Sylvite: Difference between revisions

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{{Infobox_Salt
{{Infobox_Salt
|Footnote            =
|Footnote            =<ref>http://webmineral.com/data/Sylvite.shtml viewed on 29/07/2010</ref><ref>http://www.mindat.org/min-3850.html  viewed on 29/07/2010</ref>
|photo                = [[Image:"file name"|300px]]
|photo                = [[Image:HJS KCl-111703-03-10x.jpg|300px]]
|mineralogical_Name  =
|mineralogical_Name  =Sylvite, Hövelite
|chemical_Name        =
|chemical_Name        =Potassium chloride
|Trivial_Name        =
|Trivial_Name        =
|chemicalFormula     =
|chemical_Formula     =KCl
|Hydratforms          =
|Hydratforms          =
|Crystal_Class        =
|Crystal_System      = cubic
|Deliqueszenzhumidity =
|Crystal_Structure  =
|Solubility          =
|Deliqueszenzhumidity =85.0%
|Density              =
|Solubility          = 4.595 mol/kg
|MolVolume            =
|Density              =1.987 g/cm<sup>3</sup>
|Molweight            =
|MolVolume            =37.52 cm<sup>3</sup>/mol
|Transparency        =
|Molweight            =74.56 g/mol
|Cleavage            =
|Transparency        =transparent to translucent
|Cleavage            =perfect
|Crystal_Habit        =
|Crystal_Habit        =
|Twinning            =
|Twinning            =
|Refractive_Indices  =
|Refractive_Indices  = n=1.4903
|Birefringence        =
|Birefringence        =
|optical_Orientation  =
|optical_Orientation  =isotropic
|Pleochroism          =
|Pleochroism          =
|Dispersion          =
|Dispersion          =
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|chemBehavior        =
|chemBehavior        =
|Comments            =
|Comments            =
|Literature = <bib id="Steiger.etal:2014"/> <bib id="Robie.etal:1978"/> <bib id="Dana:1951"/>
}}
}}


back to [[Chloride]]
back to [[Chloride]]
[[Category:Sylvite]][[Category:Chloride]][[Category:Salt]][[Category:InProgress]]
 
==Solubility==
 
[[Image:S KCl e.jpg|800px|thumb|left|'''Figure 1''': Solubility of potassium chloride in water. The molality ''m'' [n(KCl)•kg(H<sub>2</sub>O)<sup>-1</sup>] is plotted versus the temperature. According to <bib id="Steiger.etal:2008c"/>]]
<br clear=all>
 
==Hygroscopicity==
 
<br clear=all>
[[Image:D KCl e.jpg|800px|thumb|left|'''Figure 2''': Deliquescence behaviour of potassium chloride. The water activity ''a<sub>w</sub>'' is plotted versus the temperature. According to <bib id="Steiger.etal:2008c"/>]]
<br clear=all>
 
 
{|border="2" cellspacing="0" cellpadding="4" width="52%" align="left" class="wikitable"
|+''Table 1: Deliquescence humidites of potassium chloride 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| 88.3%r.h.
|bgcolor = "#FFFFEO" align=center| 86.7%r.h.
|bgcolor = "#FFFFEO" align=center| 85.0%r.h.
|bgcolor = "#FFFFEO" align=center| 83.5%r.h.
|bgcolor = "#FFFFEO" align=center| 82.1%r.h.
|bgcolor = "#FFFFEO" align=center| 80.7%r.h.
|}
 
<br clear=all>
 
 
==Weblinks==
<references/>
 
== Literature==
 
<biblist/>
 
 
[[Category:Sylvite]][[Category:Chloride]][[Category:Salt]][[Category:InProgress]][[Category:List]]

Latest revision as of 13:50, 17 March 2015

Sylvite[1][2]
HJS KCl-111703-03-10x.jpg
Mineralogical name Sylvite, Hövelite
Chemical name Potassium chloride
Trivial name
Chemical formula KCl
Other forms
Crystal system cubic
Crystal structure
Deliquescence humidity 20°C 85.0%
Solubility (g/l) at 20°C 4.595 mol/kg
Density (g/cm³) 1.987 g/cm3
Molar volume 37.52 cm3/mol
Molar weight 74.56 g/mol
Transparency transparent to translucent
Cleavage perfect
Crystal habit
Twinning
Phase transition
Chemical behavior
Comments
Crystal Optics
Refractive Indices n=1.4903
Birefringence
Optical Orientation isotropic
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 [Dana:1951]Title: Dana's System of Mineralogy
Author: Dana J.D.
Link to Google Scholar


back to Chloride

Solubility[edit]

Figure 1: Solubility of potassium chloride in water. The molality m [n(KCl)•kg(H2O)-1] is plotted versus the temperature. According to [Steiger.etal:2008c]Title: An improved model incorporating Pitzer’s equations for calculation of thermodynamic properties of pore solutions implemented into an efficient program code
Author: Steiger, Michael; Kiekbusch, Jana; Nicolai, Andreas
Link to Google Scholar


Hygroscopicity[edit]


Figure 2: Deliquescence behaviour of potassium chloride. The water activity aw is plotted versus the temperature. According to [Steiger.etal:2008c]Title: An improved model incorporating Pitzer’s equations for calculation of thermodynamic properties of pore solutions implemented into an efficient program code
Author: Steiger, Michael; Kiekbusch, Jana; Nicolai, Andreas
Link to Google Scholar



Table 1: Deliquescence humidites of potassium chloride 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
88.3%r.h. 86.7%r.h. 85.0%r.h. 83.5%r.h. 82.1%r.h. 80.7%r.h.



Weblinks[edit]

  1. ↑ http://webmineral.com/data/Sylvite.shtml viewed on 29/07/2010
  2. ↑ http://www.mindat.org/min-3850.html viewed on 29/07/2010

Literature[edit]

[Dana:1951]Dana E.S. (eds.) Dana J.D. (1951): Dana's System of Mineralogy, 7, Wiley & SonsLink to Google Scholar
[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:2008c]Steiger, Michael; Kiekbusch, Jana; Nicolai, Andreas (2008): An improved model incorporating Pitzer’s equations for calculation of thermodynamic properties of pore solutions implemented into an efficient program code. In: Construction and Building Materials, 22 (8), 1841-1850, 10.1016/j.conbuildmat.2007.04.020Link 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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