roberts, Don Etherington, ''Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology'', U.S. Government Printing Office, Washington DC, 1982
 
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[[Category:Materials database]]
 
[[Category:Materials database]]

Latest revision as of 15:20, 10 June 2022

Description

Colorless crystals. Titanium potassium oxalate is used as a mordant in dyeing Cotton and Leather. It is also used as a sensitizer of aluminum for photography (Lewis 1993).

Synonyms and Related Terms

T.P.O.

Risks

  • Toxic
  • Neoprene gloves and goggles are recommended
  • Loba Chem: SDS

Physical and Chemical Properties

  • Soluble in water.
  • Composition = K2TiC2O5 - 2H2O
  • Loba Chem: SDS

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