Caesium sulfate | SSHADE

Solid phase

Official name: Caesium sulfate

Name and identifiers

Secondary names: Cesium sulfate
CAS number: 10294-54-9

Family: ionic solid
Class: normal salt
Compound type: sulfate

Chemical composition

Formula: $Cs_2^+.(SO_4)^{2-}$
Chemical formula: Cs2SO4
Elemental formula: (Cs+)2 S O2 (O-)2
Isotope mixture type: terrestrial abundance

6.0

	Formula	Name	Family	Number min-max	Mole fraction	Isotope mole fraction	State	Relevance
	$Cs^+$	Caesium cation	element	2	0.6666666666666666	1	constituent cation	main
	$(SO_4)^{2-}$	Sulfate anion	chemical function	1	0.3333333333333333	1	anionic radical	main

Chemical functions and bonds

Chemical functions

	Function	Number
	$(SO_4)^{2-}$	1

Chemical bonds

	Bond	Number
	$Cs^+ \cdot O^-$	2
	$\dddot - \dddot - \dddot - S \dddot - O^{-1/2}$	4

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

Crystallography

Phase type: crystalline
Crystal system: orthorhombic
Crystal class: dipyramidal
Crystal class symbol: mmm (D2h)
Crystal spacegroup: Pnma

Physical properties

Molar mass: 361.87 $g/mol$
Density: 4.243 $g/cm^3$

Thermodynamical properties

State NTP

solid

Phase transitions

Phase transition type	Other phases	Temperature - Pressure
solid-liquid	liquid Cs2SO4	1010°C (1280 K)

Optical properties

Refringence type: biaxial
Pure color: colorless
Color: colorless, white
Diaphaneity: transparent to translucent

Links and Publications

Links