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Authtor: [[user:Hschwarz|Hans-Jürgen schwarz]]
<br>
back to [[Nitrate]]
{{Infobox_Salt
{{Infobox_Salt
|Footnote            =<ref>http://webmineral.com/data/Nitratine.shtml seen on 29.07.2010</ref><ref>http://www.mindat.org/min-2916.html seen on 29.07.2010</ref>
|Footnote            =<ref>http://webmineral.com/data/Nitratine.shtml seen on 29.07.2010</ref><ref>http://www.mindat.org/min-2916.html seen on 29.07.2010</ref>
|photo                = [[File:NaNO3 II (1).JPG|300px]]
|photo                = [[File:NaNO3 II (1).JPG|300px]]
|mineralogical_Name  = Nitronatrite
|mineralogical_Name  = Sodium Nitrate
|chemical_Name        = Natronatrite
|chemical_Name        = Natriumnitrat
|Trivial_Name        = Nitratine, Soda Niter, Cubic Niter
|Trivial_Name        = Nitratine, Nitratite, Soda Niter, Cubic Niter
|chemical_Formula      =NaNO<sub>3</sub>
|chemical_Formula      =NaNO<sub>3</sub>
|Hydratforms          =
|Hydratforms          =
|Crystal_System      =
|Crystal_System      =trigonal
|Crystal_Structure    =trigonal
|Crystal_Structure    =
|Deliqueszenzhumidity =75,2
|Deliqueszenzhumidity =75.3%
|Solubility          =
|Solubility          = 10.347 mol/kg
|Density              =2,24-2,29 g/cm<sup>3</sup>
|Density              =2.26 g/cm<sup>3</sup>
|MolVolume            =37,6 cm<sup>3</sup>/mol  
|MolVolume            =37.6 cm<sup>3</sup>/mol  
|Molweight            =85 g/mol  
|Molweight            =84.99 g/mol  
|Transparency        = transparent
|Transparency        = transparent
|Cleavage            = perfect
|Cleavage            = perfect
|Crystal_Habit        =
|Crystal_Habit        =
|Twinning            =
|Twinning            =
|Refractive_Indices  = n<sub>o</sub> = 1,587<br>n<sub>e</sub> = 1,336  
|Refractive_Indices  = n<sub>o</sub> = 1.587<br>n<sub>e</sub> = 1.336  
|Birefringence        = Δ = 0,251  
|Birefringence        = Δ = 0.251  
|optical_Orientation  =
|optical_Orientation  =
|Pleochroism          =
|Pleochroism          =
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|chemBehavior        =
|chemBehavior        =
|Comments            =
|Comments            =
|Literature          =<bib id="Steiger.etal:2014"/> <bib id="Robie.etal:1978"/>
}}
}}


back to [[Nitrate]]


== Under the polarising microscope  ==
== Solubility properties  ==
<gallery perrow="3" heights="200px" widths="200px" caption="crystallised on a glass slide">
 
[[file:S NaNO3.jpg|thumb|800px|left|Figure 1: Solubility of NaNO<sub>3</sub> in water. The molality ''m'' [n(NaNO<sub>3</sub>)•kg(H<sub>2</sub>O)<sup>-1</sup>] is plotted versus the temperature.]]
<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>
 
== Hygroscopicity  ==
 
[[file:D NaNO3 e.jpg|thumb|800px|left|Figure 2: Deliquescence behaviour of sodium nitrate. The water activity ''a<sub>w</sub>'' is plotted versus the temperature.]]
 
<br clear=all>
{|border="2" cellspacing="0" cellpadding="4" width="52%" align="left" class="wikitable"
|+''Table 1: Deliquescence humdities of  sodium nitrate at different round temperatures <bib id="Steiger.etal:2014"/>''.                   
|-
|bgcolor = "#F0F0F0" align=center| 0°C
|bgcolor = "#F0F0F0" align=center| 10°C
|bgcolor = "#F0F0F0" align=center| 20°C
|bgcolor = "#F0F0F0" align=center| 30°C
|bgcolor = "#F0F0F0" align=center| 40°C
|bgcolor = "#F0F0F0" align=center| 50°C
|-
|bgcolor = "#FFFFEO" align=center| 80.1%r.h.
|bgcolor = "#FFFFEO" align=center| 77.7%r.h.
|bgcolor = "#FFFFEO" align=center| 75.3%r.h.
|bgcolor = "#FFFFEO" align=center| 72.8%r.h.
|bgcolor = "#FFFFEO" align=center| 70.4%r.h.
|bgcolor = "#FFFFEO" align=center| 68.0%r.h.
|}
<br clear=all>
 
