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
| Chemical formula | 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
- Key intermediate in chromium processing
- Oxidizing Reagent
Natural occurrence
Hazards
- potential (Chromium VI) carcinogen
Production
Synthesis
carbon dioxide
Bubble carbon dioxide through an aqueous solution of sodium chromate
- 2 Na2CrO4 + 2 CO2 + H2O → Na2Cr2O7 + 2 NaHCO3
sulfuric acid
Combine sulfuric acid and sodium chromate
- Na2CrO4 + H2SO4 → Na2Cr2O7 + 2 NaHSO4