Sodium dichromate: Difference between revisions

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==Uses==
==Uses==
===Primary===
* Oxidizer for organic reactions
===Other===
===Other===
* Key intermediate in [[chromium processing]]
* Key intermediate in [[chromium processing]]

Latest revision as of 18:01, 6 February 2025

 
Sodium dichromate
Chemical formula {{#Chem:Na2Cr2O7}}
OTP appearance bright orange crystals 
Molar Mass(g/mol) 261.97 
Density(g/cc) 2.52 
Melting Point(°C) 356.7 
Boiling Point(°C) 400(decomp) 
Solubility in water(g/L) 730
NFPA 704
0
3
0
ox

Uses

Primary

  • Oxidizer for organic reactions

Other

Natural occurrence

Hazards

  • potential (Chromium VI) carcinogen

Production

Synthesis

carbon dioxide

Bubble carbon dioxide through an aqueous solution of sodium chromate

{{#Chem:2 Na2CrO4 + 2 CO2 + H2O → Na2Cr2O7 + 2 NaHCO3}}

sulfuric acid

Combine sulfuric acid and sodium chromate

{{#Chem:Na2CrO4 + H2SO4 → Na2Cr2O7 + 2 NaHSO4}}

Testing

Purification

Storage

Disposal

See Also

References