Sylvite

Sylvite
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	344 g/l
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=1.490
Birefringence
Optical Orientation	isotropic
Pleochroism
Dispersion
Used Literature
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Hygroscopicity

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

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.

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.