Organic Salts: Difference between revisions

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In this overview the most frequently occurring salts with nitrate as the anion are listed. The various salt phases are discussed in detail on separate pages, their occurrence and their damage potential is explained and the damage szmptoms are illustrated in an documentation. <br>  
The most frequently occurring salts with anions of organic acids are listed and the most relevant information, especially for their identification by microscopy, is provided.
<!--The various salt phases are discussed in detail on separate pages, their occurrence and their damage potential is explained and the deterioration patterns are there illustrated. <br>
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{| width="100%" cellspacing="0" cellpadding="4" border="2" class="wikitable sortable"
<dpl>
|-
category = Organic_Salts&Salt
| <font size="2">'''Name'''</font>
include ={Infobox_Salt}:chemical_Formula:Solubility:Refractive_Indices:Birefringence:Comments
| <font size="2">'''Formula'''</font>
table=class="wikitable sortable",Salt,Formula,Solubility at 20°C,Light refraction,Birefringence,Notes
| <font size="2">'''Solubility'''</font><br><font size="2">[g/l] 20°C</font>
tablerow=bgcolor=lightyellow align=center|%%,bgcolor=lightyellow align=center|%%,bgcolor=lightyellow align=center|%%,bgcolor=lightyellow align=center|%%,bgcolor=lightyellow |%%
| <font size="2">'''Deliqueszenz-humidity'''</font>
| <font size="2">'''Light refraction'''/</font><br><font size="2">Birefringence</font>
| <font size="2">'''Notes'''</font>
|-
| [[Whewellite]]
| Ca(C<sub>2</sub>O<sub>4</sub>)•H<sub>2</sub>O
| poorly water soluble
| &nbsp;
| n<sub>x</sub> = 1,491<br>n<sub>y</sub> = 1,555<br><u>n<sub>z</sub> = 1,650</u><br>Δ = 0,159
|
|-
| [[Weddellite]]
| Ca(C<sub>2</sub>O<sub>4</sub>)•2H<sub>2</sub>O
| poorly water soluble
| &nbsp;
| n<sub>o</sub> = 1,523<br><u>n<sub>e</sub> = 1,544</u><br>Δ = 0,021
|
|-
| [[Formicaite]]
| Ca(HCOO)<sub>2</sub>
| 162 (0)
| &nbsp;
| n<sub>x</sub> = 1,510<br>n<sub>y</sub> = 1,514<br><u>n<sub>z</sub> = 1,578</u><br>Δ = 0,068
| &nbsp;
|-
| [[Dashkovaite]]
| Mg(HCOO)<sub>2</sub>•2H<sub>2</sub>O
| 140(0)
| &nbsp;
| n<sub>x</sub> = 1,468<br>n<sub>y</sub> = 1,476<br><u>n<sub>z</sub> = 1,518</u><br>Δ = 0,050
| &nbsp;
|-
| [[Calciumacetate]]
| Ca (C<sub>2</sub>H<sub>3</sub>O<sub>2</sub>)<sub>2</sub>
| 374 (0)
| &nbsp;
| &nbsp;
| found of on calcareous museum objects
|-
| [[Calclacite]]
| Ca[Cl<sub>2</sub>/CH<sub>3</sub>COO]•10H<sub>2</sub>O
| &nbsp;
| &nbsp;
| n<sub>x</sub> = 1,468<br>n<sub>y</sub> = 1,484<br><u>n<sub>z</sub> = 1,515</u><br>Δ = 0,047
| found of on calcareous museum objects
|-
| [[Thecotrichite]]
| Ca<sub>3</sub>(CH<sub>3</sub>COO)<sub>3</sub>Cl(NO<sub>3</sub>)<sub>2</sub>• 7H<sub>2</sub>O
| &nbsp;
| &nbsp; ca. 85%RH <ref>http://iaq.dk/iap/iap1998/1998_04.htm&amp;amp;lt;br&amp;amp;gt; </ref>
| &nbsp;
| gfound of on calcareous museum objects
|}


</dpl>
== Weblinks  ==
== Weblinks  ==


<references />  
<references />  


[[Category:Salt]] [[Category:Hschwarz]] [[Category:R-MSteiger]] [[Category:inProgress]]
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Latest revision as of 12:50, 29 December 2013

Author: Hans-Jürgen Schwarz
back to SaltWiki:Portal

The most frequently occurring salts with anions of organic acids are listed and the most relevant information, especially for their identification by microscopy, is provided.

Salt Formula Solubility at 20°C Light refraction Birefringence Notes
Dashkovaite Mg(HCOO)2•2H2O 140 g/l(0°C) nx = 1.465
ny = 1.486
nz = 1.516 		Δ = 0.050
Formicaite Ca(HCOO)2 162 g/l (0°C) no = 1.553
ne = 1.573 		Δ = 0.020
Thecotrichite Ca3(CH3COO)3Cl(NO3)2•7H2O nx = 1.491 ± 0.001
nz = 1.494 ± 0.003 		found on calcareous museum objects and archaeological ceramic objects
Weddellite Ca(C2O4)•2H2O no = 1.523
ne = 1.544 		Δ = 0.021 insoluble in water
Whewellite Ca(C2O4)•H2O nx = 1.491
ny = 1.555
nz = 1.650 		Δ = 0.159 insoluble in water
Calclacite Ca[Cl2/CH3COO]•10H2O CaCl2•Ca(C2H3O2)2•10H2O nx = 1.468
ny = 1.484
nz = 1.515 		Δ = 0.047 found on calcareous museum objects and archaeological ceramic objects
Calcium acetate Ca(C2H3O2)2 374 g/l (0°C) found on calcareous museum objects and archaeological ceramic objects
Glushinskite Mg(C2O4)•2(H2O) nx =1.365
ny = 1.53
nz = 1.595 		Δ = 0,2300 Formed by reaction between Mg-rich minerals and oxalic acid secreted by incrusting lichen.


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