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Rubidium sulfate

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Rubidium sulfate Basic information

Product Name:
Rubidium sulfate
Synonyms:
  • RUBIDIUM SULFATE, 99% (METALS BASIS)
  • RUBIDIUM SULFATE REAGENT
  • rubidium sulfate, puratronic
  • Rubidium sulfate, Puratronic(R), 99.975% (metals basis)
  • rubidium sulphate
  • RUBIDIUM SULFATE, 99.99+%
  • RUBIDIUM SULFATE, 99.8%
  • RUBIDIUM SULFATE (99.8%-RB)
CAS:
7488-54-2
MF:
O4Rb2S
MW:
267
EINECS:
231-301-7
Product Categories:
  • metal sulfate
  • Chemical Synthesis
  • Inorganic Salts
  • Materials Science
  • Metal and Ceramic Science
  • Rubidium Salts
  • Inorganic Salts
  • Rubidium Salts
  • RubidiumMetal and Ceramic Science
  • Salts
  • Synthetic Reagents
  • Hematology and Histology
  • Hematology StainsSynthetic Reagents
  • Synthetic Reagents
  • Rubidium
Mol File:
7488-54-2.mol
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Rubidium sulfate Chemical Properties

Melting point:
1050 °C
Boiling point:
1700 °C
Density 
3.613 g/mL at 25 °C (lit.)
refractive index 
1.513
form 
crystal
Specific Gravity
3.613
color 
white
Water Solubility 
soluble
CAS DataBase Reference
7488-54-2(CAS DataBase Reference)
EPA Substance Registry System
Sulfuric acid, dirubidium salt (7488-54-2)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-37/39
WGK Germany 
2
RTECS 
WS8350000
TSCA 
Yes
HS Code 
28332980

MSDS

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Rubidium sulfate Usage And Synthesis

Preparation

Rubidium sulfate can be prepared by neutralization of a solution of rubidium hydroxide or carbonate with sulfuric acid:
2RbOH + H2SO4 → Rb2SO4 + 2H2O
Rb2CO3 + H2SO4 →Rb2SO4 + H2O + CO2
Alternatively, Rb sulfate may be obtained by treating a hot solution of rubidium aluminum sulfate (rubidium alum) with ammonia solution.
Aluminum hydroxide precipitates. The product mixture is filtered. The filtrate on evaporation crystallizes rubidium sulfate.

Description

Rubidium sulfate is a White orthogonal crystal. The molecular formula of the compound is Rb2SO4 and the molecular weight of rubidium sulfate is 266.999 g/mol. Rubidium Sulfate is a moderately water and acid soluble. Rubidium source for uses compatible with sulfates. Sulfate compounds are salts or esters of sulfuric acid formed by replacing one or both of the hydrogens with a metal.

Chemical Properties

colorless crystal(s) [MER06] [HAW93]

Physical properties

White orthogonal crystal; density 3.6 g/cm3; melts at 1,050°C; very soluble in water, 36 g/100g at 0°C and 82 g/100g at 100°C.

Uses

Rubidium sulfate can be used for making other rubidium salts as the raw materials, for water treatment, or for hematology stain. It is also usedd on a ceramic bead and used as thermoionic detector. Rubidium sulfate is also used as a cathartic. 

Purification Methods

Crystallise the sulfate from water (1.2mL/g) between 100o and 0o.

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