Sodium chloride | SSHADE

Solid phase

Official name: Sodium chloride

Name and identifiers

Secondary names: Common salt; Halite; Rock salt; Saline; Sodium chloric; Table salt; NaCl
CAS number: 7647-14-5

Family: ionic solid
Class: normal salt
Compound type: chloride
Comments: equivalent to mineral Halite

Chemical composition

Formula: $Na^+ \cdot Cl^-$
Chemical formula: NaCl
Elemental formula: (Na+) (Cl-)
Isotope mixture type: terrestrial abundance

4.0

	Formula	Name	Family	Number min-max	Mole fraction	Isotope mole fraction	State	Relevance
	$Na^+$	Sodium cation	element	1	0.5	1	constituent cation	main
	$Cl^-$	Chloride anion	element	1	0.5	1	constituent anion	main

Chemical functions and bonds

Chemical bonds

	Bond	Number
	$Na^+ \cdot Cl^-$	6

Class: normal salts (07)
Type: simple normal salts (07.01)

Associated phases

Equivalent mineral: Halite

Crystallography

Phase type: crystalline
Crystal system: isometric (cubic)
Crystal class: hexoctahedral
Crystal class symbol: m-3m (Oh)
Crystal spacegroup: Fm-3m

Physical properties

Molar mass: 58.443 $g/mol$
Density: 2.165 (calc.: 2.22) $g/cm^3$

Thermodynamical properties

State NTP

solid

Phase transitions

Phase transition type	Other phases	Temperature - Pressure
solid-liquid	liquid NaCl	801°C (1074 K) @ 1 bar

Optical properties

Refringence type: isotropic
Refraction index $n_{\alpha}$: 1.544 @ 589 nm
Pure color: colorless
Color: colorless, white
Diaphaneity: transparent to translucent
Luster: vitreous

Links and Publications

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