Organic Salts

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Author: Hans-Jürgen Schwarz
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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.

Name Formula Solubility
[g/l] 20°C
Deliqueszenz-humidity Light refraction/
Birefringence
Notes
Whewellite Ca(C2O4)•H2O poorly water soluble   nx = 1,491
ny = 1,555
nz = 1,650
Δ = 0,159
Weddellite Ca(C2O4)•2H2O poorly water soluble   no = 1,523
ne = 1,544
Δ = 0,021
Formicaite Ca(HCOO)2 162 (0)   nx = 1,510
ny = 1,514
nz = 1,578
Δ = 0,068
 
Dashkovaite Mg(HCOO)2•2H2O 140(0)   nx = 1,468
ny = 1,476
nz = 1,518
Δ = 0,050
 
Calciumacetate Ca (C2H3O2)2 374 (0)     found of on calcareous museum objects
Calclacite Ca[Cl2/CH3COO]•10H2O     nx = 1,468
ny = 1,484
nz = 1,515
Δ = 0,047
found of on calcareous museum objects
Thecotrichite Ca3(CH3COO)3Cl(NO3)2• 7H2O     ca. 85%RH [1]   gfound of on calcareous museum objects

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