== Under the polarizing microscope  ==
<gallery perrow="3" heights="200px" widths="200px" caption="crystallized on a glass slide">


Image:NaNO3_I_(2).JPG | elemination
Image:NaNO3_I_(2).JPG | Nitratine, under crossed polars.
Image:NaNO3 pol 02.JPG| Nitronatrit, crystallised from aqueous solution on a glass slide  
Image:NaNO3 pol 02.JPG| Nitratine, crystallized from aqueous solution on a glass slide  


</gallery>
</gallery>
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<references />  
<references />  


[[Category:Nitronatrite]][[Category:Nitrate]][[Category:Salt]][[Category:InProgress]]
=Literature=
<biblist/>
 
[[Category:Nitronatrite]][[Category:Nitrate]][[Category:Salt]][[Category:InReview]][[Category:List]]

Latest revision as of 11:55, 3 May 2023

Authtor: Hans-Jürgen schwarz
back to Nitrate


Nitronatrite[1][2]
NaNO3 II (1).JPG
Mineralogical name Sodium Nitrate
Chemical name Natriumnitrat
Trivial name Nitratine, Nitratite, Soda Niter, Cubic Niter
Chemical formula NaNO3
Other forms
Crystal system trigonal
Crystal structure
Deliquescence humidity 20°C 75.3%
Solubility (g/l) at 20°C 10.347 mol/kg
Density (g/cm³) 2.26 g/cm3
Molar volume 37.6 cm3/mol
Molar weight 84.99 g/mol
Transparency transparent
Cleavage perfect
Crystal habit
Twinning
Phase transition
Chemical behavior
Comments
Crystal Optics
Refractive Indices no = 1.587
ne = 1.336
Birefringence Δ = 0.251
Optical Orientation
Pleochroism
Dispersion
Used Literature
[Steiger.etal:2014]Title: Weathering and Deterioration
Author: Steiger, Michael; Charola A. Elena; Sterflinger, Katja
Link to Google Scholar [Robie.etal:1978]Title: Thermodynamic properties of minerals and related substances at 298.15 K and 1 bar pressure and higher temperatures
Author: Robie R.A., Hemingway B.S.; Fisher J.A.
Link to Google Scholar



Solubility properties[edit]

Figure 1: Solubility of NaNO3 in water. The molality m [n(NaNO3)•kg(H2O)-1] is plotted versus the temperature.



























Hygroscopicity[edit]

Figure 2: Deliquescence behaviour of sodium nitrate. The water activity aw is plotted versus the temperature.


Table 1: Deliquescence humdities of sodium nitrate at different round temperatures [Steiger.etal:2014]Title: Weathering and Deterioration
Author: Steiger, Michael; Charola A. Elena; Sterflinger, Katja
Link to Google Scholar.
0°C 10°C 20°C 30°C 40°C 50°C
80.1%r.h. 77.7%r.h. 75.3%r.h. 72.8%r.h. 70.4%r.h. 68.0%r.h.


Under the polarizing microscope[edit]

  • crystallized on a glass slide
  • Nitratine, under crossed polars.

    Nitratine, under crossed polars.

  • Nitratine, crystallized from aqueous solution on a glass slide

    Nitratine, crystallized from aqueous solution on a glass slide

Weblinks
[edit]

  1. ↑ http://webmineral.com/data/Nitratine.shtml seen on 29.07.2010
  2. ↑ http://www.mindat.org/min-2916.html seen on 29.07.2010

Literature[edit]

[Robie.etal:1978]Robie R.A., Hemingway B.S.; Fisher J.A. (1978): Thermodynamic properties of minerals and related substances at 298.15 K and 1 bar pressure and higher temperatures. In: U.S. Geol. Surv. Bull, 1452 ()Link to Google Scholar
[Steiger.etal:2014]Steiger, Michael; Charola A. Elena; Sterflinger, Katja (2014): Weathering and Deterioration. In: Siegesmund S.; Snethlage R. (eds.): Stone in Architecture, Springer Verlag Berlin Heidelberg, 223-316, 10.1007/978-3-642-45155-3_4.Link to Google Scholar

A phase is a physically distinctive form of matter and is characterized by having relatively uniform chemical and physical properties.

concentration given as amount of substance (mol) of the dissolved substance per kilogram solvent; unit: mol•kg-1.

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