Sodium dichromate: Difference between revisions
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(Created page with "{{Compound|chemf=Na2Cr2O7|group=salts |mm=261.97|density=2.52|mp=356.7|bp=400(decomp)|sol_aq=730 |stp_p=crystals|stp_q=bright orange |nfpa_h=3|nfpa_o=ox }} ==Uses== {{Justify}} ===Other=== * Intermediate in chromium refining * oxidizing reagent ==Natural occurrence== ==Hazards== * potential (Chromium VI) carcinogen ==Production== ===Synthesis=== ====carbon dioxide==== Bubble carbon dioxide through an aqueous solution of sodium chromate : {{#Chem:2 Na2CrO4 +...") |
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{{Justify}} | {{Justify}} | ||
===Other=== | ===Other=== | ||
* | * Key intermediate in [[chromium processing]] | ||
* | * Oxidizing Reagent | ||
==Natural occurrence== | ==Natural occurrence== | ||
Revision as of 17:55, 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
Justification Questioned
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