Solid phase
Official name
Caesium bromide
CAS number
7787-69-1
Type
Family
ionic solid
Class
normal salt
Compound type
bromide
Chemical composition
Formula
Cs+⋅Br−
Chemical formula
CsBr
Elemental formula
(Cs+) (Br-)
Isotope mixture type
terrestrial abundance
4.0
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
Cs+ Caesium cation element 1 0.5 1 constituent cation main
Br− Bromide anion element 1 0.5 1 constituent anion main
Chemical bonds
  Bond Number
Cs+⋅Br− 1
Class
normal salts (07)
Type
simple normal salts (07.01)
Phase type
crystalline
Crystal system
isometric (cubic)
Crystal class
hexoctahedral
Crystal class symbol
m-3m (Oh)
Crystal spacegroup
Pm-3m
Molar mass
212.809 g/mol
Density
4.43 g/cm3
State NTP
solid
Phase transitions
Phase transition type Other phases Temperature - Pressure
solid-liquid liquid CsBr 909 K (636°C)
Refringence type
isotropic
Refraction index nα
1.6974
Pure color
colorless
Color
colorless, white
Diaphaneity
transparent to translucent
Luster
vitreous
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