Nitronatrite

Nitronatrite
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	880 g/l
Density (g/cm³)	2.24-2.29 g/cm3
Molar volume	37.6 cm3/mol
Molar weight	85 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
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Authtor: Hans-Jürgen schwarz
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Solubility properties

Figure1: Solubility ofNaNO₃ in Wasser (Diagram: Michael Steiger)

Hygroscopicity

Figure2: Deliqueszenz humidity of NaNO₃ (Diagram: Michael Steiger)

Table 1: Deliquescence himdities of sodium nitrate at different round temperatures [Steiger etal: 2014]Title: Weathering and Deterioration
Author: Steiger, Michael; Charola A. Elena; Sterflinger, Katja

0°C	10°C	20°C	30°C	40°C	50°C
80,1%r.F.	77,7%r.F.	75,3%r.F.	72,8%r.F.	70,4%r.F.	68,0%r.F.

Under the polarising microscope

• crystallized on a glass slide
• 

  elemination

• 

  Nitronatrit, crystallized from aqueous solution on a glass slide

Weblinks

Literature

[Steiger etal: 2014]

Steiger, Michael; Charola A. Elena; Sterflinger, Katja (2014): Weathering and Deterioration. In:: Stone in Architecture, Siegesmund S. and Snethlage R., 10.1007/978-3-642-45155-3_4.

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